The spatial and temporal distribution of selected physical and chemical surface-water-quality characteristics were analyzed at stream sites throughout the Dolores and San Juan River Basins in southwestern Colorado using historical data collected from 1990
Miller, Lisa D. ldmiller@usgs.gov,Schaffrath, Keelin R.,Linard, Joshua I. jilinard@usgs.gov. Assessment of historical surface-water quality data in southwestern Colorado, 1990-2005. 2013-01-01.