| Abstract: | The most productive aquifers of the Virginia Coastal Plain are in the Potomac Formation. Water supplies in the Potomac aquifers are impaired, however, by saltwater in some areas. A two-dimensional, densitydependent, solute-transport model was used to investigate saltwater movement in the Potomac aquifers and the potential for saltwater intrusion or upward migration of saltwater. The model was designed to represent a simplified section of the Potomac aquifers and associated confining units near Lee Hall, Va. Solute-transport simulations show that the direction of ground-water flow and the hydrogeologic properties, particularly the permeability of aquifers and the distribution of confining sediments in the Potomac Formation, control the system hydrodynamics and saltwater movement in the Potomac aquifers. The simulations indicate lateral intrusion for the Lower Potomac aquifer near Lee Hall, Va. Velocity vectors of the simulations indicate that a hypothetical, but typical, production well in the Middle Potomac aquifer could induce upconing only within the immediate vicinity of the well. Migration of saltwater from the Middle and Lower Potomac aquifers east of the hypothetical well also was indicated by the simulations. |
| Genre: | USGS Numbered Series |
| ProdID: | 29799 |
| Citation Author: | Smith, Barry S. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | iv, 24 p. :ill., maps ;28 cm. |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Dept. of the Interior, U.S. Geological Survey ;
Branch of Information Services [distributor], |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 98-4187 |
| Citation Search Results Text: | The potential for saltwater intrusion in the Potomac aquifers of the York-James Peninsula, Virginia; 1999; WRI; 98-4187; Smith, Barry S. |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | The potential for saltwater intrusion in the Potomac aquifers of the York-James Peninsula, Virginia; 1999; WRI; 98-4187; Smith, Barry S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Fri, 1 Dec 2000 00:00 -0600 |
| Publisher: | U.S. Dept. of the Interior, U.S. Geological Survey ;
Branch of Information Services [distributor], |
