This report is a compilation of hydrologic, water- quality, and meteorologic data collected in the vicinity of Newberry Volcano near Bend, Oregon. These data were collected, in cooperation with the Bonneville Power Administration, the U.S. Forest Service, and the Bureau of Land Management, to provide baseline data for identifying and assessing the effects of proposed geothermal development in the vicinity of Newberry Volcano. Types of data collected include ground-water levels, lake levels, streamflow, water quality, and meteorologic measurements. Sites that were monitored include: (1) two thermal wells in the caldera, (2) several nonthermal wells in the caldera, (3) four wells outside of the caldera, (4) Paulina Creek, (5) Paulina and East Lakes, (6) hot springs that discharge into Paulina and East Lakes, and (7) meteorologic conditions near Paulina Lake. Data are presented for the period summer 1991 through fall 1993. Water-quality data collected include concentrations of common anions and cations, nutrients, trace elements, radiochemicals, and isotopes. Meteorologic data collected include wind velocity, air temperature, humidity, solar radiation, and precipitation.
