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Ointrict divertp.d the creek Rlong the we~tern edge of town via a leveed chnl1nel wi th a 150 foot bot tom width and 1 on 3 side slopes. The 10\""T reach of the levees which washed out during the 1965 flood Were reb"i It by the Corps of Engineers under Public Laws 875 and 99. Chan- n"l capllcity of thc cliversion is about 8,000 c.Ls.,lI flow expectecl to OCCllr once in 9 ye8rs. Two Butte Reservoir is located on Two Butte Creek ~bout 47 miles upstream of its confluence with the Arkansas River. The facility, comprised of a l06-foot high earthfill dam and 49,900 acre-foot capa- city reservoir, was completed in 1918 for irrigation purposes. The state of Coloraclo now owns and operates the reservoir for fishing and recreation purposes. Two small irrigation reservoirs, Romer on West Horse Creek and Wood on East Horse Creek were constructed about 4 miles upstream from Holly. However, both dams have washed out and were not rebuilt . FLOOD PROBLE~lS The flood problem at Holly is the flood potential associated with Wild Horse Creek, Two Butte Creek and the Arkansas River; Holly is protected from floods originating on the Arkansas River above John Martin Dam, 50 miles upstream. However, several tributaries below the dam have the potential to produce large magnitude floods on the main stem at Holly. The most serious flooding to occur was in 1965 when the Two Butte Creek and the Arkansas River flows combined wi th flows from Wild !lorse Creek and flooded the entire town to a depth of eight feet, causing damage estimated at $1.5 million. Other Arkansas River flows known to have caused damage at Holly occurred in 1908, 1921, 1923, 1925, 1929, 1936, 1942, 1949 and 1951. Hild Horse Creek itself has not been a problem subsequent to being diverted along the western edge of town. However, a potential threat exists since the upper reach of the diversion is not leveed. OTHER NEEDS The municipal and industrial water supply for Holly is derived from wells and is generally of good quality and in adequate supply for future needs. Existing surface flows of the Arkansas River are not accept- able for municipal use due to permanent hardness. Irrigation water in the Holly area is derived from the surface waters of the Arkansas River und lurge capacity wells in the valley alluvium. Due to the short und und"pendable supply of surface irri- cation wllter the use of wells has intensified to the point where r.round- water mining is hein~ experienced and could utlimately cause severe probl,,",.. A portion of the irrigation water is supplied to tIll! Hildy area Vill the !luffalu Canal, which crosses Wild Hone Crc(\~ north of Hully. Another cnoal, Holly !litch, formerly used for irrir.ation wnter supply is nbnndoncd and bloded ut wild Horse Creek. 6 ~