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Foidel Creek Mine C-82-056 2021 Annual Hydrology Report <br /> Fish Creek: <br /> Nine monitoring sites are located within Fish Creek. Site 16A replaced site 16 in 2001 and is <br /> located upstream of the Fish Creek Borehole discharge site 115. Historical data for site 16 may be <br /> found in previous AHRs. Site 307 is located approximately one mile downstream of the Fish <br /> Creek Borehole mine dewatering site. Site 302 is located approximately two miles downstream of <br /> the Fish Creek Borehole mine dewatering site. Site 305 is located upstream of the Fish Creek <br /> Tipple. Site 27A is located immediately upstream of the Fish Creek Tipple discharge (a.k.a. <br /> CDPS discharge site 62). Site 1003 is located downstream of Fish Creek Tipple site 62. <br /> Three relatively new surface sites were added in conjunction with the new Fish Creek Alluvium <br /> well sites (AVF-13, AVF-14, and AVF-15), in order to evaluate potential subsidence impacts in the <br /> area. These are surface sites SW-13, SW-14 (both added in August 2001), and SW-15 (added in <br /> June 2002). These sites require quarterly water level measurements (March through September), <br /> and semi-annual field parameters and water quality sampling. <br /> As with the Foidel Creek sites, typical flow patterns were exhibited at these sites with spring runoff <br /> periods accounting for the peak flows observed. In general, an inverse relationship between flow <br /> and field conductivity was evident. 2021 water quality parameters for these sites were generally <br /> within previously established ranges. <br /> Trout Creek: <br /> Three monitoring sites have been established on Trout Creek. Site 301 is located on Trout Creek <br /> above the confluence with Middle Creek. Site 69 is located on Trout Creek below the confluence <br /> with Middle Creek. Site 1005 (established in 1994) is located downstream of the confluence with <br /> Fish Creek and is monitored in conjunction with alluvial well 008-AT-1. <br /> Typical seasonal flow patterns were observed. Water quality parameters for these sites are <br /> typically within previously established ranges. <br /> Middle Creek: <br /> Site 29 is the only Middle Creek site monitored. Except for conductivity, the 2021 water quality <br /> parameters for this site were typically within the historic range, however, the September 9, 2021 <br /> TDS result was elevated relative to other samples from the sites. The field results during the <br /> 23 <br />