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down the main channel which increasec the severity of flooding. Circled numbers on the basin map indj,cate approximate locations and amount of rainfall as reported by nearby residents. Comparison of Storm Data The table and graph in figure 2 were developed from data presented in the U.S. Weather Service pulication "NOAA Atlas 2, precipitation-Frequency Atlas of the We";tern United States, Volume III-Colorado." This table indicates that Milliken may have received a 100-year, 1-hour duration storm if the rainfall averaged 2.5 inches over the entire basi.n. A 2 inch rainfall over the entire basin represents around a 35-year, 1-hour duration storm. Thus, t,he flood outli.rws and problems identified in this report should fairly well indicate the hazards and problem areas which need to be correcb~d. No estimated discharge values a):'e available as clean-up operations have eliminated the high "later marks necessary for such measurements. Flood Hazards and Drainage Problems The flooding on June 3, 1981 identified 3 main drainaqe problems for Milliken, Colorado. One drainage problem an~a is located on the east side of tOwn bet'"een the Union Pacific Rail road Tracks and Cora Avenue. A nond up to six feet deep can develop during storms as indicated in figure 3 due 1:0 inadequate culvert capacity under the union Pacific Railroad. Water continues to pond in this area until it can breakout over Dorothy Avenue and flow west, back towards the )~ola Park tributary or washes out the U.p. tracks. This over.'Elow alo:o contributes in part to the flood problems experienced by some small business near the intersections of Frances and "l ighway 60. Adding to the problem is the load of fine sediment::, and fertilizers the waters pick up after washing predominately aCII~ icul t ural lands. It should also be noted that simply improv ing the culvert wi t'lout increasing the drainage ditch capacity all the way to the river won't solve the total problem in thi:3 area but: would merely transfer it farther downstream. The second drainage problem area 1:3 located along the unnamed tributary running through Lola Park. As indicated in the pictures taken by photographer Karen c;chulenburg of the Loveland Daily Reporter-Herald the water pond" behind and then overtops Forest, Elm and Broad Streets before d iv iding. Flood waters then either flow along the south side of Highway 60 (Broad street) to the 1'hompson and platte ditch or ovedlow Highway 60 and run down through the trailer courts and into t~e Thompson and platte ditch. If the Thompson and Platte ditch overtops the flood waters then flow northward and a'lain pond in the open areas just south of the Great Western Railroad yards and there either evaporate or overflow the tracks and proceed on down to the -4""