This report presents basic hydrologic data collected for part of a water-resources study and supplements an interpretive report which will be published separately. The report summarizes discharge data from 140 stream collection sites, contains tables of about 800 chemical analyses from 164 stream sites and 107 analyses from 91 abandoned flowing oil and gas wells including concentrations of major ions and trace metals. A table shows results of collections of macroinvertebrates at 136 stream sites. Seven flow duration curves are also presented.