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I I I I I I I I I I I I I I I I I I I ~,' "; I; ') , ;i , Another main purpose of this study was to accurately map insofar as possible under the time constraints imposed pn the study, the ditch syst~s, : irrigated areas, and location of irrigation wells having a yield greater than 300 gpm. The stu~y area for "Reach 3" of the South Platte Valley is located between Denver, specifically Chatfield Dam and the Kersey gaging station. In addition, the Beebe Draw was included as a part of the study area. The ditches located between Chatfield dam and the headgate of the Burlington ditch in North Denver were excluded from the study upon approval of the Colorado Division of Water Resources. These ditches have undergone a change. in use over the years from primarily irrigation ditches to carrier ditches for cooling water. municipal water use, etc. SpeCifically. this report presents the following: 1. An accurate mapping of all ditch systems within the study area. 2. The location and identification of all irrigation wells with a yield greater than 300 gpm within the study area. These wells were mapped together wit~ the ditch systems. , 3. All 'irrigated areas under the ditch and well system were defined on the basic mapping provided by Falcon Air Maps. 4. The Various ditch systems within the study area were rated according. to the del ivery potential during drought years. and the ditches most seriously affected as tp the amount of water that could be diverted during droughts. . were identified. 5. General areas located along or near ditch systems which have the potential for, large well yields with a subsequent minimum impact on the flow of the South Platte River were identified. Specific wells were also indicated '. :'fi-'" <);; 'j, ~', {; _ l" I , ,t;-,;,'> 5..2'''.': 'lL, ,C