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Paul Ayers - Biosystems Engineering, University of Tennessee GPS-based river videomapping has been used to continuously map river systems at the National Park Service (NPS) Obed (45 miles) and Wekiva (12 miles) Wild and Scenic Rivers (WSR). River videomapping consists of continuously acquiring georeferenced video and river physical characteristics of river systems. Physical river features such as river width, depth, rugosity and sinuosity have been mapped in ArcGIS. In addition, substrate, river characteristic (pool, riffle, run), embeddedness and river infrastructure have been determined continuously. From these features, locations of wildlife habitat (including optimum endangered aquatic species habitat) and Outstandingly Remarkable Values (ORV) have be determined. ORV’s and human intrusion infrastructure (houses, docks, bridges, etc.) have been mapped at the Wekiva WSR. Dock density plots and associated images have been incorporated into the ArcGIS maps. Using the technology, “wild”, “scenic” and “recreational” ORV’s can be identified and mapped. The georeferenced video database of the Wild and Scenic River provides a snapshot of the existing ORV conditions that need to be mapped, monitored and managed. The video can be reviewed to detect river condition changes as impacts occur. Read less