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. . basin. Other manmade features which may have an effect on flooding in the basin are College Lake on CSU property in the western end of the basin, the embankment of the abandoned Colorado and Southern Railroad at the northeastern comer of the basin (near Shields Street) and the inadvertent detention areas behind various streets in the basin (low areas upstream of the roads which pond water until the roads are overtopped, sometimes causing flooding in homes). There are two branches to the drainageway. The Southern Branch is the larger branch. It flows northeasterly, passing just north of Poudre High School and then through the Poudre R1 School District's Administrative Center. The Northem Branch flows easterly, passing through the Irish Green subdivision. The two branches join just east of Taft Hill Road. The combined drainageway flows easterly until a point just west of Shields Street, then turns to the north. When it reaches the abandoned railroad, it splits and flows in various directions, trying to make its way to the Cache la Poudre River. Floodinl! Problems and Floodinl! Ristorv Flooding problems in West Vine Drainage Basin are caused by inadequate storm drainage systems, flat topography, and man-made flow obstructions that block the natural drainage courses (i.e. railroad embankment, county roads, houses, etc.). Some houses have water in their basements or crawl spaces on almost an annual basis. Numerous furnaces have been ruined by flooding in the basin. Flooding in May 1980 was documented photographically in the Major Drainageway Plan prepared in 1980 by the City of Fort Collins. Floods in the West Vine Drainage Basin normally occur during the spring and summer months from May through September as a result of intense thunderstorms or large general rainstorms. 1997 Flood Event In addition to flooding in the City of Fort Collins and in other unincorporated portions of Larimer County, the storm of July 28, 1997 caused extensive flooding in the West Vine Drainage Basin. Flooding actually began on July 27 and continued into the daytime hours of July 28. The most serious flooding occurred the evening of July 28, at the same time as flooding occurred on Spring Creek and some of the other basins in the Fort Collins area. Damages included flooded homes and damage to the Poudre R1 Administrative Center, road damage, erosion and damage to irrigation canals. Larimer County, among other Colorado Counties, officially received a federal disaster declaration on August 1, 1997 based on severe flooding conditions. The disaster declaration made it possible for Larimer County to be eligible to receive federal funding (disaster relief) which includes individual assistance, public assistance, and mitigation assistance. Larimer County officials made verbal requests to the CWCB for technical assistance with developing a flood hazard mitigation feasibility study to address drainage and flooding problems in the West Vine Drainage Basin. They also took CWCB staff on tours of the basin to view damage and to explain the drainage problems. Obiective The Project objective is to develop a flood hazard mitigation feasibility study and prepare portions of a fmal report to assist the local government (Larimer County) with the preparation of a full application for the Hazard Mitigation Grant Program (HMGP). The completed application with included technical information must satisfy all of the FEMA requirements in order for the community to be eligible to receive federal grant money for project implementation. For the 2