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<br />. <br /> <br />Arkansas River <br /> <br />. <br /> <br />. <br /> <br />The hydrologic analysis for the Arkansas River was based on a <br />stastical analysis of gaging station records as recommended by <br />WRC Bulletin l7. The hydrologic analysis was adjusted to reflect <br />the effects of Pueblo reservoir which became operational between <br />1970-1975. The Arkansas River hydrologic analysis therefore, <br />fulfills the requirements of the FIRM. <br /> <br />. <br /> <br />. <br /> <br />The COE hydraulic model was reviewed and found to be correct <br /> <br />except for a minor problem at Section 4010. The HEC-2 model was <br /> <br />modified to correct the problem at Section 4010 and flood <br /> <br />elevations recalculated. <br /> <br />. <br /> <br />. <br /> <br />The flood profiles were redrawn to reflect the minor changes. <br />There was no resulting change in the flood boundaries. The <br />diversion dam for the Booth Canal downstream of the confluence <br />with Fountain Creek was field inspected. The majority of the <br />structure was found to be inplace however, the dam has been <br />breeched and is no longer in use. The present condition of the <br />structure was determined to have neglegible effect on the <br />previously determined water surface elevations. The existing <br />concrete slope paved flood wall was determined to have greater <br />than 3 feet of freeboard for both the lOa and 500-year events. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />-13- <br /> <br />. <br />