REP37337

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 4/17/2007
• Doc Name: 2005 AHR Appendix A Thru D
• From: Hydro Geo Inc
• To: DRMS
• Annual Report Year: 2005
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

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Lower Dry Fork
Daily Mean Discharge Values
(cubic feet per second)
Da Oct-04 Nov-04 Dec-04 Jan-OS Feb-OS Mar-05 A r-05 Ma -05 Jun-05 Jul-OS Au -05 Se -05
1 0.52 0.87 (3 (3 3) 23 0.09 0.30 0.43 0.10 1.56 3.76
2 0.52 0.87 (3 3) (3 (23) 0.09 0.84 0.41 0.10 1.58 1.60
3 0.52 0.78 (3 (3) (3 23 0.04 4.47 0.50 0.10 1.61 1.56
4 0.52 0.78 (3 (3 3 23 0.01 7.44 0.54 0.10 1.78 1.82
5 0.52 0.76 (3 3 3 23 0.01 9.35 0.23 0.06 1.88 1.55
6 0.52 0.78 (3) 3 3 0.11 0.01 10.47 0.10 0.03 1.90 1.49
7 0.52 0.78 (3 (3 3 0.11 0.01 11.61 0.10 0.03 1.92 1,45
B 0.52 0.92 (3 3) (3 0.11 0.03 12.09 0.10 0.03 1.93 1.54
9 0.52 1.39 3) (3 3) 0.11 0.09 11.63 0.10 0.03 6.62 2.44
10 0.52 0.92 (3 1.28 3) 3.07 0.02 11,56 0.10 0.03 12.81 2.76
11 0.52 0.83 (3 1.28 (3 0.08 0.02 11,40 0.10 1.42 12.83 1.91
12 0.52 (3 (3 3 (3) 0.11 0.02 11.15 0.12 4.03 12.76 1.50
13 0.52 (3 (3 3 (3 0.09 0.19 10.94 0.11 4.01 12.64 1.39
14 0.52 3 3 (3 (23) 0.09 0.57 10.76 0.11 3.57 12.54 1.40
15 0.52 (3 (3 3) (23 0.09 0.56 10.54 0.10 3.22 12.42 1.18
16 0.52 {3 3 3 23) 0.09 0.68 10.34 0.10 2.90 12.29 0.94
17 0.52 3 (3 3) 23 0.09 0.83 10.16 0.10 0.60 12.09 0.87
18 0.69 3 3 (3 (23) 0.09 0.60 9.95 0.10 0.60 11.89 0.91
19 0.56 (3 (3 3) 23 0.09 0.43 9.86 0.10 0.61 11.68 0.80
20 0.52 3) 3 (3 (23 0.09 0.26 9.59 0.10 0.62 11.46 0.75
21 0.52 3 3) (3 (23 0.09 0.16 9.20 0.10 0.62 11.25 1.01
22 0.78 (3 3) (3) (23 0.09 0.11 5.94 0.10 0.64 11.02 1.58
23 0.61 3 (3 3) (23 0.09 0.10 0.49 0.10 0.66 10.78 1.36
24 0.69 3 3) 3) 23 0.09 0.20 0.36 0.10 0.68 10,51 1.27
25 0.83 (3 3) (3 23 0.09 0.41 0.38 0.10 0.69 10.26 0.94
26 D.74 3 3) 3 23 0.09 0.19 0.49 0.10 0.58 10.04 0.83
27 0.74 (3 (3 3) (23 0.09 0.14 0.45 0.10 0.58 9.75 1.08
28 1.34 (3 (3 (3) (23 0.09 0,12 0.47 0.10 0.81 9.42 2.65
29 0.61 (3 3 3 - 0.09 0,13 0.45 0.10 1.43 9.11 6.05
30 0.78 (3 (3 3) - 0.09 0.09 0.43 0.10 1.46 8.67 2.94
31 0.78 -- (3) (3) - 0.09 - 0.42 - 1.51 8.22 8.22
Mean 0.62 0.88 (4) 1.28 4 0.21 0.21 6.57 0.16 1.03 8.56 1.92
Min 0.52 0.78 4 1.28 4 0.08 0.01 0.30 0.10 0.03 1.56 0.75
Max 1.34 1.39 (4} 1.28 (4) 3.07 0.83 12.09 0.54 4.03 12.83 8.22
(3) Float Frozen or Dry
(4) Incomplete Data
(23) Recorder Shutdown
A-5
West EIk Mine
2005 Annual Hydrology Report NydroGeo, lnc.