ground-water in virginia
DESCRIPTION
Ground-Water in Virginia. George Harlow U.S. Geological Survey 1730 E. Parham Rd Richmond, VA 23228 804-261-2630. The Hydrologic Cycle. 34. Ground-Water Use in the United States. Ground-Water-Flow System ( Natural Conditions ). Direction and Rate of Ground-Water Movement. - PowerPoint PPT PresentationTRANSCRIPT
Ground-Water in Virginia
George HarlowU.S. Geological Survey
1730 E. Parham RdRichmond, VA 23228
804-261-2630
The Hydrologic Cycle
Ground-Water Use in the United States
34
Ground-Water-Flow System (Natural Conditions)
Direction and Rate of Ground-Water Movement
Ground-water pumpage terms
Aquifer Material
Sand
Shell material
Crystallinerock
Sedimentaryrock
Carbonates
Coal
Wells
Physiographic Provinces of Virginia
Coastal Plain
Piedmont
Mesozoic Lowlands
Blue Ridge
Valley and Ridge
Appalachian Plateau
Coastal Plain
Piedmont
Mesozoic Lowlands
Blue Ridge
Valley and Ridge
Appalachian Plateau
Hydrogeology of the Appalachian Plateau
NOT TO SCALE
Colluvium and Alluvium
Weathered Bedrock
Siltstone or Shale
Sandstone
Coal Seam
Generalized Ground-Water Flow Path
Younger Ground Water
Older Ground Water
Mixture of Younger and OlderGround Water
Geology
Modified from Harlow and LeCain, 1991
NOT TO SCALE
Colluvium and Alluvium
Weathered Bedrock
Siltstone or Shale
Sandstone
Coal Seam
Generalized Ground-Water Flow Path
Younger Ground Water
Older Ground Water
Mixture of Younger and OlderGround Water
Geology
Modified from Harlow and LeCain, 1991
NOT TO SCALE
Colluvium and Alluvium
Weathered Bedrock
Siltstone or Shale
Sandstone
Coal Seam
Generalized Ground-Water Flow Path
Younger Ground Water
Older Ground Water
Mixture of Younger and OlderGround Water
Geology
Modified from Harlow and LeCain, 1991
SPRING
FRACTURES
Coastal Plain
Piedmont
Mesozoic Lowlands
Blue Ridge
Valley and Ridge
Appalachian Plateau
Hydrogeology of the Valley and Ridge
WestWest EastEast
?
From: Harlow, G.E., Jr., Orndorff, R.C., Nelms, D.L., Weary, D.J., and Moberg, R.M., U. S. Geological Survey Scientific Investigations Report 2005-5161, p. 30.
Coastal Plain
Piedmont
Mesozoic Lowlands
Blue Ridge
Valley and Ridge
Appalachian Plateau
Hydrogeology of the Blue Ridge and Piedmont
Coastal Plain
Piedmont
Mesozoic Lowlands
Blue Ridge
Valley and Ridge
Appalachian Plateau
http://www.hydro.geos.vt.edu/
Fractured rock aquifers
Crystalline rock aquifersCarbonate rock aquifers
Evidence of Water Flow in Fractures
Coastal Plain
Coastal Plain
Piedmont
Mesozoic Lowlands
Blue Ridge
Valley and Ridge
Appalachian Plateau
Ground-Water Monitoring Network for Virginia
What is an artesian well?
http://ga.water.usgs.gov/edu/watercyclesprings.html
Recharge area for artesian aquifer
Artesian well
Piezometric level
Water table well
Flowing artesian well
Stream
GEOLOGICALLY-CONTROLLED FLOWING WELL
Ground surface
TOPOGRAPHICALLY – CONTROLLED FLOWING WELLUnconfined aquifer condition
www.michigan.gov/documents/deq/deq-wb-dwehs-wcu-drillingpluggingflowingwells_209019_7.ppt
Resources
• USGS, WRD, Virginia District http://va.water.usgs.gov/
• USGS, WRD, Office of Ground Waterhttp://water.usgs.gov/ogw/
• VA Household Water Quality Programwww.wellwater.bse.vt.edu