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<br />00151.1. <br /> <br />42. <br /> <br />., <br /> <br />CURRENT <br />GROUND WATER RESEARCH <br />at <br />COLORADO STATE UNIVERSITY <br />(l960 -61) <br /> <br />" <br /> <br />Morton \V. Bittinger, Assistant Civil Engineer <br />Colorado State University <br /> <br />MEASUREMENT OF WATER TABLE FLUCTUATIONS <br /> <br />It is the purpose of this study to determine the effect of pumping <br />upon the ground water levels in the state. This project has been in <br />existence since 1928 and has been expanded as funds permitted. At <br />present, some 250 observation wells, principally in the Arkansas and <br />South Platte basins, are measured semi-annually. The older records <br />dating back to before intensive pumping began are extremely valuable <br />now as fhe resource becomes more limited. There is need for expansion <br />of this project. <br /> <br />" <br /> <br />CLASSIFICATION AND EVALUATION OF GROUND WATER RECHARGE <br />NEEDS, POTENTIALS AND PROBLEMS <br /> <br />It is the purpose of this study to determine the various needs, <br />potentials and problems involved with artificial ground water-recharge <br />of the various ground water basins in the State of Colorado. Existing <br />information on ground water levels, geology, water supplies, and other <br />pertinent information is being brought together in helping make this de- <br />termination. This study involves no field work and is primarily a survey <br />of existing information and an evaluation of needs. <br /> <br />STUDY OF ARTIFICIAL RECHARGE IN PROSPECT VALLEY, COLORADO <br /> <br />It was the purpose of this study to take advantage of existing <br />artificial recharge operations to learn more about the mechanics of arti- <br />ficial recharge as well as the benefits derived therefrom. During the <br />winter and spring of 1959-60, the Henrylyn Irrigation District serving <br />Prospect Valley put approximately 10, 000 acre feet of water underground <br />purposely. This was done by allowing it to seep out of a leaky reservoir <br />stratigically located over the ground water aquifer and above most of the <br />200 irrigation wells in the valley. An observation well network was es- <br />tablished to trace the flow of the replenishment water and to determine <br />its benefits. The rate of intake of the water into the ground and rate of <br />