An experimental manure slurry irrigation system was established at the University of Tennessee, Knoxville Cherokee Dairy to receive in a large holding tank, the rainfall runoff, wastewater, and most of the manure from the 125-cow milking herd. About 5.5 tons of dry manure per acre per month was applied by slurry irrigation to a 4-acre test pasture area with groundwells and runoff collecting facilities. Solids accumulation on the ground presented no problems. The quality of surface runoff samples from the test area varied greatly with runoff volume; however, the parameter concentrations were usually within those specified for raw surface water sources for public supplies.