1994-12-29_GENERAL DOCUMENTS - C1980007

• Permit No: C1980007
• IBM Index Class Name: General Documents
• Doc Date: 12/29/1994
• Doc Name: Decision Doc Federal Lease
• Permit Index Doc Type: Other Permits
• Media Type: D
• Archive: No

wetherill Milkvetch (Astragalus wetherillll) Category-2
Columbian sharptailed Grouse (Tympanuchus phasianellus) Category-2
Roundtail chub (Oil& robusta) Category-2
• Category 1 and 2 species are candidates for listing as
threatened or endangered under the Endangered Species Act;
information is currently not sufficient to support listing.
Proposed species are those which have been formally proposed
to be listed as threatened or endangered under the Endangered
Species Act. Proposed species are afforded the same
protection as listed species.
H. Cultural Resources
There have been two cultural resource inventories conducted for
exploration drill holes in 1992. No sites were found. There
will be another survey conducted for additional drill sites in
1993 .
I. Water Resources
Surface Water
The tract is located within the North Fork of the Gunnison River
(North Fork) Drainage Basin. The area, located a few miles south
of the North Fork mainstem is a topographic high, averaging 7600
feet above MSL, on the northern flanks of Jumbo Mountain, and is
drained by several first and second order intermittent channels.
• These channels enter the North Fork approximately 5 miles
upstream (east) of the town of Paonia, Co. The flow of the North
Fork varies seasonally, with high flows occurring during spring
from snowmelt. After snowmelt, flows begin to recede, reaching
their low during winter. The 100-year flood event produces a peak
flow rate of about 7,920 cubic feet per second.
Water quality data (inorganic constituents and suspended sediment
concentrations) for the North Fork indicates that generally,
water quality is good. The water is an alkaline, soft, calcium-
bicarbonate-sulfate type with total dissolved solids
concentration averaging around 100 mg/l. The water is cold, with
winter temperatures near freezing and summer temperatures in the
18-20 degree C range. Suspended solids concentration averages
near 50 mg/1 with maximum concentrations occurring during
snowmelt, in the range of 200-250 mg/l. Both dissolved metals
and nutrient concentrations are generally low throughout the
year.
Surface water flow over the tract is in response to snowmelt and
summer precipitation events. There is one known developed water
source (Jumbo Mountain spring 12) on the tract (BIM surface) and
three others (Jumbo Mountain Springs f 1, 3,i 5) within a mile of
the tract boundary (see Map 4) on BLM surface. The primary use of
these water sources is livestock and wildlife. The BLM has
• reserved water rights on these water sources, adjudicated by the
State of Colorado, with an appropriation date of April 17, 1926.
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