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Assessing the Impact of Land Use and Storm Water Infrastructure on Stream and Watershed Integrity: An Automated Approach Using GIS Author: Mark Unwin 13921 Park Center Road Phone: 703-471-1441 Stream aquatic integrity is directly affected by physical changes in a watershed, some of which result in the degradation of the chemical and/or physical condition of the stream. A holistic approach to integrating habitat and riparian zone information with biological and chemical data allows for comprehensive stream and watershed assessment. Development of GIS-based tools to collect, analyze, and present land use, storm water infrastructure, and field (stream survey) data and to automate quantification of stream and watershed quality and integrity will be presented. A stream assessment and quantification protocol has also been incorporated into the GIS system and will be discussed. A case study in Henrico County, Virginia, will be presented. |