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26.3 inches, with 17.5 inches occurring during the winter months (November-April). Near Basalt, the average annual precipitation is approximately 17.2 inches, with 8.7 inches occurring during the winter months. Data on precipitation from the National Oceanic and Atmospheric Administration indicate that in the Aspen area, the 100-year, 24-hour storm would produce 2.6 inches of precipitation (Reference 6). Temperature and precipitation vary greatly from location to location and season to season within the drainage basin and are important variables. in flooding conditions. Above-normal spring temperatures can cause early and heavy flows on the Roaring Fork River. Records from the Aspen weather station indicate that the month of July has the highest normal total precipitation for the year at 2.06 inches. The month of March follows closely with 1.98 inches of total precipitation. The first month with a normal spring temperature above the freezing point is April, with a mean monthly temperature of 38.60F (Reference 6). Floodflows on the Roaring Fork River typically result from rapid melting of the mountain snowpack during the period from May to early July.. Snowmelt runoff may occasionally be augmented by rain. The snowmelt runoff is characterized by sustained periods of high flow and marked diurnal fluctuation. Examination of meteorological and climatological conditions and precipitation and stream flow records show that summer cloudbursts are not a great flood threat on these streams (Reference 6). Along the Eagle River, Brush Creek, and Eby Creek in the Town of Eagle, flooding normally occurs from May through September. Floods can occur from runoff, snowmelt, intense rainstorms and cloudbursts, or rainstorms augmented by snowmelt. Past floods in the Town of Eagle along both the Eagle River and Brush Creek occurred in June 1947, June 1957, June 1959, August 1965, August 1968, and May 1970. All these floods caused minor damage and erosion problems. There were no recorded or estimated discharges for the town (Reference 13). Along the Eagle River and Gypsum Creek in the Town of Gypsum, flooding usually occurs from May through September. Floodwater can occur as a result of snowmelt, intense rainstorms and cloudbursts, or rainstorms augmented by snowmelt. Past floods in Gypsum, along the Eagle River and Gypsum Creek, occurred in August-September 1963 and in June 1965. Both these floods caused minor damage (Reference 13). No recorded discharges are available for these floods. On June 7, 1957, the Eagle River flooded from a combination of snowmelt and rait1fall runoff. The 1957 flood had a discharge of 1,500 cfs, which is approximately equivalent to an 8-year flood event (Reference 13). From June 5 to June 26; 1969, flooding occurred along the Eagle River. The 1969 flood had a discharge of 800 cfs, which is approximately equivalent to a 2-year flood event. Power outages were caused by walls of water flowing down the Eagle River. Six inches of snow fell at the Town of Vail (Reference 13). On May 21, 1970, excessive snowmelt runoff caused water seepage under the foundation of the domestic water storage tank in the Town of Minturn. Efforts were made to save the foundation from washing out (Reference 13). Along the Eagle River and Turkey Creek in the Town of Red Cliff, flooding normally occurs from May through July, and is usually the result of snowmelt. No floods have been documented in the Town of Red Cliff along Turkey Creek or the Eagle River. However, when snowmelt flooding occurred elsewhere along the Eagle River, as it did in 14