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"Deluge of rain at Wray, starting Monday night about 7 p.m. with a cloudburst and continuing intermittently throughout the night. The Government rain gage registered 3.56 inches of rain, most of which fell within the first 30 minutes. The bridge fill on the lower part of Adams Street was washed out. Water went Over lower Main Street and flooded the ball diamond. No water entered any buildings and damage was confined mostly to the street at the north side of the Gardner Locker Building." "High waters covered the lower part of town from heavy rains. Water reached flood proportions west and south of Wray. The rain began at 4 a.m. at Wray and came in a downpour. 1.25 inches was registered at Wray. West and south the rain was much heavier with as much as six inches reported. Water reached the doorway at Bills Motor, the Wray Implement Company, Stedwells, and Gardners, but did not enter any buildings." "More than three inches of rain fall at Wray with up to 5 inches being recorded west of Wray. The lower part of the city park was under water. The machinery lot north of the highway, where the Wray Implement Company has a fleet of combines, was covered, but the machinery was settling (sic) out of the water." 2.4 Flood Protection Measures Planned effective flood damage prevention measureS have not been taken in Yuma County with regard to high flows occurring on the North Fork Republican River. Businesses and residences in the flood plain have raised floors as a result of past flood experiences and are effectively protected from low to moderate flooding, but no general protective measureS for extreme events have been accomplished. Flooding from hillside runoff, which had been a problem because of inadequate channels, has been relieved since 1961 by the completion of a watershed treatment project which included six retarding dams. These dams are located in or near the City of Wray on canyons that are tributary to the North Fork Republican River. The dams have a total capacity of 340 acre-feet and were designed to control the runoff from a 100-year rainfall Over the 3-square-mile drainage area above the structures (Refer- ence 4). The uncontrolled outlets through the structures were designed to limit the outflow to the downstream channel capacities. The project was designed by the U.S. Soil Conservation Service under sponsorship of the Hale Soil Conservation District and the City of Wray. 3.0 ENGINEERING METHODS For the flooding sources studied in detail in the community, standard hydrologic and hydraulic study methods were used to determine the flood hazard data required for this study. Flood events of a magnitude which 7