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NASA satellite improves pollution monitoring
Date:7/25/2010

esearchers selected seven watersheds within the Chesapeake Bay drainage basin to test the NASA-modified products. They were selected based on their dispersed locations within the drainage basin, an absence of reservoirs or diversions, and the presence of water quality data. Each watershed was also selected based on whether it represented a specific topographic and land cover/land use, so that the study could be conducted within a range of elevations and land cover types to understand how these variations affect the results.

The U.S. Environmental Protection Agency (EPA) estimates that over 20,000 water bodies within the United States do not meet water quality standards. The models that this research aims to improve are designed to assessing pollution and to guide the decision making process for improving water quality. The 1972 Clean Water Act requires states to monitor the total daily load a body of water can carry before it is considered polluted.

Although states may also monitor water quality with in-stream measuring and sampling, some states lack the resources to assess and protect water bodies with monitoring data alone. Models are a practical solution by taking into account the response of streams to storm runoff and pollution.


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Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4989
American Society of Agronomy
Source:Eurekalert  

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