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Final West Elk Mine 2005 Annual Hydrology Report 9 <br />J <br />3.1.1 Upper North Fork Drainage Basin Stuface Water Monitoring Stations <br />3.1.1.1 Deep Creek <br />Deep Creek is a perennial stream that drains the Box Canyon panel area. The Upper Deep Creek <br />monitoring station is located up-gradient of the Box Canyon mine panel area and the West Flatiron <br />LBA. The Lower Deep Creek monitoring station is down-gradient of the SE mine panel area and <br />is directly east of mine Panel 14 (Map 2). <br />3.1.1.2 Raven Gulch <br />Raven Gulch is a perennial stream that drains the Box Canyon panel area. The Upper Raven Gulch <br />monitoring station is located directly east of the Box Canyon mine panel 17. The Lower Raven <br />Gulch monitoring station is down-gradient and directly north of the NE mine panel area (Map 2). <br />3.1.1.3 Box Canvon <br />Box Canyon is an ephemeral stream drainage. The upper reach of the drainage is typically dry and <br />the lower reach of the drainage only flows during storm events and during the spring months in <br />. above average precipitation years. The Box Canyon monitoring station is located at the mouth of <br />the drainage and was established to monitor the area down-gradient of the Box Canyon panel area <br />(Map 2). <br />3.1.1.4 North Fork Uooer <br />The North Fork of the Gunnison River (North Fork) is a major perennial stream that drains the <br />northern mine area. The North Fork Upper monitoring station is located up-gradient of the mine <br />facilities area and up-gradient of the mine discharge points. The underground mine water <br />discharge flows into Sylvester Gulch then into the North Fork. The mine surface water runoff is <br />treated and routed to holding ponds and is then discharged to the North Fork, if necessary. All of <br />the mine water discharge occurs between the North Fork Upper and North Fork Lower monitoring <br />stations. <br />3.1.1.5 Svlvester Gulch <br />I• <br />Sylvester Gulch is an intermittent stream that drains the north central mine area. All the active <br />surface facilities of the mine are located within the Sylvester Gulch drainage basin area including: <br />the main road to the mine facilities from Highway 133, mine waste dump, mine shop and offices, <br />mine portal, mine ventilation shafts, and the mine water discharge facility. The three monitoring <br />September 2006 HydroCeo, Inc. <br />