USGS - science for a changing world

USGS Groundwater Information

Groundwater Resources Program

*  Home *  Regional GW Studies *  GW & Environment * Methods & Modeling *  Publications *  Data & Information [an error occurred while processing this directive] *  Intranet
 [Photo: Ground water flowing out of well.]

New & Noteworthy

* 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

Past listings...

USGS Groundwater Watch

USGS maintains a network of active wells to provide basic statistics about groundwater levels.

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

Other Water Topics

*  Water Resources

*  Groundwater

*  Surface Water

*  Water Quality

*  Water Use

USGS in Your State

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.

GWRP > Regional Groundwater Availability Studies Geosptial Data > Groundwater Recharge Data

Available Groundwater Recharge Data

Understanding the components of a water budget is a prerequisite for assessing the sustainability of an aquifer system. Groundwater recharge is an important part of the water budget, and a variety of methods are available to estimate it at regional scales. The Soil-Water-Balance (SWB) code was developed by the USGS to estimate recharge using readily available public data for air temperature, precipitation, soil properties, land-surface elevation, and land use/land cover. Other water balance estimation methods include the Farm Process, SOil-WATer balance (SOWAT), and Basin Characterization Model (BCM). In other cases, recharge is simply based on a fraction of precipitation. Recharge results from these methods provide an initial set of values that are typically adjusted as part of the final development of a hydrologic model that will be used to assess the availability of groundwater.

Geospatial data for principal aquifers shown in green on the map can be acquired by clicking on the aquifer of interest. Data are available in several formats, including non-proprietary formats when possible. Because recharge rates vary through time, values are provided for multiple time periods for each principal aquifer. For some aquifers, additional water-budget terms also are provided.

 [Map: Locations of GWRP groundwater availability studies.]

Map of U.S. Geological Survey (USGS) Groundwater Resources Program regional scale groundwater study areas. Explanation indicates the availability of geospatial data for that study.

Aquifers with Available Data

Aquifers with Data in Development

  • Floridan
  • Glacial
  • Hawaiian Volcanics
  • Lake Michigan Basin
  • North Atlantic Coastal Plain
  • Northwest Volcanics
  • Ozark Plateau
  • Williston and Powder River Basins

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Contact the Groundwater Resources Program
Page Last Modified: Tuesday, 03-Jan-2017 20:45:13 EST