Field Examination Report Proposed Weldona Valley WP Project

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i1 IFLD EY! \I!INATIO °ti REFURT PROPOSED l:'ELDONA VALLEY WP PROJr.CT Janu= -y 9 - 11, 1956 I•'.e of P Ed Mason and Cliff Van Dorn of Forest Service, Will McCorkle, Charles Mitchell, K. L. Carson, Jack H&U, and G. E. McCrirranon of the Sail Conservation Service, Art Eustis of Federrl Fish & I-ildlife Sex-Tice, Bob 'Evans of State Game and Fish Department, Fred Doydaten of State Water Conservation Iloard. R - or in narrative form is prepared Jointly by all members of the party with the exception that Fred boydaten could be present one day only and that Messrs. Eustis and Evans will present reconnendazions at a later time dealing with biology aspects. Size and Lo cation of Wa tershad The proposed'w;eldona Valley Project includes 42,000 acres Located. in Yorgan County, Colorado. The proposed area prevently is only partly in the area of the Morgan Soil Conservation District, about 20,000 acres being in the district. The chairn of the board of supervisors states that the balance of the area will shortly ba included within district boundaries by petition process under Colorado 12.w. 1. Watershed Characteristics a. Soils and topography. The soils of the watershed are formed over Fox Hills sandstone and Pierre shales. In the native range area the surface soils are moderately coarse textured and for the most part are sandy lo=s. These soils are in general moderately deep. Subsoils are moderately coarse textured or sandy and stab -soil permeability is generally rapid. Topography is hilly to rough- broken and external drainage is rapid o.- excessive. Erosion is moderate to rapid. The soils of the 9,000 acres of irrigated land are sandy loans, mostly deep having good internal drainage. Topography is level to gently undulating.