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BIIRFACE WATER MONITORING Four primary locations and one water level only location on Foidel Creek in the vicinity of Mine 1 are monitored. Station 14 is upstream of the effects of all mining activities in the area. USGS Station 09243800 (Station 800) is a short distance downstream of Station 14 and is downstream of the discharge pint for Pond A, which captures the drainage from a large area of spoil springs. Station 8 is a short distance downstream of Mine No. 1 and the Foidel creek underground mine portal. USGS Station 09243900 (Station 900) is located upstream of the confluence of Foidel and Middle Creeks. A water level only station (304) is located near well 008-AV-2 near the confluence of Foidel and Middle Creeks. Two primary locations on Fish Creek are monitored. Station 16 is located immediately downstream of where Fish Creek enters the south end of Twentymile Park. This station has replaced Station 1001 which was located upstream of where Fish Creek enters Twentymile Park. Station 1002 is located on Fish Creek about one-half way through its reach in Twentymile park and downstream of Mine No. 2. One water level only station (307) is located near Well 006-A2-3. One station on Middle Creek, USGS Station 09423700 (Station 700) located upstream of Mine No. 3, is monitored for flow and water quality. Two locations on Trout Creek are monitored. Station 69 is located below the confluence with Middle Creek to which Foidel • Creek is tributary. Station 301 is located upstream of the confluence of Middle and Trout Creeks. Flows Due to the size of the stream, they must be rated instead of using a more accurate controlled section, such as a flume. The USGS maintains continuous recorders at Station 700, 800 and 900. Plots of the historic flow measurements on Foidel Creek are presented on Figures 21 to 27 and Figure 46. Plots of the historic flow measurement on Middle Creek are presented on Figures 28 and 29. Plots of historic flow measurements on Fish Creek are presented on Figures 30 and 31. Plots of the historic flow measurements on Trout Creek are presented on Figures 32 and 33. The flow rate data are summarized on Table 30. The stream flow data shows the typical seasonal variation with a rapid rise and fall of flow rates during Spring runoff. Flows for Stations 16, 69, 1001, 8, 1002 and 1003 are not measured during the winter due to the streams being frozen. Station 14 on Foidel Creek often did not record flow in the creek during the fall, winter and summer because it is located near the top of the drainage. Foidel Creek flows tend to be maintained nearly year-round by discharges from the spoil springs feeding the sediment ponds. • 5