Scaling and Management of Fecal Indicator Bacteria in Runoff from a Coastal Urban Watershed in Southern California
| Autor: | Carmen Oancea, Robert D. Mrse, Stanley B. Grant, Alexandria B. Boehm, Ryan L. Reeves, Brett F. Sanders |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Environmental Science & Technology. 38:2637-2648 |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es034797g |
| Popis: | This paper describes a series of field studies aimed at identifying the spatial distribution and flow forcing of fecal indicator bacteria in dry and wet weather runoff from the Talbert watershed, a highly urbanized coastal watershed in southern California. Runoff from this watershed drains through tidal channels to a popular public beach, Huntington State Beach, which has experienced chronic surf zone water quality problems over the past several years. During dry weather, concentrations of fecal indicator bacteria are highest in inland urban runoff, intermediate in tidal channels harboring variable mixtures of urban runoff and ocean water, and lowest in ocean water at the base of the watershed. This inland-to-coastal gradient is consistent with the hypothesis that urban runoff from the watershed contributes to coastal pollution. On a year round basis, the vast majority (>99%) of fecal indicator bacteria loading occurs during storm events when runoff diversions, the management approach of choice, are not o... |
| Databáze: | OpenAIRE |
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