FLOOD10512 (2) - Laserfiche WebLink

Home Browse Search

FLOOD INSURANCE STUDY GARFIELD COUNTY, COLORADO (UNINCORPORATED AREAS) 1.0 INTRODUCTION 1.1 Purpose of Study This Flood Insurance Study (FIS) has been prepared to revise and update a previous FIS for 'the unincorporated areas of Garfield County, Colorado.. This information will be used by Garfield County to update existing floodplain regulations as part of the regular program of flood insurance by the Department of Homeland Security's Federal Emergency Management Agency (FEMA). The information will also be used by local and regional planners to further promote sound land use and floodplain development. In some States or communities, .floodplain management criteria or regulations may exist that are more restrictive or comprehensive than the minimum Federal requirements. In such cases, the more restrictive criteria take precedence and the State (or other jurisdictional agency) will be able to explain them.. 1.2 Authority and Acknowledgments The sources of authority for this FIS are the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. The hydrologic and hydraulic analyses for this study were performed by the u.s. Army Corps of Engineers (USACE), Sacramento District, for the Federal Insurance Administration, under Inter-Agency Agreement Nos. IAA-H-16-75 and IAA-H-7-76, Project Order Nos. 20 and I, respectively. Revised hydrologic and hydraulic analyses for the Roaring Fork River, Cattle, Rifle, and Government Creeks and Hubbard Gulch along with new hydrologic and hydraulic analyses for the Crystal River, Fourmile, Threemile, and Mitchell Creeks and Helmer and Ramsey Gulches were performed by Simons, Li & Associates, Inc., for FEMA, under Contract No. EMW -C-0942. This study was completed in December 1983.. This study was revised on August 2, 2006, to incorporate revised flooding information for the Colorado River and its tributaries. This revision covers the area of the Colorado River. The restudy affects the Town of Silt and the unincorporated areas of Garfield County. The hydrologic and hydraulic analyses for the Colorado River were performed by the USACE, Sacramento District, and the Colorado Water Conservation Board (CWCB). Additional data were provided by consultants to the Town of Silt, Schmueser Gordon Meyer, Inc. This work was completed in October 2004. The Colorado River was studied by detailed methods from just upstream of eastbound Interstate (I) 70 Bridge to the County Road (CR) 33.