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~~~~~~~ <br />~ ~ N 1 71985 <br />• <br />1984 HYDROLOGIC REPORT <br />MINED LAND <br />RECLAMATION DIVISION <br />October 1, 1983 through September 31, 1984 <br />Surface Water <br />Surface water sampling schedules changed this reporting year <br />due to a new NPDES permit and due to stipulations in the Mining <br />and Reclamation Permit issued by CMLRD July 13, 1984. Table 5-84 <br />tabulates part of the information collected for required surface <br />monitoring points. Attempts were made to take into dccount sampling <br />schedule changes. <br />Again this year creeks and rivers in the area recorded near <br />record levels. Flow on downstream Ward Creek continued to be mon- <br />itored at a Colorado Irrigation Division #4's recorder. The only <br />information on this point is water level on a creek section, no <br />~i • ~7 conversion to CFS. The uniformity of this flow subsequent to high <br />~~' runoff is due to irrigation management practices; a high priority <br />ditch is diverted just below the recording station. Monthly field <br />and quarterly full list quality continues to be taken at this site. <br />The 4' Parshall flume on upstream Ward Creek again had the creek <br />wash around it due to high water. The 9" Parshall flume on Williams <br />Creek was replaced by a 4' Parshall flume in May 1984. The quarterly <br />full list quality was dropped from the sampling schedule of upstream <br />Ward Creek and Williams Creek. <br />The total volume of water from these creeks was lower this year <br />but the average quality as measured by conductivity improved. <br />The sampling schedule for surface water associated with the mine <br />site was increased to weekly flows in addition to the monthly field <br />and quarterly full list quality. This change affected SP - A, B, <br />. C and D. The increased frequency of sampling resulted in better <br />