| Abstract: | Changes in water quality in an alluvial aquifer resulting from the operation of a feedlot stocked with 90,000 cattle have been minimal. Monitoring water quality in 19 observation wells from April 1974, prior to the operation of the feedlot, to June 1978, after about 4 years of operation, indicates that chloride concentrations have increased slightly in one well downgradient from a runoff-retention pond. Chemical analyses of water from two lysimeters installed in the unsaturated zone indicate that leachate from the feedlot has percolated to a depth of at least 5 feet but has not percolated to a depth of 20 feet. The small changes in ground-water quality caused by the feedlot are likely the result of the limited available recharge, a relatively impermeable manure pack, soil clogging under the cattle pens resulting in slow vertical movement of leachate through the unsaturated zone, soil clogging under the unlined runoff-retention ponds, and denitrification in the unsaturated zone. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 26264 |
| Citation Author: | Borman, R. G. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 78 p. :ill., maps ;27 cm. |
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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: | 80-83 |
| Citation Search Results Text: | Effects of a cattle feedlot on ground-water quality in the South Platte River Valley near Greeley, Colorado; 1981; WRI; 80-83; Borman, R. G. |
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| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | Effects of a cattle feedlot on ground-water quality in the South Platte River Valley near Greeley, Colorado; 1981; WRI; 80-83; Borman, R. G. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1980/0083/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1980/0083/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, Water Resources Division, |
