Evans, N. A., authorRobinson, A. R. (August Robert), 1921-, authorColorado State University, Department of Civil Engineering, publisher2017-11-282017-11-281957https://hdl.handle.net/10217/185083CER57ARR-31.Includes bibliographical references.For presentation at the Winter Meeting, American Society of Agricultural Engineers, Chicago, Illinois, December 1957.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.Drainage -- Research -- ColoradoText