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West Elk Mine 2006 Annual Hydrology Report 13 <br />3.1.3.2 DrX Fork <br />• Dry Fork is an intermittent stream that is tributary to middle Minnesota Creek. The Dry Fork <br />drainage drains the northern portion of the un-mined SOD coal lease area and the area south of the <br />SE mine panels area adjacent to mine Panels 12, 13, and 17 (Map 2). The three monitoring <br />stations in Dry Fork: Upper, Middle and Lower Dry Fork, were established to monitor the effects <br />of mining along the drainage and to support the Minnesota Creek Augmentation Plan. All three of <br />these sites have 30-inch Parshall flumes and data loggers. In October 2005 the monitoring station <br />at Upper Dry Fork was relocated upstream to replace the previous site flooded by a beaver dam. <br />MCC initiated new baseline monitoring of this site in WY2006 and routine monitoring will begin <br />in WY 2007. The Lower Dry Fork Flume was replaced in the same location in October 2006 (WY <br />2007). <br />3.1.3.3 Poison Gulch <br />Poison Gulch is an ephemeral stream that is tributary to the Dry Fork and only flows in response to <br />storm events and spring runoff. Poison Gulch flows into Dry Fork between the Middle and Upper <br />Dry Fork monitoring stations. Poison Gulch is located in the SOD area. The Poison Gulch <br />monitoring station was established as a new monitoring location in the spring of 2005 (Map 2). <br />• Baseline monitoring of Poison Gulch began in May 2005 and included measuring flow, collecting <br />field water quality data, and collecting samples for laboratory water quality analyses from May <br />through October 2005 (CDMG, 2006). Routine monitoring of Poison Gulch is scheduled began in <br />WY 2006. <br />3.1.3.4 Deer Creek <br />Deer Creek is an ephemeral stream that is tributary to the Dry Fork and only flows in response to <br />storm events and spring runoff. Deer Creek flows into Dry Fork, upstream of Minnesota Reservoir <br />and downstream of the Middle Dry Fork monitoring station. Deer Creek is located in the SOD <br />area. The Deer Creek monitoring station was established as a new monitoring location in the <br />spring of 2005 (Map 2). Baseline monitoring of Deer Creek began in May 2005 and included <br />measuring flow, collecting field water quality data, and collecting samples for laboratory water <br />quality analyses from May through October 2005 (CDMG, 2006). Routine monitoring of Deer <br />Creek began in WY 2006. <br />3.1.3.5 Horse Gulch and East Gulch East of Horse Gulch <br />• Horse Gulch and East Gulch, East of Horse Gulch are ephemeral stream drainages that are tributary <br />to the Dry Fork and flow only in response to storm events and spring runoff. These streams flow <br />December 2007 HydroGeo, Inc. <br />