Orange County NC Website
8 , <br /> model will be developed for both present and if available <br /> estimated future land use patterns. <br /> 2 . Water Surface Profile Model. The computer program <br /> HEC-RAS will be used to develop water surface profiles. <br /> Valley cross section information will be developed utilizing <br /> digitized topographic data and field surveyed stream <br /> sections and bridge data. Water Surface profiles will be <br /> developed for the 10, 25, 50 and 100 year flood events. <br /> Water surface profiles will be developed for both present <br /> and future conditions. <br /> 3 . Flood Reduction Alternatives. Develop conceptual <br /> flood reduction alternatives which can be used to make <br /> decisions concerning management of stormwater runoff. <br /> 4 . Report preparation and training. A technical report <br /> will be provided at the end of the study explaining the <br /> methodology used to develop the models. Corps of Engineers <br /> personnel will assist the local sponsors in the use of any <br /> models developed during the study. <br /> FUTURE WORK ITEMS: Dependent of future funding abilities of <br /> both the Corps of Engineers and the local 'sponsors, the <br /> study effort may be expanded to include planning for more <br /> comprehensive watershed management. Future work items may <br /> include: <br /> 1. Alternatives for flood damage reduction planning <br /> a. Flood warning systems <br /> b. Comprehensive watershed planning database <br /> c. Digitized Flood Plain mapping <br /> d. FIS digitized mapping <br /> e. GIS mapping for State water plan <br /> 2 . Economic Analysis studies <br /> ar. Flood hazard evaluation studies <br /> 3 . Environmental planning <br /> a. Wetland delineation and assessment <br /> 4 . Hydrologic/Hydraulic studies <br /> a. Hydrologic Modeling for non-point source pollution <br /> b. Future retention basin studies <br />