Includes bibliographies.; v.1. Summary and conclusions by M. E. Garnsey.--v.2. A study of the statistical predictability of stream-runoff in the Upper Colorado River Basin, by P. R. Julian.--v.3. Some general aspects of fluctuations of annual runoff in the Upper Colorado River Basin by U. M. Yevdjevich. Published by Civil Engineering Section, Colorado State University, Fort Collins.--v.4. Probability analysis applied to the development of synthetic hydrology for the Colorado River, by M. R. Brittan.--v.5. Analysis of precipitation data in the Upper Colorado River Basin, R. A Schleusener and L. W. Crow. Published by Civil Engineering Section, Colorado State University, Fort Collins.