arid West have become more and more acute. By 1910, many interstate streams had become over-appropriated by rapidly growing irrigation districts throughout the West. Continued expansion of the irrigated areas led to serious legal conflicts among various states in whose borders unplanned appropriation of waters had been going on without regard to the needs or future of other states through which the streams flowed. The years from 1910 to 1930 were characterized by endless stream of legal battles over the problems, but it was not until the widespread drouth conditions which developed in the 1930's that the problems became so aggravated as to draw attention of the general public. One of the problems has been of vital interest to the great irrigated farming districts of northern Colorado and Wyoming and has resulted in a serious threat to security of the meadow land ranchers in the Laramie Valley in Colorado. The problem involves the waters of the Laramie River which rises in the Medicine Bow ranges of North Central Colorado and flows