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Utilization of Landscape Indicators to Model Watershed Impairment

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Abstract:

Many water-bodies within the United States are contaminated by non-point source (NPS) pollution, which is defined as those materials posing a threat to water quality arising from a number of individual sources and diffused through hydrologic 13romses. One such NPS
pollutant is fecal coliform, which is derived from animal rights, including human and is most often associated with urban and agricultural areas. It is postulated that by utilizing land cover indicators, those water-bodies that may be at risk of fecal coliform contamination may be identified. This study utilized land cover information derived from the. Multi-Resolution Land Characterization (MRLC) project to analyze fecal coliform contamination in South Carolina. Also utilized were fourteen digit hydrologic unit code (HUC) watersheds of the state, a digital elevation model, and test point data stating whether the fecal coliform levels exceeded levels assigned in section 303(d) of the Clean Water Act. Proportions of the various land covers were identified within the individual watersheds and then analyzed using a logistic, regression. TIM results reveal that watersheds with large proportions of urban- land cover and agriculture on steep slopes had a very high probability of being impaired.
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Citation:Smith, J. H., K. B. Jones, J. D. Wickham, and T. G. Wade. Utilization of Landscape Indicators to Model Watershed Impairment. AMERICAN WATER RESOURCES ASSOCIATION, WATER RESOURCES BULLETIN, AND INTERNATIONAL ASSOCIATION ON WATER QUALITY 37(4):805-814, (2001).
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Contact: Chris Siebert - (702) 798-2234 or siebert.christopher@epa.gov
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Division: Environmental Sciences Division
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Branch: Landscape Characterization Branch (RTP)
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Product Type: Journal
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Published: 08/21/2001
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Related Entries:
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Bullet Item Landscape Characterization and Change Detection Methods Development Research (2005-2007)
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Last Updated on Monday, October 22, 2007
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