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<br />completed on Beaver Creek because of the potential for floodwaters <br />to spill from the Badger Creek basin into the Beaver Creek basin, <br />at points near the Burlington & Northern railroad tracks and State <br />Hiqhway 6-34. <br />The normal annual precipitation in the Beaver Creek and Brush <br />area is approximately 13 inches per year. Ir,cluded as part of the <br />precipitation is snowfall of 26 inches per year. The mean annual <br />temperature in the Brush area is 48.9 dE"grees, ranqing from a nor- <br />mal average temperature of 74 degrees in July. <br />Veget,ation in the basin consists of farmland crops in tohe <br />lower reaches and prarie grasses in the upper reaches. The pre- <br />dominant soils in the basin consist of sand and sandy loam soils <br />and, .to a lesser extent, silt loam and some clay loam. <br /> <br />S.tudy Reach Description <br /> <br />The study reach is centered <br />ext:ends four miles upstream from <br />Plate 2, shows the study limits. <br />The normal low flow channel for Beaver Creek meandeJ:s tol:.rough <br />the study reach traversing approximately 7.4 miles through the <br />4-rnile reach of flood plain. The topography adjoining Beaver <br />Creek is very flat to the west but qui b:~ steep to the east. <br />'rhrough the study reach, six major roads and railroads crO:5S the <br />creek. Two of these facilities, the Burlington Northern railroad <br />directly east of town and County Road DLD" one-half mile south of <br />town, significantly affect flood flows ",ithin the flood plain. <br />In addition to the road and railroad crossings within t,he <br />flood plain, the City of Brush is located in the flood plain area. <br />'rhe road and railroad embankments as well as the buildings and <br />streets in town serve as obstructions tCl the orderly passaqe of <br />flood flows through this portion of Beaver Creek. Through the <br />study reach, the main channel is small, inadequate and restricted <br />by the natural vegetation, limiting the effectiveness of the <br />cha,nnel. <br /> <br />east of the City of <br />Interstate 76. The <br /> <br />Brush and <br /> <br />Index Map, <br /> <br />1'he primary obstructions to flood flows throuqh the study <br />area are the brush and vegetation growing alonq and within the <br /> <br />-6- <br />