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e e e ECI, a division of the DJMJ+HARRIS, was placed under contract to review earlier work and identify feasible alternatives. That activity culminates in this Feasibility Study Report for submittal to the Colorado Water Conservation Board. The expressed purpose of submitting the Feasibility Study Report is to secure project funding, in the form of a loan frorn the Construction Loan Fund, for building a structural project. HISTORY OF COLORADO WATER CONSERVATION BOARD INVOLVEMENT In November 1995, a loan request to the Colorado Water Conservation Board was made for $600,000 for a Dry Creek Project to construct a diversion in accordance with the 1980 Gingery Association Inc. (GAl) recommendation. Of that amount, $500,000 was authorized and funded by the Colorado Legislature. A second loan request was made jointly by Larimer County and the City of Fort Collins in November 1996. Of the $600,000 in the second request, the Colorado Legislature authorized $420,000. In 2001 the Colorado Legislature de-authorize the existing Construction Fund authorizations totaIing $920,000 and approved a grant of $50,000 to fund the completion of the Dry Creek Feasibility Study. TECHNICAL INFORMATION Hydrologic studies dating back to 1979 have estimated the peak rates of flood flow for various precipitation recurrence intervals for the Dry Creek Basin. The rnore recent study conducted at the request of the Omaha District US Army Corps of Engineers, estimated the peak flow rate of a 100-year storm at Willox Lane to be 5,000-cfs. A Dry Creek flood would inundate a significantly large developed area of northeast Fort Collins and unincorporated Larimer County. One area of potentially significant damage is the area north of Lincoln A venue (just south of Dry Creek) and south of East Vine Drive, see Figure 2, Lower Dry Creek Basin. This area is almost entirely within the unincorporated area of the County, but within the IGA region for annexation to Fort Collins. The area includes several industrial commercial subdivisions as well as the Downtown Fort Collins Airport and low-income residential housing. Correspondingly, a Dry Creek flood would inundate a sizeable area of the North College Avenue Corridor extending north of East Vine about one mile. This area is mostly within the City. This area is predominately low-incorne residential housing with small businesses along the frontage of College Avenue. Today several abandoned structures can be found in this area GAl prepared a Dry Creek Major Drainageway Planning Study for the City of Fort Collins, Larimer County and the Colorado Water Conservation Board in 1980. That study included a hydrological study of the Dry Creek watershed, a flood hazard study of the area downstream of Colorado State Highway 287, and a study of alternatives for eliminating the flood hazard downstream of the intersection of Will ox Lane and Dry Creek. The 1980 GAl study recommended diverting Dry Creek floodwaters downstream from the L-W Canal in a southerly direction into the Cache La Poudre River. This plan would remove the 100-year flood hazard from the area south and east of the point of diversion. The diversion was proposed for the location where Dry Creek intersects with the L-W Canal about 100 yards north of Willox Lane. The area within the Dry Creek floodplain 12