Jess, J. M., 1970. Use of Groundwater for Irrigation, Seward County, Nebraska (WSP-25): 24 pp., size 8.5" x 11". Description: An extensive survey of irrigation practices was conducted in Seward County before and during the 1968 irrigation season. This survey was to determine the hydrologic characteristics of the principal aquifer, the quantity of groundwater pumped during the 1968 season, and the economic effects of groundwater irrigation. This report discusses the results of the later two items.