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Virginia Water Science Center

Clarke County Web site.

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Additional Water-Resources Data for Clarke County, Virginia

In addition to the water-monitoring networks for Clarke County, Va., data are being collected as part of the hydrogeologic assessment of the water resources.

 Collection of chlorofluorocarbon dating sample Age dating (Opens page in new window. )-- Various dating techniques were used to determine the apparent age of ground water discharging from 15 springs in the County.  Ground water recharged within the past 60 years can be dated using chlorofluorocarbons (CFCs, Freon), sulfur hexafluoride (SF6), and tritium (3H)/helium (3He).

 
 Carbonate rock outcrop Geology (Opens page in new window. ) -- Knowledge of the geology is a critical component in understanding the ground-water flow systems in the County.  Rock type and geologic structure act as controls on ground-water flow and occurrence of springs.

 
 Seismic land streamer Geophysics (Opens page in new window. ) -- Various borehole and surface geophysical methods are being used to identify the nature of fracturing, karst features, depth to bedrock, and ground-water/surface-water interactions.

 
 GIS layer GIS (Opens page in new window. ) --  Geographic information system (GIS) data are being used to evaluate the relations between the hydrogeology, geologic structures, and topography.

 
 Clarke County farm scene Photo Gallery (Opens page in new window. ) -- Digital photographs are being used to document well and spring locations, hydrogeologic settings, and geologic features.

 
Clarke County spring Water quality (Opens page in new window. ) -- Various types of water-quality data collected by the U.S. Geological Survey are available for springs, streams, and wells in the County.

 
 Spring house in Clarke County Water use (Opens page in new window. ) -- The U.S. Geological Survey compiles and publishes water-use data for the United States every 5 years.  Water-use data are available for other counties in Virginia.

 

 

Current Water Conditions for Clarke Co.

Shaded relief map of Clarke County, Va.The USGS provides current ("real-time") stream stage and streamflow, water-quality, and ground-water levels for 4 sites in Clarke County, Va.

Current Water Conditions for the Shenandoah Valley

Shaded relief map of the Shenandoah Valley of Virginia and West VirginiaThe USGS and Virginia Department of Environmental Quality provide current ("real-time") stream stage and streamflow, water-quality, and ground-water levels for 35 sites in the Shenandoah Valley of Virginia and West Virginia.

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URL: http://va.water.usgs.gov/clarke/add.htm
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Page Last Modified: 28-Feb-2008 14:00:00 EST