Investigating Ground and Schellpeper, J. J., Harvey, F. E. 1999. Surface Water Relationships in the Republican River Basin of Nebraska Using Water Chemistry and Environmental Isotopes (OFR-57). 94 pp., size 8.5" x 11". Description: In fulfillment of a cooperative agreement between the Conservation and Survey Division and the Nebraska Department of Water Resources. There are three objectives of this paper: 1) assess the chemical and isotropic characteristics of the groundwater and surface water; 2) evaluate the direct impact of a pumping well on the surface water; and 3) examine the mixing relationships between the ground and surface waters. Out of print, unbound copy available.