| Abstract: | A mathematical technique, called kriging, was programmed for a computer to interpolate hydrologic data based on a network of measured values in west-central Kansas. The computer program generated estimated values at the center of each 1-mile section in the Western Kansas Groundwater Management District No. 1 and facilitated contouring of selected values that are needed in the effective management of ground water for irrigation. The kriging technique produced objective and reproducible maps that illustrated hydrologic conditions in the Ogallala aquifer, the principal source of water in west-central Kansas. Maps of the aquifer, which use a 3-year average, included the 1978-80 water-table altitudes, which ranged from about 2,580 to 3,720 feet; the 1978-80 saturated thicknesses, which ranged from about 0 to 250 feet; and the percentage changes in saturated thickness from 1950 to 1978-80, which ranged from about a 50-percent increase to a 100-percent decrease. A map showing errors of estimate also was provided as a measure of reliability for the 1978-80 water-table altitudes. Errors of estimate ranged from 2 to 24 feet. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 40197 |
| Citation Author: | Finn, C. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 1 map ;46 x 35 cm. |
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| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 81-98 |
| Citation Search Results Text: | Complete Bouguer gravity map of the Medicine Lake Quadrangle, California; 1981; OFR; 81-98; Finn, C. |
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| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | Complete Bouguer gravity map of the Medicine Lake Quadrangle, California; 1981; OFR; 81-98; Finn, C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (PLATE): | http://pubs.usgs.gov/of/1981/0098/plate-1.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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