REP14584

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 4/25/2003
• Doc Name: 2002 AHR Appendix A Thru D
• From: Mountain Coal Company
• To: DMG
• Annual Report Year: 2002
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

Lower Minnesota Creek (USGS)
Daily Mean Discharge Values
(cubic feet per second)

•

Day Oct-01 Nov-01 DecA1 Jan-02 Feb-02 Mar-02 Apr-02 May-02 Jun-02 Jul-02 Aug-02 Sep-02
1 2.6 3.7 3.4 3.0 2.4 2.5 6.5 11.0 22.0 7.4 2.1 1.6
2 2.2 3.2 3.5 2.2 2.5 2.0 7.0 10.0 21.0 9.0 2.2 1.5
3 2.2 3.0 3.5 1.9 2.8 2.0 7.4 1 2.0 20.0 7.8 2.7 1.5
4 2.2 3.0 3.6 2.8 2.9 2.7 7.6 12.0 19.0 7.8 2.7 1.6
5 2.1 3.0 3.6 2.7 2.9 2.3 7.7 13.0 18.0 7.9 2.5 1.5
6 2.2 3.0 3.8 2.7 2.8 2.5 7.7 15.0 17.0 8.4 3.6 1.5
7 2.3 3.2 3.8 2.8 2.7 2.8 7.7 17.0 16.0 7.6 3.3 2.2
8 2.4 4.5 2.7 2.8 2.7 3.3 7.5 18.0 16.0 7.1 2.8 3.6
9 5.8 3.5 2.3 2.9 2.7 2.2 7.8 16.0 16.0 7.3 2.4 3.8
10 3.8 3.4 2.6 3.0 2.8 2.7 8.4 16.0 15.0 7.0 2.2 2.5
11 9.2 3.2 3.4 2.7 2.6 3.4 12.0 15.0 14.0 6.7 2.0 2.6
12 7.2 3.2 3.0 2.4 2.7 3.5 10.0 15.0 15.0 6.5 1.9 3.1
13 4.8 3.2 2.9 2.1 2.7 4.0 9.5 13.0 19.0 6.1 1.9 3.2
14 4.3 3.0 3.2 2.1 2.6 4.4 9.7 12.0 19.0 4.2 1.9 2.9
15 4.0 3.0 3.4 2.1 2.9 3.7 10.0 13.0 19.0 3.9 1.8 2.4
16 4.1 3.0 3.0 2.9 2.9 3.1 11.0 14.0 18.0 3.9 1.7 2.3
17 4.0 3.0 2.8 2.8 2.7 2.6 10.0 16.0 17.0 3.7 1.7 3.1
18 4.0 3.0 3.2 2.7 2.7 2.9 9.5 17.0 16.0 3.7 1.6 4.7
19 3.7 2.8 3.1 2.1 2.7 3.3 9.4 18.0 16.0 3.4 1.6 3.6
20 4.0 2.2 3.4 2.6 2.7 3.9 9.5 19.0 16.0 3.5 2.6 2.9
21 3.7 2.4 2.9 2.6 2.3 4.4 8.9 20.0 15.0 3.8 2.d 2.7
22 3.9 3.6 3.0 2.7 2.1 5.1 8.4 18.0 15.0 3.3 2.1 2.6
23 3.6 3.4 3.3 2.5 2.5 4.5 10.0 15.0 14.0 3.5 2.0 2.5
24 2.8 3.0 2.8 2.1 2.7 3.9 11.0 14.0 13.0 3.0 1.6 2.4
25 2.7 3.2 2.6 2.6 3.0 3.6 12.0 12.0 13.0 2.9 1.5 2.4
26 2.9 2.6 3.0 2.6 2.2 3.5 13.0 12.0 12.0 4.1 1.4 4.9
27 2.9 2.8 2.8 2.7 2.0 4.1 13.0 12.0 12.0 3.1 1.4 3.4
28 2.9 2.9 2.8 2.7 2.0 4.9 12.0 13.0 10.0 2.9 1.4 3.2
29 2.9 2.6 3.0 2.7 --- 5.2 11.0 17.0 6.6 2.6 1.5 5.1
30 2.9 3.5 3.0 2.7 --- 5.5 10.0 22.0 4.6 2.3 1.6 5.9
31 3.8 --- 3.0 2.2 --- 5.9 --- 22.0 --- 2.3 1.6 ---
Mean 3.62 3.10 3.11 2.56 2.61 3.56 9.51 15.13 15.47 5.05 2.05 2.91
Min 2.10 2.20 2.30 1.90 2.00 2.00 6.50 10.00 4.60 2.30 1.40 1.50
Max 9.20 4.50 3.80 3.00 3.00 5.90 13.00 22.00 22.00 9.00 3.60 5.90
A-2
West EIk Mine
2002 Annual Hydrology Report HydroGeo, Inc.