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FLOOD INSURANCE STUDY 1.0 INTRODUCTION ~ 1.1 Purpose of Study The purpose of this Flood Insurance Study is to' investigate the existence and severity of flood hazards in the Town of Lyons, Boulder 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 information will be to convert Lyons 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 A meeting was held on February 25, 1977, and was attended by a representative of the Federal Insurance Administration, the Mayor of Lyons, and representatives of the study contractor to discuss areas to be studied and methods to be used. The U.S. Army Corps of Engin-. eers and the Colorado Water Conservation Board were contacted for available data. , A general information search was made at the Denver Public Library and at the Boulder County Courthouse for historical background information, available publications, and photographs of past floods. The U.S. Geological Survey and the State Historical Society were also contacted. ; A final community coordination meeting, held on June 19, 1978, was attended by representatives of the Federal Insurance Administration, the Colorado Water Conservation Board, the study contractor, and city officials,. and interested citizens. This study incorporates all appropriate comments, and all problems have been resolved. 1.3 Authority and Acknowledgments The source of authority for this Flood Insurance Study is the National Flood Insurance Act of 1968; as amended. The hydrologic and hydraulic analyses for this study were performed by Howard, Needles, Tammen & Bergendoff, for the Federal Insurance Administration, under Contract No. H-4016. This work, which was completed in October 1977, covered all significant flooding sources affecting the Town of Lyons. . "