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<br />Pawnee Creek. Reach I is essentially the portion of the' City of Sterling that is north of Iris Drive. <br />Reach II extends from Iris Drive south to the northern edge of Riversid,e Cemetery. Reach III includes <br />the Riverside Cemetery, and extends south to tht: Pawnee Creek bridge under HWY 6, then west along <br />Pawnee Creek to CR. 33. Reach IV extends west along Pawnee Creek from CR. 33 to CR. 29. <br /> <br />The basis of direct damage for Reach I is the "Floodplain Information and Drainage Plan for Sand <br />Creek and the Pawnee Creek Overflow at Sterling, Colorado" prepared in 1983 by Charles Leaf and <br />Resource Consultants. The primary purpose of this report was to define IOO-year floodplains <br />throughout the City of Sterling. Consequently, floodplain analysis was conducted City wide, and the <br />Pawnee Creek overflow was just one part of the analysis. Flood pe:ak flows were detennined for <br />several frequency storm events, and then hydraulically routed using HEC..2. Average depths of <br />inundation of buildings was estimated, and total damage determined using damage versus depth <br />curves. Damages from the 1983 report were updated to 1998 dollars using inflation factors published <br />by the Colorado Department of Revenue. <br /> <br />Direct damage for Reach II utilize:d the same procedure:s as for Reach I in that the: same ratios of <br />dan1age per acre for the various frequency storms studie:d were appli,~d to the flooded area. Direct <br />dan1age for Reaches II and IV are primarily loss of crops and damage to roadways/railroads. Table 16 <br />presents the estimated damage for flood events along Pawnee Creek: <br /> <br />I1I-38 <br />