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TOWN OF PIERCE POST OFFICE Box 57 PIERCE. COLORADO 80650 R!CI1VID December 19, 1989 DEe 1 8 '89 COLORADO WATER CONseflVA,110N BOARD Mr. Darrell Deterding Director of Structures Design Union Pacific Railroad 1416 DOdge Street, Room 1000 omaha, Nebraska 68179 Dear Mr. Deterding: RE: FLOOD IMPROVEMENT PROJECT, PIERCE, COLORADO The Town of pierce is frequently flooded due to intense summer thunderstorms. We have included for your information, newspaper articles concerning floods we experienced in 1935, 1965, and 1987. Our town has also been flooded in 1917, 1933, 1951, 1954, 1961, 1972, 1974, 1977, and 1988. Floodwaters enter the Town along u.s. Highway 85 and the Union Pacific Railroad. The extent of flooding has been determined by the Federal Insurance Administration and summarized on the "Flood Boundary and Floodway Map", a copy of which is also included for your review. In December of 1988 the Colorado Water Conservation Board conducted a feasibility study to investigate and recommend flood control and drainage improvements for our town. Based upon their work a system of proposed levees and channels has been identified as an economical solution to our problem. These improvements are outlined on the enclosed Flood Boundary Maps. The historic Spring Creek drainageway is located approximately one- half mile east of Pierce. Due to the limited capacity of existing structures north of Town and the embankments for the highway and railroad, floodwater is diverted into Pierce. During a major flood, water runs along the east side of the railroad as well as across the railroad from the west side of town. The proposed improvements will route the majority of the flood runoff through the Town along the railroad/highway corridor. The floodwater dissipates in approximately eight to ten hours after reaching the Town of Pierce. Included for your review are 10- and 100-year flood profiles for the