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<br />:,G.~ <br /> <br />" <br />'0'" <br /> <br />Riahts-of-Way <br /> <br />..:.:'" <br /> <br />Construction of project features would require acquisition <br />of privately owned lands and withdrawal of Federal lands. In the <br />1969 study, Owens Creek Dam and Reservoir required about 1,700 <br />acres of land, 1,660 acres of which would be Federal land <br />administered by the National Forest Service. The requirements <br />for acquisition of privately owned lands and withdrawal of <br />Federal Lands will be assessed and upgraded by the project office <br />if a phase II study is pursued. <br /> <br />Relocation of Existing Facilities <br /> <br />Construction of Owens Creek Dam and Reservoir would require <br />relocation of 1.9 miles of Forest Development Road No. 265, 1.5 <br />miles of Forest Development Road No. 268, and some Forest Service <br />fences and cattleguards. Relocation of the Curecanti-Hayden <br />transmission line will not be required as the line was <br />constructed so the towers would be above the maximum water line, <br />and the lines would span the reservoir; however, relocation of <br />1.3 miles of the service road would be required. <br /> <br />Desian Floods <br /> <br />Flood routing studies, using hydrographs of the maximum <br />flood infl~ws to the reservoir, were made to determine required <br />reservoir surcharge and spillway capacities. The following table <br />summarizes the full probable maximum flood (PMF) study results <br />prepared for this project. The full PMF hydrographs will be <br />required for design estimates for a high hazard structure over <br />100 feet in vertical height. <br /> <br />Owens Creek Reservoir <br />Battlement Mesa Project <br />Appraisal Level PMF Study <br /> <br />Flood <br />Type <br /> <br />Peak <br />( ft3/ s ) <br /> <br />Volume <br />(Ac-Ft) <br /> <br />Local Storm <br /> <br />39,900 <br /> <br />12,000 in 36 hours <br /> <br />General Storm <br /> <br />16,200 <br /> <br />26,000 in 96 hours <br /> <br />These flood hydrographs were prepared using the best <br />available information, primarily from the previous flood studies <br />completed in 1965, and from the Vega Dam PMF study completed in <br /> <br />2 <br />