| Abstract: | Proposed construction of a series of locks and dams in the Red River in Louisiana will cause a permanent increase in average river stage. The potentiometric surface of the shallow alluvial aquifer and the water table in the fine-grained material confining the aquifer will be affected. The purpose of this study, using digital-modeling techniques, was to predict the average postconstruction potentiometric surface (steady state) and the water table (nonsteady state) so that potential effects of the water-level changes could be evaluated. Plans for lock and dam 3 at realined mile 111 (kilometer 179) above the mouth of the Red River call for a pool elevation of 87 feet (27 meters) and will cause an average increase in river stage ranging from 21 to 3.5 feet (l.4 to 1.1 meters). As a result, ground-water levels will be raised to near land surface in low areas east of the river from the damsite to Aloha and in a 0.5-mile (0.8-kilometer) strip along the west side extending 9 miles (14 kilometers) above the dam. The potentiometric surface may be above land surface locally near the dam. The magnitude of ground-water-level fluctuations near the river will be reduced to less than half the preconstruction range. (Woodard-USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 48464 |
| Citation Author: | Ludwig, A. H.; Terry, J. E. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 21 p. |
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| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 79-920 |
| Citation Search Results Text: | Preconstruction and postconstruction ground-water levels, Lock and Dam 3, Red River Valley, Louisiana; 1979; OFR; 79-920; Ludwig, A. H.; Terry, J. E. |
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| Citation Year: | 1979 |
| Type: | citation/reference |
| Text: | Preconstruction and postconstruction ground-water levels, Lock and Dam 3, Red River Valley, Louisiana; 1979; OFR; 79-920; Ludwig, A. H.; Terry, J. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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