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FLOOD INSURANCE STUDY 1. 0 INTi{Ql)l!<::5ION 1.1 Purppse of Study The purpose of this Flood Insurance Study is to investigate the existence and severity of flood hazards in the Town of Silverton and unincorporated areas of San Juan County, Colorado, and to aid in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. Initial use of this informa- tion will be to convert Silverton and the unincorpoated areas of San Juan County to the regular program of flood insurance by the Federal Insurance Administration. Further use of the information will be made by local and regional planners in their efforts to promote sound land use and flood plain development. 1.2 Coordination An initial coordination meeting was held on July 19, 1976, attended by appropriate officials of the Town of Silverton and San Juan County, and representatives of the Federal Insurance Administration, the Colorado Water Conservation Board (the State Coordination Agency) , and t.he study contractor. The purpose of this meeting was to discuss the nature, purpose, scope, and limits of work for the study, and flood information currently available concerning the community. Federal, State, and local agencies were contacted as to the avail- ability (jf any reports, studies or investigations which might contain some information relative to flooding problems in the community. During the course of the work done by the study contactor, results of hydrologic analyses were reviewed by the U.S. Army Corps of Engineers, Sacramento District; U.S. Geological Survey; u.S. Soil Conservation Service; and Colorado Water Conservation Board. Flood elevations, flood boundaries, and floodway delineations were reviewed with community officials. On August 16, 1977, the results of the work done by the study contractor were reviewed at a final coordination meeting attended by representatives of the Federal Insurance Administration, Colorado Water" Conservation Board, the Town of Silvcrton, San Juan County, and the study contractor. Changes resulting from the final coordina- tion- meeting have been incorporated in the study. 1.3 Authority and Acknowledgments The source of authority for this Flood Insurance Study is the National Flood Insurance Act of 1968, as amended.