| Abstract: | Data collected for a wide range of flow conditions from September 8, 1975, to July 13, 1976, reveal that human and animal waste loading of streams and pesticides use in the Muddy Fork Silver Creek watershed, Indiana, are probably the most significant water-quality problems. Generally, the type(s) of water in tributary streams in the south and southwest parts of the watershed was calcium bicarbonate and in other tributaries were calcium sulfate and magnesium sulfate. Dissolved-solids concentrations of discharge from top-spill reservoirs were lower and more consistent over a range of flows than concentrations from uncontrolled streams. Concentrations of fecal coliform bacteria and fecal streptococcal bacteria ranged from 5 to 65 ,000 colonies per 100 milliliters and from 5 to 14,000 colonies per 100 milliliters, respectively. Data on periphyton, phytoplankton, and benthic communities collected during low flow in September 1975 indicate organic loading of Muddy Fork downstream from the town of Speed. Phytoplankton community structures varied temporally and spatially. Ranges of concentration (In micrograms per kilogram) of various chlorinated hydrocarbons in samples of bed materials were: chlordane, from 0 to 14; DDT, from 0 to 19; and PCB‘s, from 0 to 11. Concentrations of aldrin, DDD, DDE, heptachlor, and heptachlor epoxide of 5.1 micrograms per kilogram or less were also detected. The presence of these compounds makes them potentially available for accumulation in the biological food chain. (Woodard-USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 9350 |
| Citation Author: | Hardy, Mark A. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | v, 61 p. :ill., 2 maps (1 fold.) ;28 cm. -- |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 78-202 |
| Citation Search Results Text: | A water-quality assessment of the Muddy Fork Silver Creek watershed, Clark, Floyd, and Washington Counties, Indiana; 1978; OFR; 78-202; Hardy, Mark A. |
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| Citation Year: | 1978 |
| Type: | citation/reference |
| Text: | A water-quality assessment of the Muddy Fork Silver Creek watershed, Clark, Floyd, and Washington Counties, Indiana; 1978; OFR; 78-202; Hardy, Mark A. |
| 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, |
