USGS Groundwater Information
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Groundwater and Drought
Drought Recovery Rate Sample Figure
Sample graphs demonstrating time lag among precipitation, streamflow, and groundwater levels as hydrologic conditions move into and out of drought. Graph shows cumulative monthly departures of streamflow, groundwater, and precipitation for sites near Paw Creek, Mecklenburg County, North Carolina, during (A) 1998-2003 water years and (B) 2002-2003 water years. From USGS SIR 2005-5053 by J.C. Weaver, 2005.