Amended Work Plan Kiowa Creek Watershed

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- 2 - COOYCRATIO?N j%ITH OTPER. AGEFCIES The original plan was discussed with representatives of the U. S. Geological Survey, U. S. Weather Bureau, the State Engineer of Colorado, the Production Economics Branch of ARS, the Corps of Engineers, the Extension Service, the Colorado Water Conservation Board, the Forest Service, and Colorado A & M College. It was developed by pooling ideas of all interested fact finding agencies and those agencies which have responsibility for carrying out the project. Present changes, as reflected herein, affect only the Weather Bureau and USGS and have been agreed upon with them. GE?''ERAL AFFA IN WHICH BEE- TEFITS A EXPECTED TO ACCRUE Benefits from reduction of flood water and sediment damage and from changes in the water table are expected to occur on the bottom lands along the chan- nels below retarding and sediment control structures throughout the water- shed. The area of expected benefits gradually widens downstream from the headwaters and is most intensive along the main stream channel between the towns of Elbert and Kiowa. The benefits within the East Kiowa sub- watershed can be expected to be higher than those of West Kiowa Creek. There is no principal structure or series of structures and, therefore, no concentrated area of especially high benefits is expected. Benefits from more intensive use of flood plain lands will accrue along the main channel and well into the sub- drainages. Conservation benefits are expected to accumulate throughout the area as a result of land use adjustments and conservation measures installed through farmer - district individual farm conservation programs. The largest part of the "off- site" benefit (flood and sediment reduction) is expected to result primarily from the " A " measure program. Reduction of "off- site" damages by "B" measures will be incidental to land treatment conservation benefits. EODU IPMEFT NE EDED TO NP EAS URE, THE EFFECT OF THE PRCGRO1 Measuring devices are needed to measure precipitation in the watershed, stream flow, and sediment load so that hydrographs can be drawn, relation- ships can be ascertained between precipitation intensity, run -off, and peak and volume flows, and a basis furnished for determining damage reductions. Recording rain gages are needed in sub - watersheds above detention reservoirs selected to measure flood volumes. Crest gages will be installed above and below these structures as well as at other selected points in stream channels. Standard rain gages will be installed at strategic locations throughout the watershed. Two stream flow gages are installed and two total load sediment stations will be installed. Irrigation and domestic wells will be selected along the main stream bottom lands to observe ground water changes. Water stage recorders will be installed in the selected reservoirs. The following equipment is in place or will be installed, as shown on the attached map.