| Abstract: | Intensive study in an area of 12-square miles in northeastern Wichita County, Kansas, has shown a decrease of 30 to 50% in saturated thickness of the Ogallala Formation since the development of irrigation. Projections from a digital model indicated the additional water-level declines that might occur from 1978 to 1989 if the pumpage in the model area was assumed to be one-half, equal to, or double the 1977 rate. The additional declines would range from 5 to 15 feet, 15 to 30 feet , and 25 to 40 feet, respectively. If pumpage only in the intensive-study area were assumed to be one-half or double the 1977 rate, water-level declines would range from 10 to 20 feet and from 20 to 25 feet, respectively. Reducing pumpage only in the intensive-study area could reduce the water-level declines locally. However, declines would be greatest near the edge of the area as a result of continued pumpage by wells outside the area. The digital model was more sensitive to changes in pumpage than to changes in hydraulic conductivity, specific yield, or recharge. |
| Genre: | USGS Numbered Series |
| ProdID: | 26892 |
| Citation Author: | Dunlap, Lloyd E. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 15 p. :ill., maps ;27 cm. [PGS: 42 p.] |
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| Citation Publisher: | U.S. Geological Survey, Water Resources Division, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 80-39 |
| Citation Search Results Text: | Simulated water-level declines near Marienthal, west-central Kansas; 1980; WRI; 80-39; Dunlap, Lloyd E. |
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| Citation Year: | 1980 |
| Type: | citation/reference |
| Text: | Simulated water-level declines near Marienthal, west-central Kansas; 1980; WRI; 80-39; Dunlap, Lloyd E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, Water Resources Division, |
