PERMFILE60920

• Permit No: C1981033
• IBM Index Class Name: Permit File
• Doc Date: 2/1/1981
• Doc Name: Permit
• Section_Exhibit Name: 1981 ORIGINAL APPLICATION
• Media Type: D
• Archive: No

2.04.5(1)(b)
There is an even distribution of a number of springs through
' the 400' interval above the F seam with a significant increase
in the number of springs occurring between 450' - 500' and
500' - 600' above the F seam. This latter distribution suggests
a significant shale or aquiclude layer at these two points. One
of the above groups of springs occurs within Poison Gulch, a
tributary of the Dry Fork of the Minnesota Creek. The valley
bottom parallels the dip, thus giving rise to this stratigraphic
zonation of springs. In addition, the spring waters are
dominantly low solids (S00 ppm, TDS) sodium bicarbonate waters.
' There is no marked change in water quality with distance above
the F seam.
'
A large number of the springs dry up in late summer. This is
' evidence of either a small amount
d
if
li
i of recharge to the aquifer or
l
If th
t
te
aqu
er system.
a rather
m arge amoun
ere was a
of recharge and a sufficient flow through the aquifer system,
assuming aquifer continuity, then there should be a large
number of springs along the north facing hillside flanking the
' North Fork of the Gunnison River. This is not the case. There
is also no apparent concentration of springs issuing from the
north facing walls of the Dry Fork of Minnesota Creek, a steam
that cuts across the dip of the be ds. These factors suggest
' local recharge and discharge.
There are few springs (11 in all) issuing from beloo~ the F seam.
Almost all of these springs occur in either Sylvester Gulch or
Gribble Gulch located about a mile west of the town of Somerset.
' Whether this water originated further south of the block and
flows through an aquifer system beneath the F seam, or is local
' recharge water, is unknown. This total flow amounts to about
65 gallons per minute in the early summer.
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