| Abstract: | During 1977 and 1978 the Wyoming Department of Agriculture, in conjunction with county weed and pest control districts, conducted a noxious-weed-control program in Wyoming. The herbicides primarily used were picloram, 2,4-D, and dicamba. The U.S. Geological Survey, in cooperation with the Wyoming Department of Agriculture, sampled and analyzed water from selected streams for these herbicides plus silvex; 2,4,5-T; and 2,4-DP. This report contains data for samples collected during 1977 and 1978. The most commonly detected herbicides in water samples were 2,4-D with 41% nonzero values and picloram with 34.5% nonzero values. Herbicide occurrence in bottom-material samples was uncommon; dicamba was found with 9% nonzero values. The maximum herbicide concentration in water was 1.1 micrograms per liter of 2,4-D, and the maximum herbicide concentration in bottom material was 8.0 micrograms per kilogram of 2,4-D. Based on available toxicity data and water-quality criteria, these herbicide concentrations do not constitute dangerous or harmful concentrations to humans or to the environment. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 48573 |
| Citation Author: | Butler, David L. |
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| Citation Edition: | - |
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| Citation Language: | ENGLISH |
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| Citation LatN: | 0450000 |
| Citation LatS: | 0410000 |
| Citation LonE: | -1040500 |
| Citation LonW: | -1110500 |
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| Citation Phsyical Description: | v, 17 leaves (some folded) : maps ; 29 cm. |
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| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 80-1110 |
| Citation Search Results Text: | Effects of herbicide usage on water quality of selected streams in Wyoming; 1980; OFR; 80-1110; Butler, David L. |
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| Citation Year: | 1980 |
| Type: | citation/reference |
| Text: | Effects of herbicide usage on water quality of selected streams in Wyoming; 1980; OFR; 80-1110; Butler, David L. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1980/1110/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1980/1110/report.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1980/1110/plate-1.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1980/1110/plate-2.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1980/1110/plate-3.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1980/1110/plate-4.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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