Laserfiche WebLink
1 <br />1 <br />SURFACE WATER FpNITORING <br />Two locations on Foidel Creek in the vicinity of the mine portal are monitored. <br />Site 14 is upstream of the portal and upstream of the effects of the surface <br />mining activities. Site 2005/8 is a short distance downstream of the portal: <br />water quality samples are collected at Site 8 and flow readings are taken at site <br />2005. Three locations on Fish Creek are monitored. Site 1001 is located upstream <br />of where Fish Creek enters Twentymile Park. It will be replaced by Site 16 which <br />is located immediately downstream of where Fish Creek enters the south end of <br />Twentymile Park. Site 1002/26 is located on Fish Creek about one-half way through <br />its reach in Twentymile Park. Sites 26 and 1002 are immediately adjacent to each <br />other and water quality samples and flow rates have been measured at both sites. <br />Site 1002 will be the primary site in the future. Site 1003 is located in the <br />north end of Twentymile Park approximately 1-1/2 miles upstream of the confluence <br />with Trout Creek. <br />Flows <br />The streams are gaged at all five locations. A controlled section is used to <br />measure stream flow at Site 14. Due to the size of the stream at the other <br />locations, they must be rated instead of using the more accurate controlled <br />section such as a flume. Plots of the historic flow measurements on Foidel Creek <br />are presented on Figures 19 and 20. Plots of the historic flow measurements on <br />Fish Creek are presented on Figures 21 and 24. The data shows the typical <br />seasonal variation with a rapid rise and fall of flow rates during spring runoff. <br />Site 14 usually does not flow during the fall and winter because it is at the top <br />of the drainage. The flow at Site 2005 is maintained essentially year-round by <br />the discharge from the underground mine and discharges related to the surface <br />mines. Zero flows indicated for Sites 2005, 1001, 1002/26, and 1003 during the <br />winter actually are usually due to the streams being frozen, preventing a <br />measurement of the the flow. The maximum and minimum flows for each site are <br />presented on Table 29. The data indicates a fairly good correlation between <br />upstream and downstream stations on each stream. As expected the upstream <br />stations generally had a lower flow than the downstream stations on each stream. <br />