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<br />' These data are compared with the original baseline data to determine if changes have occurred. <br />The baseline data is reported in the 'Deserado Mine First Annual Hydrology Report', 1985. <br />' As during the previous reporting period, stream flows were rare, due to the low incidence of <br />' thunderstorms which cause run off events. The snow melt run off was also minimal. The <br />northwestern Colorado region continues to be the most severely affected portion of the State by <br />the drought of recent years. <br />' One station in lower Red Wash (SW1-1) recorded and sampled three flow events. No events <br />were recorded at the upstream station (SW24-1), indicating the localized nature of precipitation <br />in the area. The three flows detected by SW1-1 had an average total dissolved solids (TDS) <br />content of 4351 mg/I. These three flows originated between the two stations in areas containing <br />' outcrops of the high salt content Wasatch formation. <br />' As in all previously monitored water years, no discharges occurred from the Refuse Area ponds, <br />and therefore, no slows were measured or sampled at SW23-1 during this water year. <br />' During this reporting period, one flow was recorded at SW11-1 near the mouth of Scullion Gulch. <br />This flow was the sixth event recorded during the past 60 months. The total dissolved solids <br />(TDS) in the sample was 1084 mg/I. The TDS level is considerably lower than seen in prior <br />years. <br />' 2.2.2 Ground Water Monitoring Data Groundwater monitoring data consists of water levels <br />measurements. Tabulation of the raw data is included in Appendix C. Hydrographs for the 15 <br />' stations (monitor holes) from which water level data was collected are included in Appendix D. <br />Table 2-2 is a statistical summary of the water level data. <br />' 2.2.2.1 Alluvial Water Level Data Water level data has been collected from the one remaining <br />original alluvial aquifer monitoring hole (QAL-5) and the Refuse Disposal Area alluvial monitoring <br />' hole (RM-1). Five other alluvial monitoring holes were inundated by Kenney Reservoir. Ahydro- <br />graph of the water level data for OAL-5 is contained in Appendix E. The statistical summary of <br />the water level data for QAL-5 is also included in Table 2-2. No water has yet been detected <br />' in RM-1. The locations of these monitoring holes are shown on Plate 1 in the pocket of this <br />report. <br /> <br />t <br />t 6 <br /> <br />