Water temperature and conductivity, Dinwooody Creek glacial watershed, Wind River Range, Wyoming, summer 2018

To investigate glacial controls on water chemistry, we instrumented 13 sites in the Dinwoody Creek watershed (Wind River Range, Wyoming) to monitor conductivity and water temperature during the 2018 summer melt season (late June through late September). The primary sites were located along a longitudinal gradient along Dinwoody Creek (labeled Din-1 through Din-7) starting near the toe of Dinwoody Glacier. Additional sites were selected to capture tributary streams draining glacial, non-glacial, and lake-dominated subwatersheds. At each site, we deployed a HOBO U24 low-range conductivity logger protected by PVC housing with 0.5 cm holes to allow water flow. We recovered water temperature data from all 13 loggers and conductivity data from 8 loggers. An air temperature logger was placed near Din-4 to compare with water temperature measurements. All loggers recorded measurements at 15-min or 60-min intervals. To check the accuracy of the conductivity loggers, we measured conductivity with a YSI ProDSS probe at each stream site when loggers were deployed and retrieved, with similar values (within a few µS/cm) across instruments. Conductivity measurements from the HOBO loggers were converted to specific conductance at 25oC using the “low range” data and temperature compensation method for freshwater lakes and streams options in the HOBOware conductivity assistant. Specifics of logger locations, deployment dates, and sample type are provided in on the first tab of the data sheet.