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.. . Mr. George Patenod~ February 15. 1977 Page three 7. Spillway Overflow Easements , ~ 1":>',' within the Cache la poudre basin, many water storage reservoirs exist. The Colorado state engineer's office inspects the dams and spill~ays for safety. However, no one' has delineated flow patterns should spillage occur. Most of these reservoirs do not have space allpcated for floodwater storage. Should a dam failure occur, or ~aters pass Over the spillway, the spillage waters may cause flooding in normally dry areas. For example, when the lower Latham dam failed on April 12. 1973. the spillage water caused major flooding to the community of Kersey, Colorado. It was esti- mated that the towp sustained Over one million dollars in losses. 8. Study Administration For a pilot study such as this to be fully utilized by the planning departments and local governments, they need to have a good understanding of interim findings and study progress. This communication can be achieved through quarterly workshops and status reports. 9. Other Studies a. We anticipate that the hydrologic and hydraulic determinations will be in agreement with prior floodplain informa- tion reports, Volumes I, II, and III. Should differences in values result, we will need to know the magnitude and their effects on the designated lOO-year floodplains. b. communication should be made with the FIA study contractor for the'Larimer and Weld Counties flood insurance studies. c. Literature search of planning and water resOurce studies in the Cache la Poudre basin should be made. Colorado State University has completed several planning and floodplain management studies in the basin. Enclosed is a letter from the Board of County Commissioners of Weld County requesting the proposed study plan. It is our under- standing that Larimer County is preparing a similar letter. The Colorado Water Conservation Board endorses the Corps of Engineers .