| Abstract: | Runoff of road salt from an interstate highway in New Hampshire has led to contamination of a lake and a stream that flows into the lake, in spite of the construction of a diversion berm to divert road salt runoff out of the lake drainage basin. Chloride concentration in the stream has increased by over an order of magnitude during the 23 yr since the highway was opened, and chloride concentration in the lake has tripled. Road salt moves to the lake primarily via the contaminated stream, which provides 53% of all the chloride to the lake and only 3% of the total streamflow to the lake. The stream receives discharge of salty water froth leakage through the diversion berm. Uncontaminated ground water dilutes the stream downstream of the berm. However, reversals of gradient during summer months, likely caused by transpiration from deciduous trees, result in flow of contaminated stream water into the adjacent ground water along the lowest 40-m reach of the stream. This contaminated ground water then discharges into the lake along a 70-m-wide segment of lake shore. Road salt is pervasive in the bedrock between the highway and the lake, but was not detected at all of the wells in the glacial overburden. Of the 500 m of shoreline that could receive discharge of saly ground water directly from the highway, only a 50-m-long segment appears to be contaminated. |
| Genre: | Article |
| ProdID: | 70022037 |
| Citation Author: | Rosenberry, D. O.; Bukaveckas, P. A.; Buso, D. C.; Likens, G. E.; Shapiro, A. M.; Winter, T. C. |
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| Citation End Page: | 206 |
| Citation Issue: | 1-4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Water, Air, and Soil Pollution |
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| Citation Number Of Pages: | 28 |
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| Citation Publisher: | Kluwer Academic Publishers |
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| Citation Search Results Text: | Movement of road salt to a small New Hampshire lake; 1999; Article; Journal; Water, Air, and Soil Pollution; Rosenberry, D. O.; Bukaveckas, P. A.; Buso, D. C.; Likens, G. E.; Shapiro, A. M.; Winter, T. C. |
| Citation Start Page: | 179 |
| Citation Volume: | 109 |
| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | Movement of road salt to a small New Hampshire lake; 1999; Article; Journal; Water, Air, and Soil Pollution; Rosenberry, D. O.; Bukaveckas, P. A.; Buso, D. C.; Likens, G. E.; Shapiro, A. M.; Winter, T. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1023/A:1005041632056 |
| Date Other: | Fri, 1 Jan 1999 00:00 -0600 |
| Publisher: | Kluwer Academic Publishers |
