Thompson River and flowed into Lake Estes on the eastern edge of the city. Olympus Dam, part of the Colorado-Big Thompson Project, there withstood the deluge and the flood was halted. Aftermath The scar left by the scouring of Roaring River and the alluvial fan at Horseshoe Park are still very apparent 37 years later and will remain for a very long time . Twenty-five years after the accident, the extent of the former reservoir is still clearly evident, and at the mouth of the lake, the start of the Roaring River flows through the location of the former dam. As a consequence of the dam failure, aging dams at Pear Reservoir, Bluebird Lake and Sandbeach Lake in the park were demolished and removed. References Hydrology, Geomorphology, and Dam-break Modeling of the July 15, 1982, Lawn Lake Dam and Cascade Lake Dam Failures, Larimer County, Colorado. Dams in Colorado Buildings and structures in Larimer County, Colorado Buildings and structures in Rocky Mountain National Park Dam failures in the United States Disasters in Colorado Estes Park, Colorado 1982 in Colorado 1982 disasters in the United States 1903 establishments in Colorado 1982 disestablishments in Colorado Former reservoirs