USGS Groundwater Information
Groundwater Resources Program
New & Noteworthy
Press Release: High Plains Aquifer Groundwater Levels Continue to Decline
USGS Groundwater Watch
USGS maintains a network of active wells to provide basic statistics about groundwater levels.
Other Water Topics
USGS in Your State
USGS Water Science Centers are located in each state.
Water-Table Fluctuation (WTF) Method
Recent Case Studies of Water-Table Fluctuation Method
Table 1. Recent studies illustrate the application of this method -- click site name for details:
NA, not available