A 36" x 24" poster including topographical and watershed map of the state of Nebraska and inset maps showing: Density of Active Registered Irrigation Wells - January 2008 Groundwater-Level Changes - Predevelopment to Spring 2007 Generalized Nitrate Levels in Wells Sampled, 1974 - 2006 Mean Annual Precipitation, 1971 - 2000 and Generalized Gaining/Losing Streams DNR Designated Hydrologically-Connected Fully and Overappropriated Basins, Subbasins and Reaches, July 2008 River Basins with Coldwater and Warmwater Stream Designations Generalized Atrazine Levels in Wells Sampled, 1974 - 2006 Threatened and Endangered Waterbirds and Fish High Plains Aquifer, Saturated Thickness, 1997 Estimated Water Use in Nebraska in 2005