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Map Layer Info

Ground Water Climate Response Network

What this map layer shows:

The locations of over 300 wells that are part of the Ground Water Climate Response Network.
opens the U.S. Geological Survey home page
Background Information
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The U.S. Geological Survey (USGS) Water Resources Program, in cooperation with hundreds of Federal, State, and local agencies, collects nationally-consistent information about the Nation's ground water resources and helps define and manage those resources. The USGS maintains a network of wells to monitor the effects of droughts and other climate variability on ground water levels. The Ground Water Climate Response Network consists of a national network of about 140 wells monitored as part of the Ground Water Resources Program, supplemented by more than 200 wells monitored as part of the Cooperative Water Program that meet the same network criteria, which are:
  • Open to a single, known hydrogeologic unit

  • Known well construction that allows good water-level measurements

  • Located in unconfined aquifers or near-surface confined aquifers that respond to climatic fluctuations

  • Minimally affected by pumpage and likely to remain so

  • Essentially unaffected by irrigation, canals, and other potential sources of artificial recharge

  • Long-term accessibility

  • Well has never gone dry (not susceptible to going dry)
More than 200 of the network wells are equipped with telemetry that transmits a reading of water level to an office by satellite or telephone. The data typically are updated every 4 hours. Real-time hydrologic data are provisional and have not been reviewed or edited. Each ground water record is considered provisional until the data are published, which usually occurs within 6 months of the end of the water year (September 30).

The Ground Water Climate Response Network map layer shows the locations of more than 300 wells in the United States and Puerto Rico. This map layer was compiled by the USGS. Descriptive information includes the station identification number, its location, and an indication of how frequently data are collected from the well. Links are provided to detailed information from each well. Additional information about USGS water activities, including data from additional wells, is available from the Water Resources Program home page.


Map Maker Sample
Ground Water Climate Response Network
Ground Water