Table Of Content

SUBJECT INDEX Accuracy Baffles Accuracy of Estimated Shonen bg Fy ay Development of Low-Discharge Baffle-Sluice transpiration, argreaves, iov./ Modules,P . K. Mishra,P . Larsaendn T . Sa- Dec. 89, p1000-p1o or Po IR May/June 90, p444-453. Africa Problems and Potential of Irrigated Agtestine onyi c Baiance Model Using Neutron Probe in Sub-Saharan Africa, Mahmood , IR ichard H. Cuenca, IR Nov. 88, p644- Mar./Apr. 91, p155-172. Agricultural economics Bentonite Problems and Potential of be ited culture Setting Time Effects on Bentonite Water-Weil in Sub-Saharan Africa, om Sy me Annulus Seals, Fred L. Ogden and James F. Mar./Apr. 91, p155-172. Ruff, IR July/Aug. 91, p534-545. SECTAR for Economically Guied. nee Calibration a Yield a." Peralta, ~ .T ae and R. Shulstad, IR AS /Feb. 91, Accuracy of eines ged On ee, p = transpiration, argreaves, liov./ Pies8 9, 080 100 Agricultural engineering — A“naal e of Tank Irrigation: I. ef ri G. Mayya and Rama Prasad, I pea Drai: Water—How Should it be noite 89, p384-405. oe te - Wil- Johnston and William J. Miller, IR Agricultural wastes SanF eb. 89, p3-8. icultural Drainage Water—How Should it be Canal design egulated in California? Stephen K. Hall, Wil- liam R. Johnston and William J. Miller, IR Optimal yr of Parabolic Canals, G. V. Lo- Jan./Feb. 89, p3-8. ganathan, IR Sept./Oct. 91, p716-735. Air temperature Canals Accuracy of Estimated Lg ee Crop Evapo- Centralized Scheduling a ghf or Canal Opera- transpiration, Geo: . Hargreaves, IR Nov./ tion, G. P. Merki . R. Walker, IR Dec. 89, p1000-1 oon May/June 91, p377- 93. Design of ee Canals: Integrated Ap- Analysis proach, H. Imam, Abdallah S. Bazaraa Calculation of Distribution and Efficiency for od Ashraf S . Zaghlool, IR Nov/Dec. 91, Nonuniform Irrigation, A. W. Warrick, E. Hart p852-869. and M. Yitayew, oR July/Aug. 89, p674-686. Design of Ri -~Channei Expansive oe! — in Layered Soils, H. C. Sharma, Transitions, Prabhata Swamee and Bharat an, P. N. Ka r and Sewa Ram, C. Basak,I R Nov./Dec. 91, p827-838. ik Mar lAr 91, p184-2 Optimal —% Ffo f Parabolic Canals, G. V. Lo- Analytical techniques ganathan, IR Sept./Oct. 91, p716-735. Simple Methods for Predicting Flow to Drains, Projectwide Water-Order Scheduling byC omput- G. Fipps and R. W. Skaggs, IR Nov./Dec. 91, er, Brian J. Bomanad Cnharl es HigginsI, R p88 1-896. May/June 91, p394-407. Aquifers Channels, waterways Drainage of Clay een ag ge Aquifer. I: Design Procedure for Flow Over Side Weirs, Al Hydrol 4 Assessmen E. Geismer and I. 090" and Roger H. Smith, IR Jan./Feb. 91, C. Tod, IR Mar./Apr. 9i, p255-270. Drainage of Clay Overlying Artesian Aquifer. II: Normal-Depth Calculations in Complex Channel Technical Analysis, I. C. Tod and M. E. Gris- Sections, Edward D. Shi and Vicente L. mer, IR Mar./Apr. 91, p271-284. Lopes, IR Mar./Apr. 91, p220-232. Vertical Leakage in Egypt’s Nile Valley: Estima- Optimal es |of Tube Wells in Relation to tion and Implications, James W. Warner, Tim- Channel Losses and Lining, Bimal Chandra othy K. Gates, Fatma A. R. Attia and Wadie F. Mal, IR Sept./Oct. 91, p791-799. Mankarious, IR July/Aug. 91, p515-533. Characteristics Automation Local Scour Downstream of Box-Culvert Outlets, Centralized Scheduling pow ghfo r Canal Opera- H. Abida and R. D. Townsend, IR May/June tion, G. P. Merkl R. Walker, IR 91, p425-440. May/June 91, p377-393. Clays Backwater mere of Clay Overlying Artesian Aquifer. I: Backwater Curves in Circular Channels, Willi H. ‘fmm t MEE . Grismer and I. Hager, IR Mar./Apr. 91, p173-183. e‘ Tod Mar./Apr. 9i, p255-270. CLAYS 1991 ANNUAL INDEX Drainage of Clay Overlying Artesian Aquifer. II: Normal-Depth Calculations in Complex Channel Technical Analysis, I. C. Tod and M. E. Gris- Sections, Edward D. Shirley and Vicente L. mer, IR Mar./Apr. 91, p271-284. Lopes, IR Mar./Apr. 91, p220-232. Setting Time Effects on Bentonite Water-Well Computerized design Annulus Seals, Fred L. Ogden and James F. Ruff, IR July/Aug. 91, p534-545. Interactive Computer-Aided Design of Inverted Siphons, Pravi Shrestha and Johannes J. DeV- Climatic changes ries, IR Mar./Apr. 91, p233-254. Accuracy of ~~ Eriemaee pny Concentration time transpiration. argreaves, ov Fractal Concept Used in Time-of-Concentration Dec. 89, p1000-1007. Estimates, Gert Aron, James E. and Climatic data ThomasA . Smith, IR Sept /Oct. 91, p635-641. Evapotranspiration Estimation for Data-Short Conditional probability Environment, SunF . Shih and Ke S. Cheng, IR a ee of Precipitation Droughts by Use of Jan./Feb. 91, p107- 122. Krigei rr rh od, TiaoJ . Chang, IR Nov./Dec. Sensitivity of rege ‘we Evaporation Es- 91, p935-94 timates, K. C. Gan cMahon and I. C. O'Neill, IR May/June 91, p324-335. Cost effectiveness a Two-Stage Pipe Expansions for Centrif- Climatology moe, alter L. Trimmer and John A. FAO-24 ae ~_ transpiration Factors, Fazio IIR Jan./Feb. 91, p91-106. Richard G. William O. Pruitt, IR Sept./Oct. 91, 0758-773. Cost minimization Design “ Irrigation Canals: Integrated Ap- Simulation Models of Ppa of Dry vy ‘ya — — H. Imam,A bdallah S. Bazaraa Days, J. W. Delleur, 5 and and S. Zaghlool, IR Nov./Dec. 91, Kavvas, IR May/June 89, 3344-33 p852- on Clogging Costs Dripper-Clogging Factors in Wastewater Irriga- Problems and Potential of Irrigated tion, Avner Adin and Mollie Sacks, IR Nov./ in Sub-Saharan Africa, Mahmood Dec. 91, p813-826. Mar./Apr. 91, p155-172. Closed conduits Crop moisture index Methods of Measuri Pumpage Through “Data i Balance Model Using Neutron Probe Closed-Conduit Irrigation Systems, L. C. Kjel- ichard H. Cuenca, IR Nov. 88, p644- strom, IR Sept./Oct. 91, p748-757. Coastal plains gibi Drainage-Subirrigation Effect on Water Quality Simulation of Supplemental Irrigation from On- ~b e JF latwoods, D. L. Thomas,A .S hir- Farm Ponds, J. G. Arnold and C. O. Stockle, R. R. Lowrance and “ c. IR May/June 91, p408-424. SmiMthE, TR dea/ Reb. 91, p123-137. Systems Analysis of Tank Irrigation: I. C Staggerin; ~~ Mayya and Rama Prasad, I Colorado Sdeslbune 89, p384-405. Multicriterion Strategic Planning for Improved —— a J II: Agenoatin, Walter E. Crop yield i Timoth Gates, DarrellG . Fontane — of Deficit eens aandt ee — Jose D. Salas, IR Nov./Dec. 91, p914-934. way boen Whvat Yields, M jakamura, IR Mar./Apr. 89, pl ary ie Computer applications SECT‘ AR for Econemically Optimal, Sustained Simple Methods for Predicting Flow to Drains, Ground-Water Yield Planning, R. C. Peralta, Dop an= 4 and R. W. Skaggs, IR Nov./Dec. 91, , Reet and R. Shulstad, IR Jan./Feb. 91, Pp Computer programs Subsurface Microirrigation with Effluent, Gideon Oron, Joel DeMalach, Zafrir Hoffman and a of Least-Squares Land Leveling, N. Rodica Cibotaru, IR Jan./Feb. 91, p25-36. Gebre-Selassie and L. S. Willardson, IR ection 91, p962-966. Crops eee Concept in Channel FAO-24 yy Epvaa peemerintion Factors, letwork Model, Tahir Husain, Hasin U. Khan Richard William O. Pruitt, IR and Suhail M. Khan, IR Jan./Feb. 91, p48-63. et 91*,p 138-773. Pues Water-Order yorein gb yC ompe Subsurface Microi 7 with Effluent, Gideon Brian J. Boman and iggins,I mn, Joel M: Zafrir Hoffman and Shgilune 91, p394-407. Rodica Cibotaru, IR ‘an./ Feb. 91, p25-36. Computer software Culverts Interactive Computer-Aided Design of Inverted Local Scour Downstream of Box-Culvert Outlets, Siphons, Pravi Shresthaan d JohannesJ . DeV- H. Abida and R. D. Townsend, IR May/June ries, IR Mar. Apr. 91, p233-254. 91, p425-440. SUBJECT INDEX Curricula Simple Methods for Predicting Flow to Drains, DSS: Dam Site Selector Expert System for Edu- G—. Ww. coy IR Nov./Dec. 91, cation, Bernard A. Engel and David B. Beasley, IR Sept./Oct. 91, p774-782. Raisec riteria Dam site selection Interactive Computer-Aided Design of Inverted DSS: Dam Site ye Expert System for Edu- Siphons, Pravi Shrestha and Johannes J. DeV- cation, Bernar 7 ehan d David B. Beasley, ries, IR Mar./Apr. 91, p233-254. IR Sept./Oct. OLA n Discharge Damage Alternative Linear Weir , Prabhata K. —— of Soil Moisture Prediction Model for Swamee, Santosh K.P athak, Agarwal Land Managers, J. R. Davis, S. M. = Anwar S. Ansari, IR May/June 91, p311- Cudd P. Laut, J. Goods and P. A. Whigham, IR July/Aug. 91, p476-489. Correction to _—- o. gpa yath Lo w Dams DSS: Dam Site Selector Expert System for Edu- Taher ERSe pt/Oct. 91,p 800808 cation, Bernard A. Engel and David B. Beasley, Design Procedure for Flow Over Side Weirs, Ali IR Sept./Oct. 91, p774-782. by and Roger H. Smith, IR Jan./Feb. 91, Darcy’s law Pp Nonlinear Steady State into Drains, Discharge coefficients Salihu Mustafa and N. A. indadi, IR May/ Alternative Linear Weir Design, Prabhata K. June 89, p358-376. Swamee, Santosh K. Pathak, Agarwal Data extraction = Anwar S. Ansari, IR May/June 91, p311- Evapotranspiration Estimation for Data-Short Environment, Sun F. Shih and Ke S. Cheng, IR Design Procedure for Flow Over SideW Jan./Feb. 91, p107-122. 090" and Roger H. Smith, IR Jan/Feb. aL Decision making Discharge Coefficient of Lateral Diversion ~~ Irrigation Uniformity Relationships for Irrigation Trapezoidal Channel, Hin-Fait Cheong,I R System Management, Albert J. Clemmens, IR July/Aug. 91, p461-475. Sept./Oct. 91, p682-699. Multicriterion Strategic Planning for Improved Discharge measurement Irrigation Delivery. I: Approach, Timothy K. Correction to —_— ~~ Calibrations at Low Gates, Walter E. jeyder, Darrell G. Fontane Disc! and Bahram and Jose D. Salas, IR Nov./Dec. 91, p897-913. Taheri, Scot Oat.3 1,y e08 804, Multicriterion Strategic Planning for Improved Irrigation Delivery. II: Application, Walter E. Distribution patterns a, TTiSmo thy K. Gates, Darrell G. Fontane —— of Wind-Distorted Sprinkier Patterns, Salas,I RN ov./Dec. 91, p914-934. ner, Dov Nir and R. D. von Bernuth, Delivery IRb aerdige. 91, p285-306. Field Study on Irrigation Delivery Performance, Ditches Joel D. Palmer, Albert J. Clemmens and Allen Numerical Mi of Two-Dimensional Tran- R. Dedrick, IR July/Aug. 91, p567-577. sient Flow to Di Saleem Ahmad, Depth ort oahn d B. S. Mathur, 'R Nov./Dec. 91, Critical Depth, Velocity Profile, and Channel R. J. Heggen, IR May/June 91, p442- Drag coefficient Normal-Depth Calculations in Complex Channel Simulation of Wind-Distorted ee Patterns, SLeocpteiso,n s,I R EMdarw.a/rAdp r.D .9 1,S hipr2l2ey0 -23a2n.d Vicente L. IIdRo MSaerg/iAneprr,. 9D1o,v pN2i8r5 -3a0n6d. R.D . von Bernuth, Design Drainage Design of Hydraulic Jump Chambers, Scott F. icultural x 4 Water—How Should it be Korom, Simsek Sarikelle and Andrew L. egulated in California? Stephen K. Hall, Wil- Simon, "IR Mar. /Apr. 90, p143-153. liam R. Johnston and William J. Miller, IR Design of Irrigation Canals: Integrated Ap- Jan./Feb. 89, p3-8. proach, Emad H. Imam, Abdallah S. Bazaraa Drainage of Clay ng eg Aquifer. i: and Ashraf S. Zaghlool, IR Nov./Dec. 91, Hyd ic Assessment E. Grismer and I. p852-869. C. Tod, IR Mar./Apr. 9i, p255-270. Design of Rectangular n-Channel Expansive Drainage of Clay — Artesian Aquifer. II: Transitions, Prabhata K. Swamee and Bharat Technical Analys vee Tod and M. E. Gris- C. Basak, IR Nov./Dec. 91, p827-838. mer, IR Mar/Apr. OL, p271-284. Kriging of Hydraulic Conductivity for Subsurface Drainage-Subi tion Effect on Water Quality wy e ign, J. Gallichand, S. O. Prasher, in Georgia —. . —. _— roughton and D. Marcotte, IR Sept./ mohammadi, R. R. Lowrance an or 91, p667-681. Smith, IR Jan./Feb. 91, p123-137. DRAINAGE 1991 ANNUAL INDEX On the Correspondence Between Brooks-Co: Systems Analysis of Tank Irrigation: Cc and Van Genuchten Models, R. J. Lenhard, J. Staggering, a6. Mayya and Rama Ls aR C. Parker and S. Mishra, IR July/Aug. 89, May/June 89, p384-405. p744-751. Energy losses Overseas Perspectives for Managin es Drainage in California, Emery M. Roe,I Drop Manholes in Supercritical Pipelines, May/June 91, p350-360. TF C. Christodoulou, IR Jan/Feb. 9i, p : Simple Methods for Predicting Flow to Drains, G. Fipps and R. W. Skaggs, IR Nov./Dec. 91, Engineering education p881-896. DSS: Dam Site — Expert System for Edu- Vertical Leakage in Egypt’s Nile Valley: Estima- cation, Bernard A.E ngel and David B. Beasley, tion and Implications, James W. Warner, Tim- IR Sept./Oct. OLA n 782. othy K. Gates, Fatma A. R. Attia and Wadie F. Mankarious, IR July/Aug. 91, p515-533. Estimation Accuracy of Estimated Reference Crop Evapo- Drainage systems transpiration, George H. Hargreaves, IR Nov./ Drop Manholes in Supercritical Pipelines, Dec. 89, p1000-1007. rf C. Christodoulou, IR Jan/Feb. 91, Direct Solution to Surface Irri tion Advance In- Pp verse Problem, Albert J. iemmens, IR July/ Nonlinear Steady State e into Drains, Aug. 91, p578-594. Salihu Mustafa oy N. A. Rafindadi, IR May/ June 89, p358-376 Impoyrsttaenmc e aof Dem and EsNtiummaatino n —in —— Jim Drains Loftis, Ramchand -Oad and Alan y, IR Backwater Curves in Circular Channels, Willi H. May/June 91, p336-349. Hager, IR Mar./Apr. 91, p173-183. Evaporation Nonlinear Steady State e into Drains, Accuracy of oo aoe Crop Evapo- Salihu Mustafa and N. A. Rafindadi, IR May/ transpiration, a . Hargreaves, IR Nov./ June 89, p358-376. Dec. 89, p1000-100 Droughts NOAA Polar-Orbiting Satellite APT Data in ae of Precipitation —, } by Use of Lake Evaporation Estimation, Jian-Nong Xin ging Method, Tiao J. Chang, IR Nov./Dec. and Sun F. Shih, IR July/Aug. 91, p547-557. Th p935-943. Prediction of Class A Pan Evaporation in South- Simulation Models of Sequences of Dry and Wet west Idaho, Clayton L. Hanson, IR Mar./Apr. Days, J. W. Delleur. J. Chang and M. L. 89, p166-171. Kavvas, IR May/J ane 89, p344-357. Sensitivity of ee fay) Evaporation Es- timates, K. C. Gan cMahon and I. C. Earthmoving O’Neill, IR May/June 91, p324-335. Salt Movement Under Level-Basin Irrigation, D. F: Champion,E . G. Kruse, S. R. Olsaendn D . Evapotranspiration C. Kincaid, IR Sept./Oct. 91, p642-655. Accuracy of Estimated Reference Crop Evapo- transpiration, a= . Hargreaves, IR Nov./ Earthwork Dec. 89, p1000-100 —— f Least-Squares Land Leveling, N. Evapotranspiration Estimation for Data-Short re-Selassie and L. S. Willardson, IR Environment, Sun F. Shih and Ke S. Cheng, IR Nov./Dec. 91, p962-966. Jan./Feb. 91, p107-122. Economic analysis FAO-24 Reference Evapotranspiration Factors, Optimal Desi;i gno f Parabolic Canals, G. V. Lo- Richard G. Allen and Wiiliam O. Pruitt, IR ganathan, IR Sept./Oct. 91, p716-735. Sept./Oct. 91, p758-773. Economics "Dat, iicc Bhaalradn ceH. MCoudeenlc a,U siInRg NNoevu.t ro88n, Ppr6o4b4e- Simulation of Supplemental Irrigation from On- FIRa rMma yP/oJnudnse, 9J1., Gp.4 0A8r-n4o2l4d. and C. O. Stockle, P<A. Bowmainn ,M idFw.e sWti:l liLaems soSnism mfornosm aIlnldi noBirs,i aJne aCn. Effluents Kimpel, IR Sept./Oct. 91, p700-715. Subsurface Microirrigation with Effluent, Gideon Expansion Oron, Joel DeMalach, Zafrir Hoffman and Rodica Cibotaru, IR Jan./Feb. 91, p25-36. Practical Two-Stage Pipe Expansions for Centrif- ugal Pumps, Walter L. Trimmer and John A. Egypt Fazio, IR Jan./Feb. 91, p91-106. Irrigation of Small-Level Basins in t, Wadie Expert systems ious, Timothy 2 tes and Mohamed A. -H. Ra dy, IR May/June 91, DSS: Dam Site Selector Expert System for Edu- p361-376. cation, Bernard A. Engel and David B. Beasley, IR Sept./Oct. 91, p774-782. Energy Testing of Soil Moisture ee - Model for Practical bingy 4 Pipe Expansions for Centrif- Army y Land M rs, J. Davis, S. M. ugal Pumps, Walter L. Trimmer and John A. Cuddy, P. Laut, J. Goods i. P. A. Fazio, IR Jan./Feb. 91, p91-106. Whigham, IR July/Aug. 91, p476-4! SUBJECT INDEX GEOGRAPHIC INFORMATION SYSTEMS Farm management Mie asurement ooff Irrigation FFlloowwss Through Irriga- ome g jews Modules, P. K. a|nd a Wesley ‘Wiy Woliecder4 IR Folyi’ 91 A tyanarayana, IR Maviune 90, p444-453. p596-599. ” Farms Flow rates a ae of Low-Discharge Baffle-Sluice Correction to Parshall o< Calibrations at Low Mod K. Mishra, P. Larsen = T. Sa- tyanarayans, IR May/Jun9e0 , p444-453 Taher ERS ept/Oct.9 1, p800-804. I tion of Small-Level Basins in Deicoment of Low-Discharge Baffle-Sluice Mankarious, Timothy K. P. K. Mishra, P. Larsen “< T. Sa- Mohamed A. -H. Rady, IR May/June 91, per IR May/June 90, p444-453 p361-376. i istics of Circular Flume, Zohrab i iohammed Field investigations Yousaf, IR July/Aug. a, p558-566. Field Study on Irrigation Delivery Performance, Methods of M page Through Joel D. Palmer, Albert J. Clemmens and Alien Closed-Conduit Irrigation S: L. C. Kjel- R. Dedrick, IR July/Aug. 91, p567-577. poy my my9 1, p748-757. I esof Small-Level Basins in t, Wadie Simple Methods for Predicting Flow to Drains, Timothy K. tes and G. ~~ and R. W. Skaggs, IR Nov./Dec. 91, H. Rady, IR May/June 91, p88 1-896. p361-376. Flumes Field tests Correction to Yo _ Se gee = at Lmoown d -—~ of Deficit Irrigation and Irrigation Fre- Epon an Wheat Yields, Marshal Eagsha nd Taheri, Ti SSeepptt ,/ Oct.a 1,a 7 a akamura, IR Mar./Apr. 89, p1 72-184. Hydraulic ge < Circular Flume, Zohrab , Saeed Jorat and Mohammed Finite differences Yousaf, IR July/Aug. 91 *p558-566. Numerical Modeling of Two-Dimensional Tran- sient Flow to Ditches, Saleem Ahmad, Deepak Froude number ee. and B. S. Mathur, IR Nov./Dec. 91, Critical Depth, Velocity Profile, and Channel oe R. J. Heggen, IR May/June 91, p442- Flood drainage ~~ Coefficient of Lateral Diversion from Roughness Me for Overland Flow in Sub- Trapezoidal porwr Leneee Cheong, IR catchments, S.Y . Liong, S. a and D. July/Aug. 91, p461-475 K. Brady, IR Mar. /Apr1. 89,p 203-214 Functional analysis Floods Infiltration action from Furrow StreamA i Simulation Models of Sequences of Dry and Wet vance, R. DeTar, IR July/Aug. 49. Days, J. W. Delleur. + a= nMd. L . p722-730. Kavvas, IR Maylene 89, p344-35 Furrow a. Floors Furrow ‘arameters, Thomas J. Trout, Open ge ty Flow Thro Transverse Floor IR Sep/Oct 991,1 r eisesa gt S. Ramam Duc Minh Tran Infiltration Function from Furrow Stream Ad- B. Carballada, IR Mar. /Apr. 89, p248- vance, William R. DeTar, IR July/Aug. 89, p722-730. Florida =} of Furrow Irrigation System Cost — Variables, J. Mohan Reddy and Hora- Evapotranspiration Estimation for Data-Short cio M. ApoiIaR yMaor./,Apr . 91, p201-219. Environment, Sun F. Shih and Ke S. Cheng, IR Jan./Feb. 91, p107-122. Space Solution of Kinematic-Wave Model by Time Iteration, W. W. Wallender and Junji NOAA oe Satellite APT Data in Yokokura, IR Jan/Feb. 91, p140-144. Lake Evaporation Estimation, Jian-Nong Xin and Sun F. Shih, IR July/Aug. 91, p547-557. Gates Flow measurement Centtirona,l izGe.d bag icW .f or R. CaWnaallk eOOr,pp eerar Alternative Linear Weir pale, Fan ag K. May/June 1.M orr 93. Swamee, Santosh K. Pathak, Mahesh Agarwal it Anwar S. Ansari, IR May/June 91, p31l- Dee Con in Channel ietwork Model, Tahir Husain, in U. Khan and Suhail M. Khan, IR Jan./Feb. 91, p48-63. Correction to Parshall Flume Calibrations at Low Disc , Steven J. Wright and Bahram Geographic information systems Taheri, IR Sept./Oct. 91, p800-804. Testing of Soil Moisture Prediction Model for Im rues 8ay = V-Notch or Chimney Weir, Army Land M . J. R. Davis, S. M. a Murthy and D. P. Giri , IR Cuddy, P. Laut, aes 27 and P. A. May/ione 90.p 374-386. Whi , IR July/Aug. 91, p476-489. GEOMETRY 1891 ANNUAL INDEX Method for Determination of Hydraulic Conduc- urrow Geometric Parameters, Thomas J. Trout, tivity in Unsaturated Porous Media, Abolfazl Pu septiOcn 91, p613-634. a and Nicholas Sitar, IR Jan/Feb. 91, Government agencies Overseas Perspectives for Managi Irrigation Hydraulic jump Drainage in California, Emery . Roe, IR Design of tos Jump Chambers, Scott F. May/June 91, p350-360. Korom, Simsek Sarikelle and Andrew L. Simon, IR Mar./Apr. 90, p143-153. Green-Ampt model Precipitation aw and Hydraulic models unoff, J. A.V an Mullem, IR oy ega Centralized bg eo ic for Canal Opera- p944-959. tion, G. yay W. R. Walker, IR Ground water May/June ThM or 93. Irrigation in Midwest: Lessons from Illinois, Jean Hydraulics A. Bowman, F. William Simmons and Brian C. Kimpel, IR Sept./Oct. 91, p700-715. Backwater Curves in Circular ee Willi H. Hager, IR Mar./Apr. 91, pi73-11 83. Optimal Spacing of Tube Wells in Relation to Channel Losses and Lining, Bimal Chandra Direct Solution to Surface Irri tion Advance In- Mal, IR Sept./Oct. 91, p791-799. verse Problem, Albert J. emmens, IR July/ Aug. 91, p578-594. Setting Time _ 7 Bentonite Water-Well Annulus den and James F. Drop Manholes in Supercritical Pipelines, Ruff, IR July/Aug. “ O83 545. wf C. Christodoulou, IR Jan/Feb. 91, Vertical Leakage in Egypt’s Nile Valley: Estima- p37. tion and Implications, James W. Warner, Tim- Hydraulic Characteristics of Circular Flume, othy K. Gates, Fatma A. R. Attia and Wadie F. Zohrab Samani, Saeed Jorat and Mohammed Mankarious, IR July/Aug. 91, p515-533. Yousaf, IR July/Aug. 91, p558-566. Ground-water management Optimal Desi im of Parabolic Canals, G. V. Lo- ganathan, IR Sept./Oct. 91, p716-735. SECTAR for Economically Optimal, Sustained ee, a Planning, R. C. Peralta, Practical Two-S' Pipe Expansions for Centrif- K. Asgharia nd R. Shulstad, IR Jan./Feb. 91, Pumps, Walter L. Trimmer and John A. p5-24 Fazio, IR Jan./Feb. 91, p91-106 Roughness Coefficients for Selected Residue Ma- Ground-water mounding terials, John E. Gilley, Eugene R. Kottwitz and Method for Determination of Hydraulic Conduc- Gary A. Wieman, IR July/Aug. 91, p503-514. tivity in Unsaturated Porous Media, Abolfazl Shamsai and Nicholas Sitar, IR Jan./Feb. 91, Hydrographs p64-78. Response of Muskingum Equation to Step Input, Ground-water quality ohammed Akram Gill, IR July/Aug. 89, p736-738. Nitrate Leaching . Irrigation on Coastal Plain Py W. F. Ritter, R. W. Scarbor~o “— Roughness Coefficients for Selected Residue Ma- andA . E. M. Chirnside, IR July/Aug. 91 terials, John E. Gilley, Eugene R. Kottwitz and o190.302" Gary A. Wieman, IR July/Aug. 91, p503-514. Grouting Hydrologic models Setting Time a i Bentonite Water-Well — ic Balance Model Using Neutron Probe Annulus Seals,F ; den and James F. ichard H. Cuenca, IR Nov. 88, p644- Ruff, IR julyAug. 9911, O 85 545. Head loss Hydrology Design of R -~Channel Expansive Precipitation Distributions and Green-Ampt Transitions, Prabhata K. Swamee and Bharat Runoff, J. A. Van Mullem, IR Nov./Dec. 91, C. Basak, IR Nov./Dec. 91, p827-838. p944-959. Interactive ee (ae ye Design of Inverted Sriiepsh, oInRs , MaPrr.a/vAip rS.h re9s1t, hpa 23a3n-d2 54J.o hannes J. DeV- Rocuagthcnhemsesn tsV,a lSu.e sY . fLoiro ngO,v eSr.l aSnedl valFilnogwa m ina ndS ubD-. K. Brady, IR Mar./Apr. 89, p203-214. Measurement of Irrigation Flows Through Irriga- tion Leen Ian C. Tod, Mark E. Grismer Runoff Curve Numbers for Reclaimed Surface and WesleyW .. Wallender, IR July/Aug. 91, Mines in Pennsylvania, John B. Ritter and p596-599. | ae W. Gardner, IR Sept./Oct. 91, p656- Hydraulic conductivity Simulation of Supplemental Irrigation from On- _ Yew angT e Soils, H. C. Sharma, Farm Ponds, J. G. Arnold and C. O. Stockle, r and Sewa Ram, IR May/June 91, p408-424. Tk Mar./Apr. 91,a e ae Kriging of Hydraulic Conductivi for Subsurface Illinois "Dyr a ign, J. Gallichand, . Prasher, Irrigation in Midwest: Lessons from Illinois, Jean ton and D. Marcotte, iR Sept./ A. Bowman, F. William Simmons and Brian C. Oct. 91, 7-681. Kimpel, IR Sept./Oct. 91, p700-715. SUBJECT INDEX IRRIGATION EFFICIENCY In situ tests Field Stuy on Irrigation Delivery Performance, Method for Determination of Hydraulic Conduc- Joel D. er, Albert J. Clemmens and tivity in Unsaturated Porous Media, Abolfazl R. Dedrick, IRJ uly/Aug. 91, p567-577. rey and Nicholas Sitar, IR Jan./Feb. 91, "Data,R ichard Model Using Neutron Probe p64-78 hard H. Cuenca, IR Nov. 88, p644- Infiltration Igationi n +x Lessons from Illinois, Jean Direct Solution to Surface Irri tion Advance In- William Simmons and Brian C. verse Problem, Albert J. iemmens, IR July/ Kimpel IR "athy- 91, p700-715. Aug. 91, p578-594. Irrigation Uniformity Relationships for Irrigation Infiltration Function from Furrow Stream Ad- System Management, Albert J. Clemmens, IR vance, William R. DeTar, IR July/Aug. 89, Sept./Oct. 91, p682-699. p722-730. Methods of Measuring Pumpage Through Precipitation Distributions and Green-Ampt Closed-Conduit Irrigation enn L. C. Kjel- unoff, J. A. Van Mullem, IR Nov./Dec. 91, strom, IR Sept./Oct. 91, p748-757. p944-959. Nitrate Leaching Under Irrigation on Coastal Simple R ession Procedure for Power Func- Plain Soil, W. F. Ritter, R. W. Scarbo tion, J. . Valiantzas, IR Sept./Oct. 91, p784- and A. E. M. Chirnside, IR July/Aug. 91, 790. 5490-302. Space Solution of Kinematic-Wave Model by Overseas Perspectives for Managi itotie Time Iteration, W. W. Wallender and Junji Drainage in ———_ Emery M. Roe,I Yokokura, IR Jan./Feb. 91, p140-144 mers 91, p350-360 Infiltration rate Practical Two-S' Pipe Expansions for Centrif- Infiltration Function from Furrow Stream Ad- ugal Pumps, Walter L. Trimmer and John A. vance, William R. DeTar, IR July/Aug. 89, Fazio, IR Jan./Feb. 91, p91-106. p722-730. ny and Potential of Irrigated nm Sub-Saharan Africa, Mahmood Inflow Mar/Apr. 91, p1 55-172. Response of Muskingum Equation to Step Input, - Movement ay Level-Basin Irrigation, D. ohammed Akram Gill, IR July/Aug. 89, F. Champion, E. G. Kruse,S .R . Olsen and D. p736-738. C. Kincaid, TR Sent/ Oet 91, p642-655. Infrared analysis -——y oef e go Irrigation from On- ‘arm Pon > fae and C. O. Stockle, NOAA ceo ay I Satellite APT Data in IRk M ayitune di.p 408-424 Lake Evaporation t imation, Jian-Nong Xin and Sun F. Shih, IR July/Aug. 91, p547-557. Irrigation efficiency Calculation of Distribution and. ow for Nonuniform i tion, A. W. Warrick, E. Hart Responseo f Muskingum Equation to Step Input, and M. Yitayew, IR July/Aug. 89, pp6674 -686. hammed Akram Gill, IR July/Aug. 89, p736-738. Destopanens of eee er Modules, P. K. Mishra,P . Interaational development tyanarayana, IR May/June 90, p444-453 Overseas Perspectives for Managing Irrigation Im —%; of Demand Estimation in Irigation- Drainage in California, Emery M. Roe, IR . Jo yo Jim ee a 91, p350-360. Lofts. d and Alan ly, IR May/Jun~e ~e r Irrigation Irrigation of Small-Level Basins in Calculation of Distribution and Efficiency for en, Timothy K. Nonuniform Irrigation, A. W. Warrick, E. Hart Mohamed A. -H. Rady, IR May/June 91, and M. Yitayew, IR July/Aug. 89, p674-686. p361-376. Development of Low-Discharge —_—e? Measurement of Irrigation Flows Through Irriga- Modules, P. K. Mishra, P. Larsena nd T. Sa- tion Lh ag Ian C. Tod, Mark E. ee tyanarayana, IR May/June 90, maae-453. and WesleyW .. Wallender, IR July/Aug. 91, yee of Clay ey Aquifer. I: p596-599. Hydrol one Assessment E. Grismer and I. Multicriterion Strategic Planning for Improved C. Tod, IR Mar./Apr. 9i, p255-270. Irrigation Delivery. I: Aone, hy K. Drainage of Clay Overlying Artesian Aaate. II: Gates, Walter E. ieyder, Darre! ontane Technical Analysis, I. C. Tod and M. E. Gris- and Jose D. Salas, IR Nov./Dec. 91,S t mer, IR Mar./Apr. 91, p271-284. Multicriterion Strategic Planning for Improved a men rg ng Concept in Channel —— ——— il: Application, Walter E. Network Model, Tahir Husain, Hasin U. Khan ~_—. Timothy K. Gates, Darrell G. Fontane and SuhailM . Khan, IR Jan./Feb. 91, p48-63. Jose D. Salas, IR Nov./Dec. 91, p914-934. Effects of Deficit Irrigation and Ir“ri po Fre- Systems me of Tank Irrigation: I. C uency on Wheat Yields, Marshall ish and Staggering, S. G.M ayya and Rama Prasad, I rian Nakamura, IR Mar. /Apr. 89, p1 72-184. ennain e8 9, p384-405. FAO-24 Reference Evapotranspiration Factors, er Management for —e Rice I tion, Richard G. Allen and William O. Pruitt, IR i Z. Siddeek, Theo A. Dillaha an 4G V. Sept./Oct. 91, p758-773. Loganathan, IR Aug. 88, p407-423. IRRIGATION ENGINEERING 1991 ANNUAL INDEX Irrigation engineering Iteration Improved Inverted V-Notch or ne ik Space Solution of Kinematic-Wave Model by Keshava Murthy and D. P. Giri Time Iteration, . Wallender and Junji May/Jun9e0 , p374-386. Yokokura, IR Jan./Feb. 91, p140-144. Simple Aer Procedure for Power Func- Kinematic wave theory de Valiantzas, IR Sept./Oct. 91, p784- Fractal Concept Used in Time-of-Concentration Estimates, Gert Aron, James E. Ball and Irrigation practices Thomas A. Smith, IR Sept./Oct. 91, p635-641. Direct Solution to Surface Irri tion Advance In- Kinematics vAeurgs.e 91P,r opb5l7e8m-,5 94A.l bert J. iemmens, IR July/ Rocuagthcnhemsesn tsV,a lSu.e sY . fLoiro ngO,v eSr.l aSnedl valFilnogwa m ina ndSu bD-. a in Midwest: Lessons from Illinois, Jean K. Brady, IR Mar./Apr.8 9, p203-214. A. Bowman, F. William Simmons and Brian C. Kimpel, IR Sept./Oct. 91, p700-715. Knowledge-based systems I tion of Small-Level Basins in , Wadie DSS: Dam Site Selector Expert System for Edu- Mankarious, Timothy K. tes and cation, Bernard A. Engel and David B. Beasley, Mohamed A. -H. Rady, IR May/June 91, IR Sept./Oct. 91, p774-782. p361-376. Laboratory tests Nitrate Lents _ nCo n Coastal Hydraulic —— gy of Circular Flume, Plain ~~ TF. F. Ritter, Ww. TT hrab Samani, Jorat and Mohammed and A. ey IR July/Aug. Yousaf, IR Telus< T p558-566. 5490-302" Local Scour Downstream of Box-Culvert Outlets, Simulation of Supplemental Irrigation from On- H. Abida and R. D. Townsend, IR May/June Farm Ponds, J. G. Arnold and C. O. Stockle, 91, p425-440. IR May/June 91, p408-424. Lakes Irrigation programs NOAA tention tary BS atellite APT Data in Problems and Potential of Irrigated Agieeness Lake Evaporation Estimation, Jian-Ni Xin in Sub-Saharan Africa, Mahmood , IR and Sun F.S hih, IR July/Aug. 91, p547-557 Mar./Apr. 91, p155-172. Land reclamation Irrigation scheduling Runoff Curve Numbers for Reclaimed Surface Centralized Scheduling ic for Canal Opera- Mines in Pennsylvania, John B. Ritter and tion, G. P. M an W. R. Walker, IR a W. Gardner, IR Sept./Oct. 91, p656- May/June 91, p377-393. Effects of Deficit Irrigation and Irrigation Fre- Fenw m Be Wheat Yields, Marshall Engha nd Laplace transform akamura, IR Mar./Apr. 89, p1 72-184. i of Muskingum Equation to Step Input, i mt oy boon nb g RDSel ivery Performance, nom Akram Gill, IR July/Aug. 89, Ciemmens and Allen p " RiD edrick, IR July/Aug. 91, p567-577. Laterals Projectwide Water-Order Schedulingbb yo e ng Discharge Coefficient of Lateral Diversion from er, Brian J. Boman and Charles Higgins,I Trapezoidal oa Hin-Fatt Cheong, IR May/June 91, p394-407. July/Aug. 91, p461-475 Irrigation systems Leaching Design of ee og: Integrated Ap- Nitrate Leaching Under Irrigation on Coastal proach, Emad H. Imam,A l S. Bazaraa mm gh il, W. F. Ritter, R. W. Scarboro and Ashraf S. Zaghlool, IR Nov./Dec. 91, and A. E. M. Chirnside, IR July/Aug. 91, p852-869. p490-502. Development of Low-Discharge Baffle-Sluice Salt Movement Under Level-Basin Irrigation, D. Modules, P. K. Mishra, P. Larsen and T. Sa- pion, E. G. Kruse, S. R. Olsen and D. tyanarayana, IR May/June 90, p444-453. €. Kincaid, IR Sept./Oct. 91, p642-655. Im sy of Demand Estimation in ah tin em Management, Numan Mi Jim Leakage Ramchand Oad and Alan Vertical Leakage in Egypt’s Nile Valley: Estima- Mangum 91, 7336-349 tion and Implications, James W. Warner, Tim- Subsurface Microi tion with Effluent, Gideon othy K. Gates, Fatma A. R. Attia and Wadie F. Oron, Joel DeMalach, Zafrir Hoffman and Mankarious, IR July/Aug. 91, p515-533. Rodica Cibotaru, IR Jan/Feb. 91, p25-36. Least squares method Irrigation water Practical <- Grading Based on Least Squares, J. Scaloppi and Lyman S. Willardson, — [= eeme d Relationships for Irrigation IR May 86, p98-109. Management, Albert J. Clemmens, IR hey /Oct. 91, p682-699 Leveling Projectwide Water-Order Scheduling by Comput- Application cf Least-Squares Land Leveling, N. er, Brian J. Boman and Charles Higgins, IR A. Gebre-Selassie and L. S. Willardson, IR May/June 91, p394-407. Nov./Dec. 91, p962-966. SUBJECT INDEX a 7 Grading Based on Least Squares. Modeling Edmar J. Scaloppi and Lyman S. Willardson, Calculation of —— yy ot Efficiency for IR May 86, p98-109. Nonuniform Warrick, E. Hart and M. Yitayew. J jam. 89, p674-686. Linear programming 7v ay! of Tank Irrigation: I. oR Models G. Mayya and Rama Prasad,I Dynamic-Node-Num in Gee Meio 89, 7384-405. —_ ——. Tahir U. Khan M. Khan, IR Jan/Feb. 91, p48-63. Linearity Reem Geometric Parameters, Thomas J. Trout, Alternative Linear Weir Design, Prabhata K. IR Sept./Oct. 91, p613-634. Swamee, Santosh K. Pathak, Mahesh Agarwal = Anwar S. Ansari, IR May/June 91, p311- Space Solution of -__ooe Model by Time Iteration, W. Wallender and Junji Yokokura, IR Jan Fee.9 1, p140-144. Management Momentum transfer Irrigation Uniformity Relationships for Irrigation Discharge Coefficient of Lateral Diversion ~- System Management, oo J. Clemmens, IR Trapezoidal ow Hin-Fatt Cheong,I Sept./Oct. 91, p682-699 July/Aug. 91, p461-475 Overseas Perspectives for Managi Irrigation Drainage in California, Emery . Roe, Multiple purpose structures May/June 91, p350-360. Importance of Demand Estimation in Irrigation- ent, Numan Mi Jim Manholes Loftis, Ramchand Oad and Alan ly, IR Drop Manholes in Supercritical Pipelines, May/June 91, p336-349. George C. Christodoulou, IR Jan/Feb. 91, p37-47. Nile River Valley Vertical in Egypt’s Nile Valley: Estima- Mathematical models tion and Implications, James W. Warner, Tim- Drainage of Clay Overlying Artesian Aquifer. II: othy K. Gates, Fatma A. R. Attia and Wadie F. Technical Analysis,I .C . Tod and M. E. Gris- Mankarious, IR July/Aug. 91, p515-533. mer, IR Mar./Apr. 91, p271-284. Nitrates Optimal Spacing of Tube Wells in Relation to Channel Losses and Lini Bimal Chandra Drainage-Subirrigation — on Water Quality Mal, IR Sept./Oct. 91, p791-799. in Georgia a 2 . L. Thomas, A. Shir- mohammadi, R. R. Lowrance and M. C. Mathematics Smith, IR Jan./Feb. 91, p123-137. Prediction of Class A Pan Evaporation in South- Nitrate Leaching ‘s Irrigation on Coastal west Idaho, Clayton L. Hanson, IR Mar./Apr. Plain -_ Ww. Ritter, R. W. Scarbo 89, p166-171. and A. E. M. vonneide IR July/Aug. 91, p490-502 Measurement Nitrogen Hydraulic Characteristics of Circular Flume, Zohrab Samani, Saeed Jorat and Mohammed Sediment-Related Transport of Nutrients from Yousaf, IR July/Aug. 91, p558-566. Southwestern Watersheds, S. M. Bolton, T. J. hv a and R. A. Cole, IR Sept./Oct. 91, p736- Measuring instruments Hydraulic eng oe of Circular Flume, Nonlinear analysis Zohrab Samani, Saeed Jorat and Mohammed Nonlinear Steady State into Drains, Yousaf, IR July/Aug. 91, = Salihu Mustafa and N. A. indadi, IR May/ Methods of Measuri mpage Through June 89, p358-376. Closed-Conduit ae Souee. L. C. Kjel- strom, IR Sept./Oct. 91, p748-757. Notches Improved Inverted tyme - [= Weir, Microcomputers K. Keshava Murthy P. iridhar, IK ~e-= of Least-Squares Land Leveling, N. May/Jun9e0 , p374- 86. Gebre-Selassie and L. S. Willardson, IR Now Dee 91, p962-966. Numerical analysis Normal-Depth Calculations in Com: Channel Mines Sections, Edward D. Shirley and Vicente L. Runoff Curve Numbers for Reclaimed Surface Lopes, IR Mar./Apr. 91, p220-232. Mines in Pennsylvania, John B. Ritter and | gue W. Gardner, IR Sept./Oct. 91, p656- Numerical models Design Procedure for Flow Over Side Weirs, Ali aes and Roger H. Smith, IR Jan./Feb. 91, Model verification p79-90. Testing oof m A arorsnen ve _—— for Numerical Modeli: of Two-Dimensional Tran- Army PS Davis, S. M. sient Flow to Ditc leem Ahmad, Deepak Ciday, 7. fe Goodspeeda nd P. A. — a B. S. Mathur, IR Nov./Dec. 91, Whigham, IR July/Aug. 91, p476-489. p : NUMERICAL MODELS 1991 ANNUAL INDEX Simple Methods forS g mem Flow to Drains, Simulation of Supplemental Irrigation from On- G. Fi and R.W . Skaggs, IR Nov./Dec. 91, Farm Ponds, J. G. Arnold and C. O. Stockle, aIR a 91, p408-424. Space Solution of ~__ooO- Model by Time Iteration, W. Wallender and Junji Yokokura, Th Jan/Feb. 91, p140-144. ue se ofb eg y = ay Equation to Step Input, 1 ne Gill, IR July/Aug. 89, Nutrients Pe Sediment-Related Transport of Nutrients from Overland flow Southwestern Watersheds, S. M. Bolton, T. J. a and R. A. Cole, IR Sept./Oct. 91, p736- Fractal Concept Used in Time-of-Concentration Estimates, Gert Aron, James E. and Thomas A. Smith, IR Sept. /Oct. 91, p635-641. Ohio Parabolic bodies Investigaatgio Mne tohfo dP,r ecTiipaiot atJi.o nC hDaron g,I+ R Nboyv .U/sDee c.o f Optgiamnaatlh anD,es i;IiR gSneo pft ./POacrta.b ol9i1c, pC7a1n6a-l7s3,5 . G. V. Lo- 91, p935-943. Parameters Open channel flow Simple Ri ession Procedure for Power Func- Critical oe. Velocity Profile, and Channel tion, J. . Valiantzas, IR Sept./Oct. 91, p784- a R.J . Heggen, IR May/Juae 91, p442- 790. Normal-Depth Calculations in Complex Channel Particle size Sections, Edward D. Shirley and Vicente L. Dripper-Clogging Factors in Wastewater Irriga- Lopes, IR Mar./Apr. 91, p220-232. tion, Avner Adin and Mollie Sacks, IR Nov./ Open Channel Flow Thro Transverse Floor Dec. 91, p813-826. Outlets, A. S. Ramamurthy, Duc Minh Tran =e L. B. Carballada, IR Mar. /Apr. 89, p248- Peak flow Precipitation Distributions and Green-Ampt Runoff, J. A. Van Mullem, IR Nov./Dec. 9i, Open channels p944-959. Dynamic-Node-Numbering Concept in Channel Pennsylvania Network Model, Tahir Husain, Hasin U. Khan and SuhailM . Khan, IR Jan./Feb. 91, p48-63. Runoff Curve Numbers for Reclaimed Surface Mines in Pennsylvania, John B. Ritter and Hydraulic mang mo 5 of Circular Flume, aa W. Gardner, IR Sept./Oct. 91, p656- Zohrab i, Saeed Jorat and Mohammed Yousaf, IR Tuly/Aug. 91, p558-566. Percolation Openings Drainage of Clay eng yg Aquifer. I Discharge Coefficient of Lateral Diversion oo Hydrol ficA ssessm Grismer and L Trapezoidal mel, Hin-Fatt Cheong,I C. Tod, IR Mar./Apr. 9i, p255-270. July/Aug. 91, p461-475. Drainage of Clay Overlying py Aquifer. II: Operation Technical Analysis, I.C . Tod and M. E. Gris- mer, IR Mar len. 91, p271-284. ae ie a for Canal Opera- tion, G. . R. Walker, IR Method for Determination of Hydraulic Conduc- Mav Sones9 1,i e oe tivity in Unsaturated Porous Media, Abolfazl ee and Nicholas Sitar, IR Jan./Feb. 91, Optimal control methods Design of R “Channel Expansive Salt Movement Under Levei-Basin Irrigation, D. eo hey Prabhata Swamee and Bharat F. Champion, E. G. Kruse, S. R. Olsen and D. C. Basak, IR Nov./Dec. 91, p827-838. C. Kincaid, IR Sept./Oct. 91, p642-655. Optimal design Performance evaluation - Optimal Desi;i gno f Parabolic Canals, G. V. Lo- Field Study on Irrigation Delivery Performance, ganathan, IR Sept./Oct. 91, p716-735. Joel D. Palmer, Albert J. Clemmens and Allen Sensitivity of toa! Irrigation System Cost and R. Dedrick, IR July/Aug. 91, p567-577. Design Variables, J.M ohan Reddy and Hora- Importance of Demand Estimation in Irrigation- cio M.A polayo, IR Mar./Apr. 91, p201-219. ystem Management, Numan —_ > Loftis, Ramchand Oad and Alan ly, I Optimization May/June 91, p336-349. Optimal oes of Tube Wells in Relation to Permeability Channel Losses and —,! Bimal Chandra Mal, IR Sept/Oct. 91, p791-799. x pee e in 45> Soils, H . C. Sharma, an, P. N. al and Sewa Ram, Optimization models Tkf acies 91, p184-2 SECTAR for Economically Sag ay Sustained On the Correspondence Between Brooks-Co Ground-Water Log Planni Peralta and Van Genuchten Models, R. J. Lenhard, J. 2 a=nd R. Shulstad, iej an eed. 91, C. Parker and S. Mishra, IR July/Aug. 89, p5-24. p744-751.

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SUBJECT INDEX Accuracy Baffles Accuracy of Estimated Shonen bg Fy ay Development of Low-Discharge Baffle-Sluice transpiration, argreaves, iov./ Modules,P . K. Mishra,P . Larsaendn T . Sa- Dec. 89, p1000-p1o or Po IR May/June 90, p444-453. Africa Problems and Potential of Irrigated Agtestine onyi c Baiance Model Using Neutron Probe in Sub-Saharan Africa, Mahmood , IR ichard H. Cuenca, IR Nov. 88, p644- Mar./Apr. 91, p155-172. Agricultural economics Bentonite Problems and Potential of be ited culture Setting Time Effects on Bentonite Water-Weil in Sub-Saharan Africa, om Sy me Annulus Seals, Fred L. Ogden and James F. Mar./Apr. 91, p155-172. Ruff, IR July/Aug. 91, p534-545. SECTAR for Economically Guied. nee Calibration a Yield a." Peralta, ~ .T ae and R. Shulstad, IR AS /Feb. 91, Accuracy of eines ged On ee, p = transpiration, argreaves, liov./ Pies8 9, 080 100 Agricultural engineering — A“naal e of Tank Irrigation: I. ef ri G. Mayya and Rama Prasad, I pea Drai: Water—How Should it be noite 89, p384-405. oe te - Wil- Johnston and William J. Miller, IR Agricultural wastes SanF eb. 89, p3-8. icultural Drainage Water—How Should it be Canal design egulated in California? Stephen K. Hall, Wil- liam R. Johnston and William J. Miller, IR Optimal yr of Parabolic Canals, G. V. Lo- Jan./Feb. 89, p3-8. ganathan, IR Sept./Oct. 91, p716-735. Air temperature Canals Accuracy of Estimated Lg ee Crop Evapo- Centralized Scheduling a ghf or Canal Opera- transpiration, Geo: . Hargreaves, IR Nov./ tion, G. P. Merki . R. Walker, IR Dec. 89, p1000-1 oon May/June 91, p377- 93. Design of ee Canals: Integrated Ap- Analysis proach, H. Imam, Abdallah S. Bazaraa Calculation of Distribution and Efficiency for od Ashraf S . Zaghlool, IR Nov/Dec. 91, Nonuniform Irrigation, A. W. Warrick, E. Hart p852-869. and M. Yitayew, oR July/Aug. 89, p674-686. Design of Ri -~Channei Expansive oe! — in Layered Soils, H. C. Sharma, Transitions, Prabhata Swamee and Bharat an, P. N. Ka r and Sewa Ram, C. Basak,I R Nov./Dec. 91, p827-838. ik Mar lAr 91, p184-2 Optimal —% Ffo f Parabolic Canals, G. V. Lo- Analytical techniques ganathan, IR Sept./Oct. 91, p716-735. Simple Methods for Predicting Flow to Drains, Projectwide Water-Order Scheduling byC omput- G. Fipps and R. W. Skaggs, IR Nov./Dec. 91, er, Brian J. Bomanad Cnharl es HigginsI, R p88 1-896. May/June 91, p394-407. Aquifers Channels, waterways Drainage of Clay een ag ge Aquifer. I: Design Procedure for Flow Over Side Weirs, Al Hydrol 4 Assessmen E. Geismer and I. 090" and Roger H. Smith, IR Jan./Feb. 91, C. Tod, IR Mar./Apr. 9i, p255-270. Drainage of Clay Overlying Artesian Aquifer. II: Normal-Depth Calculations in Complex Channel Technical Analysis, I. C. Tod and M. E. Gris- Sections, Edward D. Shi and Vicente L. mer, IR Mar./Apr. 91, p271-284. Lopes, IR Mar./Apr. 91, p220-232. Vertical Leakage in Egypt’s Nile Valley: Estima- Optimal es |of Tube Wells in Relation to tion and Implications, James W. Warner, Tim- Channel Losses and Lining, Bimal Chandra othy K. Gates, Fatma A. R. Attia and Wadie F. Mal, IR Sept./Oct. 91, p791-799. Mankarious, IR July/Aug. 91, p515-533. Characteristics Automation Local Scour Downstream of Box-Culvert Outlets, Centralized Scheduling pow ghfo r Canal Opera- H. Abida and R. D. Townsend, IR May/June tion, G. P. Merkl R. Walker, IR 91, p425-440. May/June 91, p377-393. Clays Backwater mere of Clay Overlying Artesian Aquifer. I: Backwater Curves in Circular Channels, Willi H. ‘fmm t MEE . Grismer and I. Hager, IR Mar./Apr. 91, p173-183. e‘ Tod Mar./Apr. 9i, p255-270. CLAYS 1991 ANNUAL INDEX Drainage of Clay Overlying Artesian Aquifer. II: Normal-Depth Calculations in Complex Channel Technical Analysis, I. C. Tod and M. E. Gris- Sections, Edward D. Shirley and Vicente L. mer, IR Mar./Apr. 91, p271-284. Lopes, IR Mar./Apr. 91, p220-232. Setting Time Effects on Bentonite Water-Well Computerized design Annulus Seals, Fred L. Ogden and James F. Ruff, IR July/Aug. 91, p534-545. Interactive Computer-Aided Design of Inverted Siphons, Pravi Shrestha and Johannes J. DeV- Climatic changes ries, IR Mar./Apr. 91, p233-254. Accuracy of ~~ Eriemaee pny Concentration time transpiration. argreaves, ov Fractal Concept Used in Time-of-Concentration Dec. 89, p1000-1007. Estimates, Gert Aron, James E. and Climatic data ThomasA . Smith, IR Sept /Oct. 91, p635-641. Evapotranspiration Estimation for Data-Short Conditional probability Environment, SunF . Shih and Ke S. Cheng, IR a ee of Precipitation Droughts by Use of Jan./Feb. 91, p107- 122. Krigei rr rh od, TiaoJ . Chang, IR Nov./Dec. Sensitivity of rege ‘we Evaporation Es- 91, p935-94 timates, K. C. Gan cMahon and I. C. O'Neill, IR May/June 91, p324-335. Cost effectiveness a Two-Stage Pipe Expansions for Centrif- Climatology moe, alter L. Trimmer and John A. FAO-24 ae ~_ transpiration Factors, Fazio IIR Jan./Feb. 91, p91-106. Richard G. William O. Pruitt, IR Sept./Oct. 91, 0758-773. Cost minimization Design “ Irrigation Canals: Integrated Ap- Simulation Models of Ppa of Dry vy ‘ya — — H. Imam,A bdallah S. Bazaraa Days, J. W. Delleur, 5 and and S. Zaghlool, IR Nov./Dec. 91, Kavvas, IR May/June 89, 3344-33 p852- on Clogging Costs Dripper-Clogging Factors in Wastewater Irriga- Problems and Potential of Irrigated tion, Avner Adin and Mollie Sacks, IR Nov./ in Sub-Saharan Africa, Mahmood Dec. 91, p813-826. Mar./Apr. 91, p155-172. Closed conduits Crop moisture index Methods of Measuri Pumpage Through “Data i Balance Model Using Neutron Probe Closed-Conduit Irrigation Systems, L. C. Kjel- ichard H. Cuenca, IR Nov. 88, p644- strom, IR Sept./Oct. 91, p748-757. Coastal plains gibi Drainage-Subirrigation Effect on Water Quality Simulation of Supplemental Irrigation from On- ~b e JF latwoods, D. L. Thomas,A .S hir- Farm Ponds, J. G. Arnold and C. O. Stockle, R. R. Lowrance and “ c. IR May/June 91, p408-424. SmiMthE, TR dea/ Reb. 91, p123-137. Systems Analysis of Tank Irrigation: I. C Staggerin; ~~ Mayya and Rama Prasad, I Colorado Sdeslbune 89, p384-405. Multicriterion Strategic Planning for Improved —— a J II: Agenoatin, Walter E. Crop yield i Timoth Gates, DarrellG . Fontane — of Deficit eens aandt ee — Jose D. Salas, IR Nov./Dec. 91, p914-934. way boen Whvat Yields, M jakamura, IR Mar./Apr. 89, pl ary ie Computer applications SECT‘ AR for Econemically Optimal, Sustained Simple Methods for Predicting Flow to Drains, Ground-Water Yield Planning, R. C. Peralta, Dop an= 4 and R. W. Skaggs, IR Nov./Dec. 91, , Reet and R. Shulstad, IR Jan./Feb. 91, Pp Computer programs Subsurface Microirrigation with Effluent, Gideon Oron, Joel DeMalach, Zafrir Hoffman and a of Least-Squares Land Leveling, N. Rodica Cibotaru, IR Jan./Feb. 91, p25-36. Gebre-Selassie and L. S. Willardson, IR ection 91, p962-966. Crops eee Concept in Channel FAO-24 yy Epvaa peemerintion Factors, letwork Model, Tahir Husain, Hasin U. Khan Richard William O. Pruitt, IR and Suhail M. Khan, IR Jan./Feb. 91, p48-63. et 91*,p 138-773. Pues Water-Order yorein gb yC ompe Subsurface Microi 7 with Effluent, Gideon Brian J. Boman and iggins,I mn, Joel M: Zafrir Hoffman and Shgilune 91, p394-407. Rodica Cibotaru, IR ‘an./ Feb. 91, p25-36. Computer software Culverts Interactive Computer-Aided Design of Inverted Local Scour Downstream of Box-Culvert Outlets, Siphons, Pravi Shresthaan d JohannesJ . DeV- H. Abida and R. D. Townsend, IR May/June ries, IR Mar. Apr. 91, p233-254. 91, p425-440. SUBJECT INDEX Curricula Simple Methods for Predicting Flow to Drains, DSS: Dam Site Selector Expert System for Edu- G—. Ww. coy IR Nov./Dec. 91, cation, Bernard A. Engel and David B. Beasley, IR Sept./Oct. 91, p774-782. Raisec riteria Dam site selection Interactive Computer-Aided Design of Inverted DSS: Dam Site ye Expert System for Edu- Siphons, Pravi Shrestha and Johannes J. DeV- cation, Bernar 7 ehan d David B. Beasley, ries, IR Mar./Apr. 91, p233-254. IR Sept./Oct. OLA n Discharge Damage Alternative Linear Weir , Prabhata K. —— of Soil Moisture Prediction Model for Swamee, Santosh K.P athak, Agarwal Land Managers, J. R. Davis, S. M. = Anwar S. Ansari, IR May/June 91, p311- Cudd P. Laut, J. Goods and P. A. Whigham, IR July/Aug. 91, p476-489. Correction to _—- o. gpa yath Lo w Dams DSS: Dam Site Selector Expert System for Edu- Taher ERSe pt/Oct. 91,p 800808 cation, Bernard A. Engel and David B. Beasley, Design Procedure for Flow Over Side Weirs, Ali IR Sept./Oct. 91, p774-782. by and Roger H. Smith, IR Jan./Feb. 91, Darcy’s law Pp Nonlinear Steady State into Drains, Discharge coefficients Salihu Mustafa and N. A. indadi, IR May/ Alternative Linear Weir Design, Prabhata K. June 89, p358-376. Swamee, Santosh K. Pathak, Agarwal Data extraction = Anwar S. Ansari, IR May/June 91, p311- Evapotranspiration Estimation for Data-Short Environment, Sun F. Shih and Ke S. Cheng, IR Design Procedure for Flow Over SideW Jan./Feb. 91, p107-122. 090" and Roger H. Smith, IR Jan/Feb. aL Decision making Discharge Coefficient of Lateral Diversion ~~ Irrigation Uniformity Relationships for Irrigation Trapezoidal Channel, Hin-Fait Cheong,I R System Management, Albert J. Clemmens, IR July/Aug. 91, p461-475. Sept./Oct. 91, p682-699. Multicriterion Strategic Planning for Improved Discharge measurement Irrigation Delivery. I: Approach, Timothy K. Correction to —_— ~~ Calibrations at Low Gates, Walter E. jeyder, Darrell G. Fontane Disc! and Bahram and Jose D. Salas, IR Nov./Dec. 91, p897-913. Taheri, Scot Oat.3 1,y e08 804, Multicriterion Strategic Planning for Improved Irrigation Delivery. II: Application, Walter E. Distribution patterns a, TTiSmo thy K. Gates, Darrell G. Fontane —— of Wind-Distorted Sprinkier Patterns, Salas,I RN ov./Dec. 91, p914-934. ner, Dov Nir and R. D. von Bernuth, Delivery IRb aerdige. 91, p285-306. Field Study on Irrigation Delivery Performance, Ditches Joel D. Palmer, Albert J. Clemmens and Allen Numerical Mi of Two-Dimensional Tran- R. Dedrick, IR July/Aug. 91, p567-577. sient Flow to Di Saleem Ahmad, Depth ort oahn d B. S. Mathur, 'R Nov./Dec. 91, Critical Depth, Velocity Profile, and Channel R. J. Heggen, IR May/June 91, p442- Drag coefficient Normal-Depth Calculations in Complex Channel Simulation of Wind-Distorted ee Patterns, SLeocpteiso,n s,I R EMdarw.a/rAdp r.D .9 1,S hipr2l2ey0 -23a2n.d Vicente L. IIdRo MSaerg/iAneprr,. 9D1o,v pN2i8r5 -3a0n6d. R.D . von Bernuth, Design Drainage Design of Hydraulic Jump Chambers, Scott F. icultural x 4 Water—How Should it be Korom, Simsek Sarikelle and Andrew L. egulated in California? Stephen K. Hall, Wil- Simon, "IR Mar. /Apr. 90, p143-153. liam R. Johnston and William J. Miller, IR Design of Irrigation Canals: Integrated Ap- Jan./Feb. 89, p3-8. proach, Emad H. Imam, Abdallah S. Bazaraa Drainage of Clay ng eg Aquifer. i: and Ashraf S. Zaghlool, IR Nov./Dec. 91, Hyd ic Assessment E. Grismer and I. p852-869. C. Tod, IR Mar./Apr. 9i, p255-270. Design of Rectangular n-Channel Expansive Drainage of Clay — Artesian Aquifer. II: Transitions, Prabhata K. Swamee and Bharat Technical Analys vee Tod and M. E. Gris- C. Basak, IR Nov./Dec. 91, p827-838. mer, IR Mar/Apr. OL, p271-284. Kriging of Hydraulic Conductivity for Subsurface Drainage-Subi tion Effect on Water Quality wy e ign, J. Gallichand, S. O. Prasher, in Georgia —. . —. _— roughton and D. Marcotte, IR Sept./ mohammadi, R. R. Lowrance an or 91, p667-681. Smith, IR Jan./Feb. 91, p123-137. DRAINAGE 1991 ANNUAL INDEX On the Correspondence Between Brooks-Co: Systems Analysis of Tank Irrigation: Cc and Van Genuchten Models, R. J. Lenhard, J. Staggering, a6. Mayya and Rama Ls aR C. Parker and S. Mishra, IR July/Aug. 89, May/June 89, p384-405. p744-751. Energy losses Overseas Perspectives for Managin es Drainage in California, Emery M. Roe,I Drop Manholes in Supercritical Pipelines, May/June 91, p350-360. TF C. Christodoulou, IR Jan/Feb. 9i, p : Simple Methods for Predicting Flow to Drains, G. Fipps and R. W. Skaggs, IR Nov./Dec. 91, Engineering education p881-896. DSS: Dam Site — Expert System for Edu- Vertical Leakage in Egypt’s Nile Valley: Estima- cation, Bernard A.E ngel and David B. Beasley, tion and Implications, James W. Warner, Tim- IR Sept./Oct. OLA n 782. othy K. Gates, Fatma A. R. Attia and Wadie F. Mankarious, IR July/Aug. 91, p515-533. Estimation Accuracy of Estimated Reference Crop Evapo- Drainage systems transpiration, George H. Hargreaves, IR Nov./ Drop Manholes in Supercritical Pipelines, Dec. 89, p1000-1007. rf C. Christodoulou, IR Jan/Feb. 91, Direct Solution to Surface Irri tion Advance In- Pp verse Problem, Albert J. iemmens, IR July/ Nonlinear Steady State e into Drains, Aug. 91, p578-594. Salihu Mustafa oy N. A. Rafindadi, IR May/ June 89, p358-376 Impoyrsttaenmc e aof Dem and EsNtiummaatino n —in —— Jim Drains Loftis, Ramchand -Oad and Alan y, IR Backwater Curves in Circular Channels, Willi H. May/June 91, p336-349. Hager, IR Mar./Apr. 91, p173-183. Evaporation Nonlinear Steady State e into Drains, Accuracy of oo aoe Crop Evapo- Salihu Mustafa and N. A. Rafindadi, IR May/ transpiration, a . Hargreaves, IR Nov./ June 89, p358-376. Dec. 89, p1000-100 Droughts NOAA Polar-Orbiting Satellite APT Data in ae of Precipitation —, } by Use of Lake Evaporation Estimation, Jian-Nong Xin ging Method, Tiao J. Chang, IR Nov./Dec. and Sun F. Shih, IR July/Aug. 91, p547-557. Th p935-943. Prediction of Class A Pan Evaporation in South- Simulation Models of Sequences of Dry and Wet west Idaho, Clayton L. Hanson, IR Mar./Apr. Days, J. W. Delleur. J. Chang and M. L. 89, p166-171. Kavvas, IR May/J ane 89, p344-357. Sensitivity of ee fay) Evaporation Es- timates, K. C. Gan cMahon and I. C. Earthmoving O’Neill, IR May/June 91, p324-335. Salt Movement Under Level-Basin Irrigation, D. F: Champion,E . G. Kruse, S. R. Olsaendn D . Evapotranspiration C. Kincaid, IR Sept./Oct. 91, p642-655. Accuracy of Estimated Reference Crop Evapo- transpiration, a= . Hargreaves, IR Nov./ Earthwork Dec. 89, p1000-100 —— f Least-Squares Land Leveling, N. Evapotranspiration Estimation for Data-Short re-Selassie and L. S. Willardson, IR Environment, Sun F. Shih and Ke S. Cheng, IR Nov./Dec. 91, p962-966. Jan./Feb. 91, p107-122. Economic analysis FAO-24 Reference Evapotranspiration Factors, Optimal Desi;i gno f Parabolic Canals, G. V. Lo- Richard G. Allen and Wiiliam O. Pruitt, IR ganathan, IR Sept./Oct. 91, p716-735. Sept./Oct. 91, p758-773. Economics "Dat, iicc Bhaalradn ceH. MCoudeenlc a,U siInRg NNoevu.t ro88n, Ppr6o4b4e- Simulation of Supplemental Irrigation from On- FIRa rMma yP/oJnudnse, 9J1., Gp.4 0A8r-n4o2l4d. and C. O. Stockle, P<A. Bowmainn ,M idFw.e sWti:l liLaems soSnism mfornosm aIlnldi noBirs,i aJne aCn. Effluents Kimpel, IR Sept./Oct. 91, p700-715. Subsurface Microirrigation with Effluent, Gideon Expansion Oron, Joel DeMalach, Zafrir Hoffman and Rodica Cibotaru, IR Jan./Feb. 91, p25-36. Practical Two-Stage Pipe Expansions for Centrif- ugal Pumps, Walter L. Trimmer and John A. Egypt Fazio, IR Jan./Feb. 91, p91-106. Irrigation of Small-Level Basins in t, Wadie Expert systems ious, Timothy 2 tes and Mohamed A. -H. Ra dy, IR May/June 91, DSS: Dam Site Selector Expert System for Edu- p361-376. cation, Bernard A. Engel and David B. Beasley, IR Sept./Oct. 91, p774-782. Energy Testing of Soil Moisture ee - Model for Practical bingy 4 Pipe Expansions for Centrif- Army y Land M rs, J. Davis, S. M. ugal Pumps, Walter L. Trimmer and John A. Cuddy, P. Laut, J. Goods i. P. A. Fazio, IR Jan./Feb. 91, p91-106. Whigham, IR July/Aug. 91, p476-4! SUBJECT INDEX GEOGRAPHIC INFORMATION SYSTEMS Farm management Mie asurement ooff Irrigation FFlloowwss Through Irriga- ome g jews Modules, P. K. a|nd a Wesley ‘Wiy Woliecder4 IR Folyi’ 91 A tyanarayana, IR Maviune 90, p444-453. p596-599. ” Farms Flow rates a ae of Low-Discharge Baffle-Sluice Correction to Parshall o< Calibrations at Low Mod K. Mishra, P. Larsen = T. Sa- tyanarayans, IR May/Jun9e0 , p444-453 Taher ERS ept/Oct.9 1, p800-804. I tion of Small-Level Basins in Deicoment of Low-Discharge Baffle-Sluice Mankarious, Timothy K. P. K. Mishra, P. Larsen “< T. Sa- Mohamed A. -H. Rady, IR May/June 91, per IR May/June 90, p444-453 p361-376. i istics of Circular Flume, Zohrab i iohammed Field investigations Yousaf, IR July/Aug. a, p558-566. Field Study on Irrigation Delivery Performance, Methods of M page Through Joel D. Palmer, Albert J. Clemmens and Alien Closed-Conduit Irrigation S: L. C. Kjel- R. Dedrick, IR July/Aug. 91, p567-577. poy my my9 1, p748-757. I esof Small-Level Basins in t, Wadie Simple Methods for Predicting Flow to Drains, Timothy K. tes and G. ~~ and R. W. Skaggs, IR Nov./Dec. 91, H. Rady, IR May/June 91, p88 1-896. p361-376. Flumes Field tests Correction to Yo _ Se gee = at Lmoown d -—~ of Deficit Irrigation and Irrigation Fre- Epon an Wheat Yields, Marshal Eagsha nd Taheri, Ti SSeepptt ,/ Oct.a 1,a 7 a akamura, IR Mar./Apr. 89, p1 72-184. Hydraulic ge < Circular Flume, Zohrab , Saeed Jorat and Mohammed Finite differences Yousaf, IR July/Aug. 91 *p558-566. Numerical Modeling of Two-Dimensional Tran- sient Flow to Ditches, Saleem Ahmad, Deepak Froude number ee. and B. S. Mathur, IR Nov./Dec. 91, Critical Depth, Velocity Profile, and Channel oe R. J. Heggen, IR May/June 91, p442- Flood drainage ~~ Coefficient of Lateral Diversion from Roughness Me for Overland Flow in Sub- Trapezoidal porwr Leneee Cheong, IR catchments, S.Y . Liong, S. a and D. July/Aug. 91, p461-475 K. Brady, IR Mar. /Apr1. 89,p 203-214 Functional analysis Floods Infiltration action from Furrow StreamA i Simulation Models of Sequences of Dry and Wet vance, R. DeTar, IR July/Aug. 49. Days, J. W. Delleur. + a= nMd. L . p722-730. Kavvas, IR Maylene 89, p344-35 Furrow a. Floors Furrow ‘arameters, Thomas J. Trout, Open ge ty Flow Thro Transverse Floor IR Sep/Oct 991,1 r eisesa gt S. Ramam Duc Minh Tran Infiltration Function from Furrow Stream Ad- B. Carballada, IR Mar. /Apr. 89, p248- vance, William R. DeTar, IR July/Aug. 89, p722-730. Florida =} of Furrow Irrigation System Cost — Variables, J. Mohan Reddy and Hora- Evapotranspiration Estimation for Data-Short cio M. ApoiIaR yMaor./,Apr . 91, p201-219. Environment, Sun F. Shih and Ke S. Cheng, IR Jan./Feb. 91, p107-122. Space Solution of Kinematic-Wave Model by Time Iteration, W. W. Wallender and Junji NOAA oe Satellite APT Data in Yokokura, IR Jan/Feb. 91, p140-144. Lake Evaporation Estimation, Jian-Nong Xin and Sun F. Shih, IR July/Aug. 91, p547-557. Gates Flow measurement Centtirona,l izGe.d bag icW .f or R. CaWnaallk eOOr,pp eerar Alternative Linear Weir pale, Fan ag K. May/June 1.M orr 93. Swamee, Santosh K. Pathak, Mahesh Agarwal it Anwar S. Ansari, IR May/June 91, p31l- Dee Con in Channel ietwork Model, Tahir Husain, in U. Khan and Suhail M. Khan, IR Jan./Feb. 91, p48-63. Correction to Parshall Flume Calibrations at Low Disc , Steven J. Wright and Bahram Geographic information systems Taheri, IR Sept./Oct. 91, p800-804. Testing of Soil Moisture Prediction Model for Im rues 8ay = V-Notch or Chimney Weir, Army Land M . J. R. Davis, S. M. a Murthy and D. P. Giri , IR Cuddy, P. Laut, aes 27 and P. A. May/ione 90.p 374-386. Whi , IR July/Aug. 91, p476-489. GEOMETRY 1891 ANNUAL INDEX Method for Determination of Hydraulic Conduc- urrow Geometric Parameters, Thomas J. Trout, tivity in Unsaturated Porous Media, Abolfazl Pu septiOcn 91, p613-634. a and Nicholas Sitar, IR Jan/Feb. 91, Government agencies Overseas Perspectives for Managi Irrigation Hydraulic jump Drainage in California, Emery . Roe, IR Design of tos Jump Chambers, Scott F. May/June 91, p350-360. Korom, Simsek Sarikelle and Andrew L. Simon, IR Mar./Apr. 90, p143-153. Green-Ampt model Precipitation aw and Hydraulic models unoff, J. A.V an Mullem, IR oy ega Centralized bg eo ic for Canal Opera- p944-959. tion, G. yay W. R. Walker, IR Ground water May/June ThM or 93. Irrigation in Midwest: Lessons from Illinois, Jean Hydraulics A. Bowman, F. William Simmons and Brian C. Kimpel, IR Sept./Oct. 91, p700-715. Backwater Curves in Circular ee Willi H. Hager, IR Mar./Apr. 91, pi73-11 83. Optimal Spacing of Tube Wells in Relation to Channel Losses and Lining, Bimal Chandra Direct Solution to Surface Irri tion Advance In- Mal, IR Sept./Oct. 91, p791-799. verse Problem, Albert J. emmens, IR July/ Aug. 91, p578-594. Setting Time _ 7 Bentonite Water-Well Annulus den and James F. Drop Manholes in Supercritical Pipelines, Ruff, IR July/Aug. “ O83 545. wf C. Christodoulou, IR Jan/Feb. 91, Vertical Leakage in Egypt’s Nile Valley: Estima- p37. tion and Implications, James W. Warner, Tim- Hydraulic Characteristics of Circular Flume, othy K. Gates, Fatma A. R. Attia and Wadie F. Zohrab Samani, Saeed Jorat and Mohammed Mankarious, IR July/Aug. 91, p515-533. Yousaf, IR July/Aug. 91, p558-566. Ground-water management Optimal Desi im of Parabolic Canals, G. V. Lo- ganathan, IR Sept./Oct. 91, p716-735. SECTAR for Economically Optimal, Sustained ee, a Planning, R. C. Peralta, Practical Two-S' Pipe Expansions for Centrif- K. Asgharia nd R. Shulstad, IR Jan./Feb. 91, Pumps, Walter L. Trimmer and John A. p5-24 Fazio, IR Jan./Feb. 91, p91-106 Roughness Coefficients for Selected Residue Ma- Ground-water mounding terials, John E. Gilley, Eugene R. Kottwitz and Method for Determination of Hydraulic Conduc- Gary A. Wieman, IR July/Aug. 91, p503-514. tivity in Unsaturated Porous Media, Abolfazl Shamsai and Nicholas Sitar, IR Jan./Feb. 91, Hydrographs p64-78. Response of Muskingum Equation to Step Input, Ground-water quality ohammed Akram Gill, IR July/Aug. 89, p736-738. Nitrate Leaching . Irrigation on Coastal Plain Py W. F. Ritter, R. W. Scarbor~o “— Roughness Coefficients for Selected Residue Ma- andA . E. M. Chirnside, IR July/Aug. 91 terials, John E. Gilley, Eugene R. Kottwitz and o190.302" Gary A. Wieman, IR July/Aug. 91, p503-514. Grouting Hydrologic models Setting Time a i Bentonite Water-Well — ic Balance Model Using Neutron Probe Annulus Seals,F ; den and James F. ichard H. Cuenca, IR Nov. 88, p644- Ruff, IR julyAug. 9911, O 85 545. Head loss Hydrology Design of R -~Channel Expansive Precipitation Distributions and Green-Ampt Transitions, Prabhata K. Swamee and Bharat Runoff, J. A. Van Mullem, IR Nov./Dec. 91, C. Basak, IR Nov./Dec. 91, p827-838. p944-959. Interactive ee (ae ye Design of Inverted Sriiepsh, oInRs , MaPrr.a/vAip rS.h re9s1t, hpa 23a3n-d2 54J.o hannes J. DeV- Rocuagthcnhemsesn tsV,a lSu.e sY . fLoiro ngO,v eSr.l aSnedl valFilnogwa m ina ndS ubD-. K. Brady, IR Mar./Apr. 89, p203-214. Measurement of Irrigation Flows Through Irriga- tion Leen Ian C. Tod, Mark E. Grismer Runoff Curve Numbers for Reclaimed Surface and WesleyW .. Wallender, IR July/Aug. 91, Mines in Pennsylvania, John B. Ritter and p596-599. | ae W. Gardner, IR Sept./Oct. 91, p656- Hydraulic conductivity Simulation of Supplemental Irrigation from On- _ Yew angT e Soils, H. C. Sharma, Farm Ponds, J. G. Arnold and C. O. Stockle, r and Sewa Ram, IR May/June 91, p408-424. Tk Mar./Apr. 91,a e ae Kriging of Hydraulic Conductivi for Subsurface Illinois "Dyr a ign, J. Gallichand, . Prasher, Irrigation in Midwest: Lessons from Illinois, Jean ton and D. Marcotte, iR Sept./ A. Bowman, F. William Simmons and Brian C. Oct. 91, 7-681. Kimpel, IR Sept./Oct. 91, p700-715. SUBJECT INDEX IRRIGATION EFFICIENCY In situ tests Field Stuy on Irrigation Delivery Performance, Method for Determination of Hydraulic Conduc- Joel D. er, Albert J. Clemmens and tivity in Unsaturated Porous Media, Abolfazl R. Dedrick, IRJ uly/Aug. 91, p567-577. rey and Nicholas Sitar, IR Jan./Feb. 91, "Data,R ichard Model Using Neutron Probe p64-78 hard H. Cuenca, IR Nov. 88, p644- Infiltration Igationi n +x Lessons from Illinois, Jean Direct Solution to Surface Irri tion Advance In- William Simmons and Brian C. verse Problem, Albert J. iemmens, IR July/ Kimpel IR "athy- 91, p700-715. Aug. 91, p578-594. Irrigation Uniformity Relationships for Irrigation Infiltration Function from Furrow Stream Ad- System Management, Albert J. Clemmens, IR vance, William R. DeTar, IR July/Aug. 89, Sept./Oct. 91, p682-699. p722-730. Methods of Measuring Pumpage Through Precipitation Distributions and Green-Ampt Closed-Conduit Irrigation enn L. C. Kjel- unoff, J. A. Van Mullem, IR Nov./Dec. 91, strom, IR Sept./Oct. 91, p748-757. p944-959. Nitrate Leaching Under Irrigation on Coastal Simple R ession Procedure for Power Func- Plain Soil, W. F. Ritter, R. W. Scarbo tion, J. . Valiantzas, IR Sept./Oct. 91, p784- and A. E. M. Chirnside, IR July/Aug. 91, 790. 5490-302. Space Solution of Kinematic-Wave Model by Overseas Perspectives for Managi itotie Time Iteration, W. W. Wallender and Junji Drainage in ———_ Emery M. Roe,I Yokokura, IR Jan./Feb. 91, p140-144 mers 91, p350-360 Infiltration rate Practical Two-S' Pipe Expansions for Centrif- Infiltration Function from Furrow Stream Ad- ugal Pumps, Walter L. Trimmer and John A. vance, William R. DeTar, IR July/Aug. 89, Fazio, IR Jan./Feb. 91, p91-106. p722-730. ny and Potential of Irrigated nm Sub-Saharan Africa, Mahmood Inflow Mar/Apr. 91, p1 55-172. Response of Muskingum Equation to Step Input, - Movement ay Level-Basin Irrigation, D. ohammed Akram Gill, IR July/Aug. 89, F. Champion, E. G. Kruse,S .R . Olsen and D. p736-738. C. Kincaid, TR Sent/ Oet 91, p642-655. Infrared analysis -——y oef e go Irrigation from On- ‘arm Pon > fae and C. O. Stockle, NOAA ceo ay I Satellite APT Data in IRk M ayitune di.p 408-424 Lake Evaporation t imation, Jian-Nong Xin and Sun F. Shih, IR July/Aug. 91, p547-557. Irrigation efficiency Calculation of Distribution and. ow for Nonuniform i tion, A. W. Warrick, E. Hart Responseo f Muskingum Equation to Step Input, and M. Yitayew, IR July/Aug. 89, pp6674 -686. hammed Akram Gill, IR July/Aug. 89, p736-738. Destopanens of eee er Modules, P. K. Mishra,P . Interaational development tyanarayana, IR May/June 90, p444-453 Overseas Perspectives for Managing Irrigation Im —%; of Demand Estimation in Irigation- Drainage in California, Emery M. Roe, IR . Jo yo Jim ee a 91, p350-360. Lofts. d and Alan ly, IR May/Jun~e ~e r Irrigation Irrigation of Small-Level Basins in Calculation of Distribution and Efficiency for en, Timothy K. Nonuniform Irrigation, A. W. Warrick, E. Hart Mohamed A. -H. Rady, IR May/June 91, and M. Yitayew, IR July/Aug. 89, p674-686. p361-376. Development of Low-Discharge —_—e? Measurement of Irrigation Flows Through Irriga- Modules, P. K. Mishra, P. Larsena nd T. Sa- tion Lh ag Ian C. Tod, Mark E. ee tyanarayana, IR May/June 90, maae-453. and WesleyW .. Wallender, IR July/Aug. 91, yee of Clay ey Aquifer. I: p596-599. Hydrol one Assessment E. Grismer and I. Multicriterion Strategic Planning for Improved C. Tod, IR Mar./Apr. 9i, p255-270. Irrigation Delivery. I: Aone, hy K. Drainage of Clay Overlying Artesian Aaate. II: Gates, Walter E. ieyder, Darre! ontane Technical Analysis, I. C. Tod and M. E. Gris- and Jose D. Salas, IR Nov./Dec. 91,S t mer, IR Mar./Apr. 91, p271-284. Multicriterion Strategic Planning for Improved a men rg ng Concept in Channel —— ——— il: Application, Walter E. Network Model, Tahir Husain, Hasin U. Khan ~_—. Timothy K. Gates, Darrell G. Fontane and SuhailM . Khan, IR Jan./Feb. 91, p48-63. Jose D. Salas, IR Nov./Dec. 91, p914-934. Effects of Deficit Irrigation and Ir“ri po Fre- Systems me of Tank Irrigation: I. C uency on Wheat Yields, Marshall ish and Staggering, S. G.M ayya and Rama Prasad, I rian Nakamura, IR Mar. /Apr. 89, p1 72-184. ennain e8 9, p384-405. FAO-24 Reference Evapotranspiration Factors, er Management for —e Rice I tion, Richard G. Allen and William O. Pruitt, IR i Z. Siddeek, Theo A. Dillaha an 4G V. Sept./Oct. 91, p758-773. Loganathan, IR Aug. 88, p407-423. IRRIGATION ENGINEERING 1991 ANNUAL INDEX Irrigation engineering Iteration Improved Inverted V-Notch or ne ik Space Solution of Kinematic-Wave Model by Keshava Murthy and D. P. Giri Time Iteration, . Wallender and Junji May/Jun9e0 , p374-386. Yokokura, IR Jan./Feb. 91, p140-144. Simple Aer Procedure for Power Func- Kinematic wave theory de Valiantzas, IR Sept./Oct. 91, p784- Fractal Concept Used in Time-of-Concentration Estimates, Gert Aron, James E. Ball and Irrigation practices Thomas A. Smith, IR Sept./Oct. 91, p635-641. Direct Solution to Surface Irri tion Advance In- Kinematics vAeurgs.e 91P,r opb5l7e8m-,5 94A.l bert J. iemmens, IR July/ Rocuagthcnhemsesn tsV,a lSu.e sY . fLoiro ngO,v eSr.l aSnedl valFilnogwa m ina ndSu bD-. a in Midwest: Lessons from Illinois, Jean K. Brady, IR Mar./Apr.8 9, p203-214. A. Bowman, F. William Simmons and Brian C. Kimpel, IR Sept./Oct. 91, p700-715. Knowledge-based systems I tion of Small-Level Basins in , Wadie DSS: Dam Site Selector Expert System for Edu- Mankarious, Timothy K. tes and cation, Bernard A. Engel and David B. Beasley, Mohamed A. -H. Rady, IR May/June 91, IR Sept./Oct. 91, p774-782. p361-376. Laboratory tests Nitrate Lents _ nCo n Coastal Hydraulic —— gy of Circular Flume, Plain ~~ TF. F. Ritter, Ww. TT hrab Samani, Jorat and Mohammed and A. ey IR July/Aug. Yousaf, IR Telus< T p558-566. 5490-302" Local Scour Downstream of Box-Culvert Outlets, Simulation of Supplemental Irrigation from On- H. Abida and R. D. Townsend, IR May/June Farm Ponds, J. G. Arnold and C. O. Stockle, 91, p425-440. IR May/June 91, p408-424. Lakes Irrigation programs NOAA tention tary BS atellite APT Data in Problems and Potential of Irrigated Agieeness Lake Evaporation Estimation, Jian-Ni Xin in Sub-Saharan Africa, Mahmood , IR and Sun F.S hih, IR July/Aug. 91, p547-557 Mar./Apr. 91, p155-172. Land reclamation Irrigation scheduling Runoff Curve Numbers for Reclaimed Surface Centralized Scheduling ic for Canal Opera- Mines in Pennsylvania, John B. Ritter and tion, G. P. M an W. R. Walker, IR a W. Gardner, IR Sept./Oct. 91, p656- May/June 91, p377-393. Effects of Deficit Irrigation and Irrigation Fre- Fenw m Be Wheat Yields, Marshall Engha nd Laplace transform akamura, IR Mar./Apr. 89, p1 72-184. i of Muskingum Equation to Step Input, i mt oy boon nb g RDSel ivery Performance, nom Akram Gill, IR July/Aug. 89, Ciemmens and Allen p " RiD edrick, IR July/Aug. 91, p567-577. Laterals Projectwide Water-Order Schedulingbb yo e ng Discharge Coefficient of Lateral Diversion from er, Brian J. Boman and Charles Higgins,I Trapezoidal oa Hin-Fatt Cheong, IR May/June 91, p394-407. July/Aug. 91, p461-475 Irrigation systems Leaching Design of ee og: Integrated Ap- Nitrate Leaching Under Irrigation on Coastal proach, Emad H. Imam,A l S. Bazaraa mm gh il, W. F. Ritter, R. W. Scarboro and Ashraf S. Zaghlool, IR Nov./Dec. 91, and A. E. M. Chirnside, IR July/Aug. 91, p852-869. p490-502. Development of Low-Discharge Baffle-Sluice Salt Movement Under Level-Basin Irrigation, D. Modules, P. K. Mishra, P. Larsen and T. Sa- pion, E. G. Kruse, S. R. Olsen and D. tyanarayana, IR May/June 90, p444-453. €. Kincaid, IR Sept./Oct. 91, p642-655. Im sy of Demand Estimation in ah tin em Management, Numan Mi Jim Leakage Ramchand Oad and Alan Vertical Leakage in Egypt’s Nile Valley: Estima- Mangum 91, 7336-349 tion and Implications, James W. Warner, Tim- Subsurface Microi tion with Effluent, Gideon othy K. Gates, Fatma A. R. Attia and Wadie F. Oron, Joel DeMalach, Zafrir Hoffman and Mankarious, IR July/Aug. 91, p515-533. Rodica Cibotaru, IR Jan/Feb. 91, p25-36. Least squares method Irrigation water Practical <- Grading Based on Least Squares, J. Scaloppi and Lyman S. Willardson, — [= eeme d Relationships for Irrigation IR May 86, p98-109. Management, Albert J. Clemmens, IR hey /Oct. 91, p682-699 Leveling Projectwide Water-Order Scheduling by Comput- Application cf Least-Squares Land Leveling, N. er, Brian J. Boman and Charles Higgins, IR A. Gebre-Selassie and L. S. Willardson, IR May/June 91, p394-407. Nov./Dec. 91, p962-966. SUBJECT INDEX a 7 Grading Based on Least Squares. Modeling Edmar J. Scaloppi and Lyman S. Willardson, Calculation of —— yy ot Efficiency for IR May 86, p98-109. Nonuniform Warrick, E. Hart and M. Yitayew. J jam. 89, p674-686. Linear programming 7v ay! of Tank Irrigation: I. oR Models G. Mayya and Rama Prasad,I Dynamic-Node-Num in Gee Meio 89, 7384-405. —_ ——. Tahir U. Khan M. Khan, IR Jan/Feb. 91, p48-63. Linearity Reem Geometric Parameters, Thomas J. Trout, Alternative Linear Weir Design, Prabhata K. IR Sept./Oct. 91, p613-634. Swamee, Santosh K. Pathak, Mahesh Agarwal = Anwar S. Ansari, IR May/June 91, p311- Space Solution of -__ooe Model by Time Iteration, W. Wallender and Junji Yokokura, IR Jan Fee.9 1, p140-144. Management Momentum transfer Irrigation Uniformity Relationships for Irrigation Discharge Coefficient of Lateral Diversion ~- System Management, oo J. Clemmens, IR Trapezoidal ow Hin-Fatt Cheong,I Sept./Oct. 91, p682-699 July/Aug. 91, p461-475 Overseas Perspectives for Managi Irrigation Drainage in California, Emery . Roe, Multiple purpose structures May/June 91, p350-360. Importance of Demand Estimation in Irrigation- ent, Numan Mi Jim Manholes Loftis, Ramchand Oad and Alan ly, IR Drop Manholes in Supercritical Pipelines, May/June 91, p336-349. George C. Christodoulou, IR Jan/Feb. 91, p37-47. Nile River Valley Vertical in Egypt’s Nile Valley: Estima- Mathematical models tion and Implications, James W. Warner, Tim- Drainage of Clay Overlying Artesian Aquifer. II: othy K. Gates, Fatma A. R. Attia and Wadie F. Technical Analysis,I .C . Tod and M. E. Gris- Mankarious, IR July/Aug. 91, p515-533. mer, IR Mar./Apr. 91, p271-284. Nitrates Optimal Spacing of Tube Wells in Relation to Channel Losses and Lini Bimal Chandra Drainage-Subirrigation — on Water Quality Mal, IR Sept./Oct. 91, p791-799. in Georgia a 2 . L. Thomas, A. Shir- mohammadi, R. R. Lowrance and M. C. Mathematics Smith, IR Jan./Feb. 91, p123-137. Prediction of Class A Pan Evaporation in South- Nitrate Leaching ‘s Irrigation on Coastal west Idaho, Clayton L. Hanson, IR Mar./Apr. Plain -_ Ww. Ritter, R. W. Scarbo 89, p166-171. and A. E. M. vonneide IR July/Aug. 91, p490-502 Measurement Nitrogen Hydraulic Characteristics of Circular Flume, Zohrab Samani, Saeed Jorat and Mohammed Sediment-Related Transport of Nutrients from Yousaf, IR July/Aug. 91, p558-566. Southwestern Watersheds, S. M. Bolton, T. J. hv a and R. A. Cole, IR Sept./Oct. 91, p736- Measuring instruments Hydraulic eng oe of Circular Flume, Nonlinear analysis Zohrab Samani, Saeed Jorat and Mohammed Nonlinear Steady State into Drains, Yousaf, IR July/Aug. 91, = Salihu Mustafa and N. A. indadi, IR May/ Methods of Measuri mpage Through June 89, p358-376. Closed-Conduit ae Souee. L. C. Kjel- strom, IR Sept./Oct. 91, p748-757. Notches Improved Inverted tyme - [= Weir, Microcomputers K. Keshava Murthy P. iridhar, IK ~e-= of Least-Squares Land Leveling, N. May/Jun9e0 , p374- 86. Gebre-Selassie and L. S. Willardson, IR Now Dee 91, p962-966. Numerical analysis Normal-Depth Calculations in Com: Channel Mines Sections, Edward D. Shirley and Vicente L. Runoff Curve Numbers for Reclaimed Surface Lopes, IR Mar./Apr. 91, p220-232. Mines in Pennsylvania, John B. Ritter and | gue W. Gardner, IR Sept./Oct. 91, p656- Numerical models Design Procedure for Flow Over Side Weirs, Ali aes and Roger H. Smith, IR Jan./Feb. 91, Model verification p79-90. Testing oof m A arorsnen ve _—— for Numerical Modeli: of Two-Dimensional Tran- Army PS Davis, S. M. sient Flow to Ditc leem Ahmad, Deepak Ciday, 7. fe Goodspeeda nd P. A. — a B. S. Mathur, IR Nov./Dec. 91, Whigham, IR July/Aug. 91, p476-489. p : NUMERICAL MODELS 1991 ANNUAL INDEX Simple Methods forS g mem Flow to Drains, Simulation of Supplemental Irrigation from On- G. Fi and R.W . Skaggs, IR Nov./Dec. 91, Farm Ponds, J. G. Arnold and C. O. Stockle, aIR a 91, p408-424. Space Solution of ~__ooO- Model by Time Iteration, W. Wallender and Junji Yokokura, Th Jan/Feb. 91, p140-144. ue se ofb eg y = ay Equation to Step Input, 1 ne Gill, IR July/Aug. 89, Nutrients Pe Sediment-Related Transport of Nutrients from Overland flow Southwestern Watersheds, S. M. Bolton, T. J. a and R. A. Cole, IR Sept./Oct. 91, p736- Fractal Concept Used in Time-of-Concentration Estimates, Gert Aron, James E. and Thomas A. Smith, IR Sept. /Oct. 91, p635-641. Ohio Parabolic bodies Investigaatgio Mne tohfo dP,r ecTiipaiot atJi.o nC hDaron g,I+ R Nboyv .U/sDee c.o f Optgiamnaatlh anD,es i;IiR gSneo pft ./POacrta.b ol9i1c, pC7a1n6a-l7s3,5 . G. V. Lo- 91, p935-943. Parameters Open channel flow Simple Ri ession Procedure for Power Func- Critical oe. Velocity Profile, and Channel tion, J. . Valiantzas, IR Sept./Oct. 91, p784- a R.J . Heggen, IR May/Juae 91, p442- 790. Normal-Depth Calculations in Complex Channel Particle size Sections, Edward D. Shirley and Vicente L. Dripper-Clogging Factors in Wastewater Irriga- Lopes, IR Mar./Apr. 91, p220-232. tion, Avner Adin and Mollie Sacks, IR Nov./ Open Channel Flow Thro Transverse Floor Dec. 91, p813-826. Outlets, A. S. Ramamurthy, Duc Minh Tran =e L. B. Carballada, IR Mar. /Apr. 89, p248- Peak flow Precipitation Distributions and Green-Ampt Runoff, J. A. Van Mullem, IR Nov./Dec. 9i, Open channels p944-959. Dynamic-Node-Numbering Concept in Channel Pennsylvania Network Model, Tahir Husain, Hasin U. Khan and SuhailM . Khan, IR Jan./Feb. 91, p48-63. Runoff Curve Numbers for Reclaimed Surface Mines in Pennsylvania, John B. Ritter and Hydraulic mang mo 5 of Circular Flume, aa W. Gardner, IR Sept./Oct. 91, p656- Zohrab i, Saeed Jorat and Mohammed Yousaf, IR Tuly/Aug. 91, p558-566. Percolation Openings Drainage of Clay eng yg Aquifer. I Discharge Coefficient of Lateral Diversion oo Hydrol ficA ssessm Grismer and L Trapezoidal mel, Hin-Fatt Cheong,I C. Tod, IR Mar./Apr. 9i, p255-270. July/Aug. 91, p461-475. Drainage of Clay Overlying py Aquifer. II: Operation Technical Analysis, I.C . Tod and M. E. Gris- mer, IR Mar len. 91, p271-284. ae ie a for Canal Opera- tion, G. . R. Walker, IR Method for Determination of Hydraulic Conduc- Mav Sones9 1,i e oe tivity in Unsaturated Porous Media, Abolfazl ee and Nicholas Sitar, IR Jan./Feb. 91, Optimal control methods Design of R “Channel Expansive Salt Movement Under Levei-Basin Irrigation, D. eo hey Prabhata Swamee and Bharat F. Champion, E. G. Kruse, S. R. Olsen and D. C. Basak, IR Nov./Dec. 91, p827-838. C. Kincaid, IR Sept./Oct. 91, p642-655. Optimal design Performance evaluation - Optimal Desi;i gno f Parabolic Canals, G. V. Lo- Field Study on Irrigation Delivery Performance, ganathan, IR Sept./Oct. 91, p716-735. Joel D. Palmer, Albert J. Clemmens and Allen Sensitivity of toa! Irrigation System Cost and R. Dedrick, IR July/Aug. 91, p567-577. Design Variables, J.M ohan Reddy and Hora- Importance of Demand Estimation in Irrigation- cio M.A polayo, IR Mar./Apr. 91, p201-219. ystem Management, Numan —_ > Loftis, Ramchand Oad and Alan ly, I Optimization May/June 91, p336-349. Optimal oes of Tube Wells in Relation to Permeability Channel Losses and —,! Bimal Chandra Mal, IR Sept/Oct. 91, p791-799. x pee e in 45> Soils, H . C. Sharma, an, P. N. al and Sewa Ram, Optimization models Tkf acies 91, p184-2 SECTAR for Economically Sag ay Sustained On the Correspondence Between Brooks-Co Ground-Water Log Planni Peralta and Van Genuchten Models, R. J. Lenhard, J. 2 a=nd R. Shulstad, iej an eed. 91, C. Parker and S. Mishra, IR July/Aug. 89, p5-24. p744-751.

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