| Abstract: | Analyses of water collected at 32 sites on headwater streams in Pennsylvania during low-flow conditions in 1970-80 were compared to pre-1971 data to evaluate whether acid rain had changed the chemistry of the streams in the previous decade. Most pH, alkalinity, and sulfate values of the samples collected in 1970-80 fell within the ranges of values for samples collected before 1971. The limited data indicate, however, that pH may have increased and alkalinity and sulfate may have decreased with time. |
| Genre: | USGS Numbered Series |
| ProdID: | 10863 |
| Citation Author: | Ritter, John R.; Brown, Ann E. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 55 p. ill., maps ;27 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 81-1025 |
| Citation Search Results Text: | An evaluation of the effects of acid rain on low conductivity headwater streams in Pennsylvania; 1981; OFR; 81-1025; Ritter, John R.; Brown, Ann E. |
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| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | An evaluation of the effects of acid rain on low conductivity headwater streams in Pennsylvania; 1981; OFR; 81-1025; Ritter, John R.; Brown, Ann E. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1981/1025/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1981/1025/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
