PERMFILE72850

• Permit No: C1981041A
• IBM Index Class Name: Permit File
• Doc Date: 5/13/2002
• Doc Name: & Appendix 7-1
• Section_Exhibit Name: Tab 07 Hydrology Description
• Media Type: D
• Archive: Yes

• (2) Surtace Water Information
(a)All water discharged from the permit area either from sedimentation ponds or
from mine dewatering processes will enter the Colorado River. Locations of all
surtace bodies of water and points of discharge to the river are shown in Exhibit
17. The Colorado river splits the permit area east and west. On the west side
of the river, the permit area is traversed by Coal Creek, an ephemeral drainage,
and Jerry Creek, an intermittent drainage, both of which drain generally
southeastward through deeply incised canyons to the river.
On the east side of the Colorado River, two intermittent drainages and one
primary ephemeral drainage cross the permit area. Rapid Creek and
Cottonwood Creek cross the south end of the permit area on their way to the
Colorado River. An un-named drainage crosses the northern portion of the
permit area and passes through the affected area of land designated as the
North Decline.
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The U. S. Government Highline Canal carries Colorado River water down the
west side of DeBeque Canyon with siphons under the channels of Coal Creek
and Jerry Creek. Flows in the Highline Canal are diverted from the Colorado
River primarily during the summer irrigation season, except for a small amount
diverted year-round to be used as cooling water for Public Service Company's
Cameo power plant. Water quality in the canal is essentially the same as that
of the Colorado River.
Coal Creek drains an area of about 12 square miles and has an average
gradient of 2.2 percent within the permit area. Tributary drainage ways are
characteristically steep with slopes in the headwater areas exceeding 100
percent. Jerry Creek drains an area of about 70 square miles and has an
average gradient of 1.5 percent in the permit area.
• 7-7 (New 3/1/96)