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2. Hydraulics (Con'd.) <br />Locations: (Priority 1) <br />a. Main stem from Waterton to Ft. Lupton. <br />b. Bear Creek thru metropolitan urbanized reaches. <br />c. Clear Creek thru metropolitan urbanized reaches. <br />d. Little Dry Creek - urbanized areas in Englewood and upstream. <br />e. Sand Creek - From mouth to just above Peoria Avenue. <br />f. Tollgate Creek - From Sand Creek confluence to just above <br />Quincy Ave. <br />g. Plum Creek in lower reaches (future urban development). <br />h. Big Dry Creek - lower reaches urban areas. <br />Status. Completion of studies under Priority 1 will follow <br />completion of discharge probability analysis under <br />hydrology. The necessary field surveys for required <br />channel and valley cross sections have been scheduled. <br />Field surveys should begin within two weeks. It is <br />expected that major progress will be made on the <br />hydraulic studies by July 1959, but that because of <br />necessary dependence on hydrologic elements conclusive <br />hydraulic eva•l,uatians may not be available much before <br />January 1960. <br />3. Economic Studies. <br />Acquisition of basic economic data which will lead to <br />establishment of average annual damages in flood problem areas <br />has been accomplished by four related methods. <br />a. Field surveys of type, value and characteristics of property <br />in the general flood plain of problem areas. <br />b. Acquisition of basic assessment values of flood plain <br />properties from tax assessor records. (Sampling basis - <br />with sample density differential for urban and rural areas.) <br />c. Evaluation of residential property values in the Denver <br />metropolitan area on the basis of real estate sales <br />offerings. <br />d. Aerial photography analysis to establish type, density and <br />location in flood plain of urban property and related <br />topographic analysis to establish elevations of specific <br />properties in relation to the stream. <br />4. The major portion of the urban economic data acquired in the <br />Denver metropolitan region has been codified on punch cards <br />for machine analysis and for future correlation with hydrolo- <br />gic and hydraulic data currently being compiled. However, <br />data on industrial property, public property and utilities, <br />and transportation facilities subject to flood damages must <br />- 2 - <br />