| Abstract: | The Chesapeake Bay and other important surface- water bodies receive ground water that discharges directly from the Coastal Plain of Virginia. This report presents estimates of the average annual ground-water discharge from the Coastal Plain of Virginia using two approaches. Average annual ground-water discharge from 16 gaged watersheds in the Coastal Plain of Virginia estimated by use of a streamflow hydrograph-separation approach ranged from 7.5 to 12.5 inches per year; the median was 10.8 inches per year. These estimates are similar to those reported by other investigators for the Coastal Plain in the nearby Delmarva Peninsula. Average annual ground-water discharge also was estimated by use of a hydrogeologic-area approach. In this approach, areas that have similar hydrogeologic charac- teristics are grouped and multiple regression is used to determine the relation between the hydro- geologic areas and ground-water discharge. The multiple-regression analysis indicates that ground-water discharge within the Coastal Plain of Virginia is a function of the relative areal extent of well-drained uplands and moderately well-drained uplands. On the basis of the hydro- geologic-area approach, ground-water discharge from the Coastal Plain of Virginia averages 9.9 inches per year. |
| Genre: | USGS Numbered Series |
| ProdID: | 29345 |
| Citation Author: | Richardson, D. L. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 15 p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey ;
USGS Earth Science Information Center, Open-File Reports Section [distributor], |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 93-4191 |
| Citation Search Results Text: | Ground-water discharge from the Coastal Plain of Virginia; 1994; WRI; 93-4191; Richardson, D. L. |
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| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | Ground-water discharge from the Coastal Plain of Virginia; 1994; WRI; 93-4191; Richardson, D. L. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1993/4191/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1993/4191/report.pdf |
| URL (PLATE): | http://pubs.usgs.gov/wri/1993/4191/plate-1.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey ;
USGS Earth Science Information Center, Open-File Reports Section [distributor], |
