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| Titel: |
Water quality in a mixed land use watershed-piedmont region |
| Auteur: |
Shirmohammadi, Adel Yoon, Kwang S. Magette, William L. |
| Verschenen in: |
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering |
| Paginering: | Jaargang 31 (1996) nr. 2 pagina's 429-450 |
| Jaar: |
1996-02 |
| Inhoud: |
Nonpoint source pollution, particularly from agricultural land, has become a national concern in recent years. It was this concern that lead Maryland to identify Monocacy River Basin as a priority watershed regarding the potential loadings of sediment and agricultural chemicals to the Chesapeake Bay. To asses the status, nature and magnitude of the nonpoint source pollution in this basin, a watershed scale monitoring project was established in the Wamer watershed located in Frederick County, Maryland. Watershed contains 346 ha land with Piedmont geology and diverse land use. Both paired watershed and upstream-downstream monitoring design (US-EPA's design guidelines) was established to measure flow, sediment, and nutrient constituents at different stations throughout the watershed. Monitoring results obtained for the period of 1993 until June 1995 was analyzed and is presented in this paper. Data indicated that, major cause of pollution was mismanagement of dairy manure and overall mismanagement of dairy operation. Results showed that lack of fencing around stream channel in a watershed with dairy operation resulted in direct deposit of animal waste into the stream, thus causing elevated concentrations of nitrogen and phosphorous. Data also indicated that subsurface lateral flow plays a major role in nitrate loadings to the stream channel in Piedmont physiographic region. This study concludes that implementation of agricultural best management practices (BMP's) related to land use and manure management is a must if water quality improvements are desired. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 15 van 15 gevonden artikelen
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