2014-07-11_REPORT - C1980007

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 7/11/2014
• From: Hydro Geo, Inc
• To: DRMS
• Annual Report Year: 2013
• Permit Index Doc Type: Hydrology Report
• Email Name: JRS
• Email Name: DIH
• Media Type: D
• Archive: No

West Elk Mine 2013 Annual Hydrology Report 18
3.1.3.4 Poison Gulch
Poison Gulch is an ephemeral stream that is tributary to the Dry Fork and only flows in
response to storm events and spring runoff. Poison Gulch flows into Dry Fork between
the Middle and Upper Dry Fork monitoring stations. Poison Gulch is located in the SOD
mine panels area. The Poison Gulch monitoring station was established as a new
monitoring location in the spring of 2005 and does not have a flume or data logger (Map
2). Baseline monthly monitoring of Poison Gulch was conducted from May through
October 2005. Routine monitoring (three times per year) of Poison Gulch began in WY
2006.
3.1.3.5 Deer Creek
Deer Creek is an ephemeral stream that is tributary to Dry Fork and only flows in
response to storm events and spring runoff. Deer Creek flows into Dry Fork, upstream of
the Minnesota Reservoir Flume monitoring station and downstream of the Middle Dry
Fork monitoring station. Deer Creek is located in the SOD mine panels area. The Deer
Creek monitoring station was established as a new monitoring location in the spring of
2005 (Map 2) and does not have a flume or data logger. Baseline monthly monitoring of
Deer Creek was conducted in WY 2005. Routine monitoring (three times per year) of
Deer Creek began in WY 2006.
3.1.3.6 Horse Gulch and East Gulch, East of Horse Gulch
Horse Gulch and East Gulch, East of Horse Gulch are ephemeral stream drainages that
are tributary to the Dry Fork and flow only in response to storm events and spring runoff.
Horse Gulch flows into Minnesota Reservoir. East Gulch, East of Horse Gulch flows
from the north into the Dry Fork, upstream of the Minnesota Reservoir Flume monitoring
station and downstream of the Middle Dry Fork monitoring station. Horse Gulch is down
gradient of the southwest mine panels area. East Gulch, East of Horse Gulch overlies the
southwest and SOD mine panels areas. These monitoring stations were established in
1977, do not have flumes or data loggers, and are located north and northeast of
Minnesota Reservoir, respectively (Map 2).
3.1.3.7 Minnesota Creek (Upper, Lower)
Minnesota Creek is the major stream that drains the southwestern portion of the permit
area. There are two stream monitoring stations in Minnesota Creek: Upper Minnesota
Creek, located upstream of the confluence with Dry Fork; and Lower Minnesota Creek,
located downstream of the confluence with Dry Fork. The Upper Minnesota Creek
monitoring station was established by the United States Forest Service (USFS) in 1977 to
collect baseline data for the SOD mine panels area and to support the Minnesota Creek
Augmentation Plan. The Upper Minnesota Creek Flume site has a 48 -inch Parshall flume
and a data logger.
The Lower Minnesota Creek monitoring station, Minnesota Creek near Paonia, CO
(USGS 09134000), is a USGS surface water gaging station. This site was monitored
from 1937 to 1947 and then from 1985 to the present. The Lower Minnesota Creek
station monitors the SOD mine panels area and the southwest mine panels area (Map 2).
June 2014 HydroGeo, Inc.