| Abstract: | The U.S. Army Corps of Engineers has proposed dredging an approximate 7-mile reach of the South Fork Obion River near Sidonia, Tennessee. This dredging will have an effect on ground-water levels in a wetland area near the river. The river cuts into a sandy aquifer that is confined by an overlying clay layer. Ground water in the confined aquifer flows from a ridge on the north side of the study area toward the river, Estimates of aquifer transmissivity range from 3,300 to 18,800 feet squared per day.
Assuming a 3-foot decline in stream stage due to dredging, the maximum decline in ground-water levels would be about 2.4 feet at low flow. Ground-water levels in the aquifer would decline by at least 2 feet at a distance of 0.5 mile from the river within 60 days after the change in stream stage, regardless of the assumed transmissivity value. Water-level declines in the upper clay layer probably would be much smaller. The time required for a specified change in ground-water level is dependent on the aquifer properties and distance from the river. |
| Genre: | USGS Numbered Series |
| ProdID: | 30225 |
| Citation Author: | Tucci, Patrick; Hileman, G. E. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 12 p. :ill. ;28 cm. |
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| Citation Publisher: | U.S. Dept. of the Interior, U.S. Geological Survey ;
Books and Open-File Reports Section [distributor], |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 90-4041 |
| Citation Search Results Text: | Potential effects of dredging the South Fork Obion River on ground-water levels near Sidonia, Weakley County, Tennessee; 1992; WRI; 90-4041; Tucci, Patrick; Hileman, G. E. |
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| Citation Year: | 1992 |
| Type: | citation/reference |
| Text: | Potential effects of dredging the South Fork Obion River on ground-water levels near Sidonia, Weakley County, Tennessee; 1992; WRI; 90-4041; Tucci, Patrick; Hileman, G. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/wri_90_4041.jpg |
| URL (INDEX PAGE): | http://pubs.water.usgs.gov/wri904041/ |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Dept. of the Interior, U.S. Geological Survey ;
Books and Open-File Reports Section [distributor], |
