Amended Work Plan Kiowa Creek Watershed

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REVISED EVALUATION SUPPLEAENT TC, THE WORK PLAN FOR THE KIOWA CREEK WATERSHED PROTECTION PROJECT ELBERT AID EL PASO COUPuTIES, COLOR00 The preliminary work plan for the Kiowa Creek Watershed Protection Project was completed in June of 1954. Final work plan was submitted in September with tentative evaluation supplement attached. The evaluation plan as com- pleted wao presented as a supplement to the Work Plan of the Kiowa Creek Water- shed Protection Project in December of 1954. This present revision brings the evaluation plan up to date (January 1, 1956) and supersedes all others. O BJECT IVE The broad objective of this evaluation plan is to evaluate the effects of the watershed protection program in both physical and economic terms. To do this properly it will be necessary to measure various physical and econ- omic factors within the watershed and the changes brought about in them by the application of the program. This will include changes in run -off characteristics, flood and sediment damages, and crop and forage production resulting from soil and water conservation improvement. The specific objectives of the evaluation studies will be to test the effec- tiveness of the works of improvement and the annual benefits which are estimated as follows: "A'' Measure B,�er efits Reduction of floodwater and sediment damages 5 >31,230.00 I-lore intensive use of flood plain land 21,980.00 Conservation benefits 780.00 Sub -total $53,990.00 "B" Measure Benefits M deduction of floodwater and sediment damage 10 Conservation benefits 46,180.00 Sub -total 57,080.00 Total all measures $111,070.00 Because this watershed is representative of a large area of steep, semi -arid low value land occurring in western Kansas and Nebraska, and throughout Colorado, Wyoming, Utah, and New Mexico, and because the planned "A" measure program is unique in that it consists mainly of numerous, comparatively small detention reservoirs providing for run -off detention on a watershed basis, it is felt that evaluation studies of the Kiowa Creek Watershed Protection Project should be especially intense, precise, and accurate. The Watershed Program is being installed chiefly to reduce floodwater and sediment damages incurred because of flash floods arising in the headwaters area. The evaluation will attempt to obtain a record of futture floods, the damage that occurs, and the reduction of damages that results from the improvement of watershed conditions. This project, with seven others in the United States, was selected for intensive evaluation study in November of 1953. The planned study is now authorized on an enlarged and intensified basis in comparison with the originally planned study.