Discussion of Hydrogeologic Data to Develop a Numerical Ground-Water-Flow Model of Mt.Desert Island, Maine

2006·1.4 MB·English

by  Neilsen, M.G.

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USGS
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Prepared in cooperation with the National Park Service
Discussion of Hydrogeologic Data to Develop a
Numerical Ground-Water-Flow Model of
Mt. Desert Island, Maine
Administrative Report
NATIONAL PARK SERVICE
WATER RESOURCES
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U.S. Geological Survey RESOURCE ROOM PROPERTY

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Prepared in cooperation with the National Park Service
Discussion of Hydrogeologic Data to Develop a
Numerical Ground-Water-Flow Model of
Mt. Desert Island, Maine
By Martha G. Nielsen
Administrative Report
NATIONAL PARK SERVICE
WATER RESOURCES DIVISION
FORTCOLLINS, COLORADO
RESOURCE ROOM PROPERTY
U.S. Departmentofthe Interior
U.S. Geological Survey
Digitized by the Internet Archive
in 2012 with funding from
LYRASIS Members and Sloan Foundation
http://archive.org/details/discussionofhydrOOneil
U.S. Department of the Interior
DIRK KEMPTHORNE, Secretary
U.S. Geological Survey
Mark D. Meyers, Director
U.S. Geological Survey, Reston, Virginia 2006
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Contents
Abstract 1
Introduction 1
Conceptual Model ofthe Ground-Water-Flow System 2
Discussion of Data Needed to Develop a Numerical Ground-Water-Flow Model 5
Discretization ofthe Hydrologic System 5
Boundary Conditions 9
Aquifer-System Properties 11
Stresses 13
Calibration Targets 14
Need for Additional Data 14
References 15
Figures
1-3. Maps showing:
1. Mt. Desert Island, Maine, showing location of wetlands and Acadia National Park 3
2. Suggestions for model area, boundary conditions, and locations of drain cells for possible
ground-water-flow model of Mt. Desert Island, Maine 6
3. Possible distribution of hydraulic conductivity zones in bedrock layers of model
(layers 2 and 3) 7
4. Diagram showing possible layering scheme for ground-water-flow model for Mt. Desert Island,
Maine 8
5. Map showing possible distribution of hydraulic conductivity zones in surficial materials (layer 1) 12
Tables
1. Hydraulic conductivities that could be used for drain conductances 10
2. Initial hydraulic conductivityvaluesthat could be used in a ground-water-flow model 13
3. Estimated recharge ratesfor surficial geologic units 14
in

Conversion Factors
SI to Inch/Pound
Multiply By To obtain
Length
centimeter(cm) 0.3937 inch(in.)
meter(m) 3.281 foot(ft)
kilometer(km) .6214 mile (mi)
Area
hectare (ha) 2.471 acre
square km (km2 0.3861 square mi (mi2
) )
Hydraulicconductivity
meterperday (m/d) 3.281 footperday (ft/d)
Vertical coordinate information is referenced tothe North American Vertical Datum of 1988 (NAVD 88).
Horizontal coordinate information is referenced tothe North American Datum of1983 (NAD 83).
Altitude, as used inthis report, refersto distance abovethevertical datum.
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