Brooks, Royal Harvard, authorColorado State University, Civil Engineering Section, publisher2017-09-282017-09-281960https://hdl.handle.net/10217/184137CER60RHB54.Includes bibliographical references (page 13).Also published in: Journal of the Irrigation and Drainage Division, v. 87, no. IR 2 (June 1961).A solution to the nonlinear differential equation describing unsteady flow toward equally spaced drains above a horizontal impermeable boundary is presented. The solution is compared with field data and a numerical solution. The solution was found to agree with the field data and the numerical solution when the drain spacing was large relative to the depth of drains.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.Drain-tilesDrainageGroundwaterFlow metersText