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[Photo: Groundwater flowing out of well.]

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* Press Release: Study Explores Groundwater and Geothermal Energy in Drought-Stricken Eastern Oregon and Neighboring States

* Technical Announcement: USGS Issues Revised Framework for Hydrogeology of Floridan Aquifer

* Press Release: High Plains Aquifer Groundwater Levels Continue to Decline

* Regional Groundwater Availability Study Geospatial Data

* Press Release: USGS Assesses Current Groundwater-Quality Conditions in the Williston Basin Oil Production Area

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[Image: USGS active water level wells location map.]

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USGS Water Science Centers are located in each state.

[Map: There is a USGS Water Science Center office in each State.] Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii and Pacific Islands New York Vermont New Hampshire Maine Massachusetts South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Software and Models, Methods for Estimating Groundwater Recharge In Humid Regions

Sorted by Category

Method Category Program Author Date Title
GW Models Groundwater SUTRA Voss, C. I., and Provost, A.M., 2002 SUTRA, A model for saturated-unsaturated variable-density ground-water flow with solute or energy transport
GW Models Groundwater MODFE Torak, L.J. 1993 A MODular Finite-Element model (MODFE) for areal and axisymmetric ground-water-flow problems
GW Models Groundwater MODFLOW Harbaugh, A.W. 2005 A modular three-dimensional finite-difference ground-water flow model
Regression Regionalization GLSNet Tasker, G.D., and Stedinger, J.R., 1989, An operational GLS model for hydrologic regression: Journal of Hydrology, v. 111, p. 361-375. 1989 Tasker, G.D., and Stedinger, J.R., 1989, An operational GLS model for hydrologic regression: Journal of Hydrology, v. 111, p. 361-375.
Base Flow Streamflow HYSEP Sloto, R.A., and Crouse, M.Y. 1996 HYSEP: a computer program for streamflow hydrograph separation and analysis
Base Flow Streamflow BFI Wahl, K.L. and Wahl, T.L. 1988 A computer program for determining an index to base flow
Base Flow Streamflow PART Rutledge, A.T. 1993 Computer programs for describing the recession of ground-water discharge and for estimating mean ground-water recharge and discharge from streamflow records
Base Flow Streamflow WHAT K.J. Lim, B.A. Engel, Z. Tang, J. Choi, K. Kim, S. Muthukrishnan, and D. Tripathy 2005 Web GIS-based Hydrograph Analysis Tool, WHAT
Watershed Models Streamflow PRMS Leavesley, G.H., Lichty, R.W., Troutman, B.M., and Saindon, L.G., 1983, Precipitation-Runoff Modeling System: User's Manual: U.S. Geological Survey Water-Resources Investigations 83-4238, 207 p. 2000 Leavesley, G.H., Lichty, R.W., Troutman, B.M., and Saindon, L.G., 1983, Precipitation-Runoff Modeling System: User's Manual: U.S. Geological Survey Water-Resources Investigations 83-4238, 207 p.
Recession-Curve Displacement Streamflow RORA Rutledge, A.T. 1998 Computer programs for describing the recession of ground-water discharge and for estimating mean ground-water recharge and discharge from streamflow data – update
Recession-Curve Displacement Streamflow PULSE Rutledge, A.T. 2002 User guide for the PULSE program:
Watershed Models Streamflow HSPF Bicknell, B.R., Imhoff, J.C., Kittle, J.L., Jr., Donigian, A.S., Jr., and Johanson, R.C. 1997 Hydrological Simulation Program--Fortran, User's manual for version 11
Watershed Models Streamflow SWAT Neitsch, S.L., Arnold, J.G., Kiniry, J.R., Williams, J.R. 2005 Soil and water assessment tool -- theoretical development
UZ Models Unsaturated Zone VS2D Hsieh, P.A., Wingle, William, and Healy, R.W. 2000 VS2DI--A graphical software package for simulating fluid flow and solute or energy transport in variably saturated porous media
HELP3 Water Budget HELP Schroeder, P.R., Aziz, N.M., Lloyd, C.M., and Zappi, P.A. 1994 The hydrologic evaluation of landfill performance (HELP) model, user’s guide for version 3
New Jersey Water Budget DGS99-2 Charles, E.G. 1993 A method for evaluating ground-water recharge areas in New Jersey

 

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