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<br />Bed Material <br /> <br />D~6 ' <br />Descrip~ion <br /> <br />DSD 0,014 TCnTI, DS" <br />Sandy loan first 2.8 ft of depth. Then <br />same material as in the stream bed. <br />Overbank Area Condition <br />Trees, brush and grass back <br />50 ft high with timber. The <br />downstream for about a mile <br />site. <br />Bank Condition <br />Stable, no signs of erosion, sandy loam with grass above <br />the washline which is at about a height of 3 ft above <br />the bed, The brush and tress grow right to the bank. <br />The bank, if disturbed, will need to be ripraped and <br />will need riprap above, through and below the bridge. <br /> <br />to a gravel terrace that is <br />conditions continue <br />downstream of the bridge <br /> <br />Left Overbank <br />Dimensions <br />Top of bank above channel bed <br />Length of overbank area <br /> <br />Q'DD <br />Discharge = 17,700 cfs <br />Average depth = 2,8 ft <br />Average velocity = 3,38 ftls <br />Depth at abutment= 4,8 ft <br />Bed Material <br />D16 ' <br />Description <br /> <br />= 7 ft <br />= 1,870 ft <br /> <br />DSO 0.014 mn, De.:. . ?:!..:-st 2.7 ft <br />Sandy loam first 2,7 feet. Then same as <br />material under stream channel. <br />Overbank Area Condition <br />Natural levee with trees, brush and grass back from the <br />channel for about 30+1- ft, Then ttere is a field that <br />is fairly level. The field is lower than the natural <br />levee,The left side of the field ends at a gravel <br />terrace over 100 ft high with timber. The conditions <br />continue downstream for about a mile downstream of the <br />bridge site. <br />Bank Condition <br />Same as the right bank. stable, no signs of erosion, <br />sandy loam with grass above the washline which is at <br />about a height of 3 ft above the bed. The brush and <br />tress grow right to the bank. The bank if disturbed <br />will need to be ripraped. An will need riprap above, <br />through and below the bridge, <br /> <br />61 <br />