REP31906

• Permit No: C1982056
• IBM Index Class Name: Report
• Doc Date: 6/16/1998
• Doc Name: 1997 Annual Hydrology Report ‎(2 of 3)‎
• From: Twentymile Coal Company
• Annual Report Year: 1997
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

TABLE 50
CYPRUS YAMPA VALLEY COAL CORPORATION: FOIDEL CREEK MINE
1997 ANNUAL HYDROLOGY REPORT
SUMMARY OF FLOW RATE DATA
SURFACE WATER MONITORING S1TES'
STATION
STATION LOCATION NUMBER
1997 MEAN FLOW
IRRIG. PERIOD'`
(cfs)
MAX FLAW
HISTORIC 1997
(c(s) (cfs)
MIN FLOW
HISTORIC 1997
(c(s) (cts)
PERIOD
OF
RECORD
POIDEL CREEK
AT ECKhfANPARK 800 2.65 56 21.00 0 0.79 10/75-09/97
BELOW MWE I B 2.93 52 4.64 0 1.99 04/85-09/97
ABOVE hBNE3 900 1.70 90 74.00 0 0.04 01/76-09/96
FISH CREEK
UPS7AEAM 1001 N/A 120 N/A 0 N/A 07/83-II/86
UPSTREAM 16 27.84 IBO 39.11 0 2083 03/87-09/97
BELOW SITE 115 302 11.08 70 12.01 70 10.22 07/9009/97
BELOW MINE 2 1002 28.09 198 60.69 0 5.59 OSh9-09/97
ABOVE FISH CRK TIPPLE 27A 18.33 217.8 48.25 0 709 04/85-09/97
DOWNSTREAM 1003 6.04 272 11.84 0 3.29 07/83-09N7
TROUT CREEK
ABOVE MmDLE CREEK 301 22.04 165 50,77 1 693 06/87-09/9'7
BELOW MO7D]-E CREEK 69 70.84 333 132.58 0.14 31.90 03/79-09/97
DOWNSTREAM 1005 ll2.66 225.97 225.97 3.2 42.95 0694-09/97
MIDDLE CREEK
UPSTREAM MC-I 1.58 4.3 3.48 0.19 0.19 069641997
DISCHARGE S1TE
F7SN CREEK TIPPLE
• FOND E 62 0.09 0.85 0 85 0 0.000 3/82-9/97
DISCHARGE SITES:
TOTAL FISH CREEK FOmII-CREEK PONDD WASTE ROCK
U.G.MWE BOREHOLE PORTAL POND
109t1I5 115 109 84
YEAR {cfs) {ds) (cfs) {cfs) (cfs)
1983 - - .--- 0.51 0
1984 0.19••• - 0.19""• 0.13 0
1985 0.23 - 0.23 0.61 0.27
1986 0.22 -- 0.22 1.19 0.44
1987 034 -- 0.34 0.31 0
1988 037 - 0.37 0.35 •'"'
1989 0.33 -- 0.33 0.45 0
1990 0.27 0.16 0.11 0.13 0
1991 0.21 0.15 0.06 0.11 0
1992 0.42 0.20 0.22 0.23 0.10
1993 0.53e 0.23a 0.30e 0.39 0.30
1994 0.34 0.14 0.20 0.19 0.10
]995 0.25 014 0.11 0.17 0.04
1996 009 0.06 0.03 1.06 0.12
1997 0.00 0.00 0.00 1.04 0.02
NOTES:
•' IRRIGATION PERIOD IS JUNE THROUGH SEPTI3HBER
••• AVERAGE RATE FROM BEGINNING OF MEASURID MDIE DISCHARGE ON MARCH 19, 7964
"*'• FLOWID FOR SHORT PERIOD DURING MAY, 1988
e REFLECTS IS7 PANEL SOUTH DEWATERING AC'HVITIES

rm un xaw useaesosawn~msawsu~m.su