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<br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />- 17 - <br /> <br />B. Delineation of the floodplains on adequate topographic <br /> <br />mapping which reflects the existing channel situation, <br /> <br />for the range of recurrence intervals, using the f ture <br /> <br />hydrology. The floodplain Maps will yield information <br />about .the depths and limits of flooding. Estimates of <br /> <br />the flood velocities will also be required. In the <br /> <br />benefit-cost analysis, the future development patterns <br /> <br />will be overlaid on these theoretical floodplains to <br /> <br />assumed encroachment widths/and future flood damages will <br /> <br />be computed. It will be the reduction in this potential <br /> <br />flood damage that will make up the direct benefits for <br /> <br />each flood control alternative. <br /> <br />C. Aerial photographs which may be useful in the economic <br /> <br />analysis. <br /> <br />Other Data <br /> <br />A. Structural Data - Residential and Commercial <br /> <br />For Little Dry Creek structural data were obtained from <br /> <br />computer printouts of the County Assessor's records of <br /> <br />properties located in and around the floodplain. The <br /> <br />data obtained for each property were: <br /> <br />Legal description. <br /> <br />Property address. <br /> <br />Assessed valuation of structures. <br /> <br />~ Leonard Rice Consulting Waler Engi~eers, Inc. <br />