Laserfiche WebLink
<br />. <br /> <br />. <br /> <br />. <br /> <br />Previous Studies <br />A report entitled "Special Flood Hazard Information Report, South Platte River, Volume II, <br />Morgan County - Washington County, Colorado" dated May 1977 was produced by the U.S. Army <br />Corps of Engineers in cooperation with the Colorado Water Conservation Board. Additional <br />information on flooding problems, flood history, hydrology, and floodplain limits for the South <br />Platte River can be found in that report. <br /> <br />Communitv Resooose to the CWCB Desil!llation and Aooroval Process <br />A letter from the CWCB was transmitted to the City of Fort Morgan regarding the Board's <br />proposed action for designation and approval of the Fort Morgan FIRM. The City was interested in <br />discussing several issues related to the FEMA floodplain mapping for their community. A meeting <br />was held between the Public Works Director and CWCB staff to discuss and review mapping <br />errors, flooded areas, floodplain regulations, flood history, and the Board's designation and <br />approval of the floodplain information_ The City was interested in having corrections made to the <br />floodplain mapping, and those desired corrections have been recognized in the Floodplain <br />Resolution and in this FIR Once the errors were officially recognized by the CWCB, the City was <br />receptive to the Board's proposed designation action. The City sent an official letter requesting that <br />the CWCB designate and approve the floodplain information currently available to the community. <br />A copy of the request letter is included in the Appendix of this report. <br /> <br />ENGINEERING METHODS <br /> <br />Hvdroloeic Analvsis <br />Hydrologic information used for the South Platte River floodplain delineation in Fort Morgan's <br />FIRM is not available or was not documented by FEMA. However, acceptable hydrologic <br />information was developed for the previously mentioned Corps study for the South Platte River. <br />For the purposes of Floodplain Designation, the flood hydrology values contained in the Corps <br />study are summarized in Table I. Additional information on the South Platte hydrology can be <br />found in the 1977 Corps of Engineers study. <br /> <br />Table I <br />South Platte River. Summary of Discharges <br /> <br />Location lOO-vear Peak Flow (cfs) <br />At the Weld-Moman Countv line 43,000 <br />Uostream from Kiowa Creek 42,500 <br />Downstream from Kiowa Creek 42,500 <br />Uostream from Biiou Creek 42,000 <br />Downstream from Biiou Creek (Fort Morf!an) 114,000 <br />Uostream from Bad!!er Creek 93,000 <br />Downstream from Badger Creek 104,500 <br />Mor!!an-Washin!!ton County line 94,000 <br /> <br />3 <br />