Grant, Lewis O., authorSchleusener, Richard A., authorCivil Engineering Section, Colorado State University, publisher2019-07-092019-07-091961-04https://hdl.handle.net/10217/195676CER61LOG24.Reprinted from Proceedings, 29th Annual Meeting, Western Snow Conference, Spokane, Washington - April 1961.April 1961.An investigation of snowfall over the higher elevations of the Rocky Mountains in Colorado is being carried out by Colorado State University. This investigation is described and preliminary findings are discussed. The current field program includes daily snow observations of new snow at 65 sites spaced at about one mile intervals over Fremont, Hoosier, and Vail Passes. In addition, certain atmospheric observations are being made and seeding is being carried out with silver iodide generators from upwind sites on randomly selected days. Specific investigations being carried out consider: (1) the efficiency of snowfall observing devices; (2) the characteristics of representative snowfall observing sites; (3) snowfall variations with elevation and exposure for various weather situations; (4) concentrations of atmospheric ice nuclei and their relationship to snowfall; and (5) differences in snowfall and in atmospheric conditions between seeded and unseeded days. This is a continuing investigation in which the atmospheric observations are being expanded.technical reportsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Snow -- Colorado -- ClimaxText