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....:~7:.,~.-c."'; r-'; '""'" W ~~ C"t.:l - IN1RODUCTION- In 1930 and 1931 a study of the proposed Caddoa reservoir was made by the state of Colorado in cooperatioft with the United States Corps of En~ineers. The summary of the results of such study was published by the Corps in the "308" Report covering the Arkansas river. In the 1930 and 1931 studies the operation of the reservoir was worked out on the basis of virtually pooling the water at the site of the reservoir and regulating it in accordance with an assumed ideal requirement for the irrigated lands in Colorado subject to benefit from the reservoir, Certain assumptions then were made as to the disposition of additional surplus water that would be made useable by the reservoir; one assumption that this water would go to the state of Kansas, and another that it would be used on new landS in Colorado. The published conclusions of the study did not indicate the benefil that would be derived by the individual canals in Colorado from the reservoir. Under the present irrigation laws of Colorado and adninlstrative procedure, the pooling of the water at the Caddoa reservoir probably could not bo accomplished, since it would involve the storing at times of direct flow water. Construction of the Caddoa reservoir by the Corps of Encineers has been approved, with th~ provision, however, that local interests shall furnish rights- of-way and take care of all damages resulting from the construction of the reservoir. It appears at the present VITi tine that such rights-of-way and damages will amount to some J5,OOO,OOO. Since the 1930 and 1931 studies were completed there have occurred several years of low water supply. The interstate situation between Colorado and Kansas also has changed in that a tentative agreement was entered into between the states