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

Upper North Fork (USGS)
Daily Mean Discharge Values
(cubic feet per second)

•
•
Day Oct-01 Nov-01 Dec-01 Jan-02 Feb-02 Mar-02 Apr-02 May-02 Jun-02 Jul-02 Aug-02 Sep-02
1 53 61 54 45 37 60 251 512 639 237 237 40
2 52 54 57 40 44 51 317 464 577 246 237 39
3 48 54 55 32 41 58 347 400 512 240 251 36
4 47 57 54 43 40 62 400 405 426 230 243 33
5 47 57 53 39 41 66 444 460 370 238 241 31
6 46 56 51 46 43 64 431 523 361 242 196 30
7 47 58 51 48 48 63 427 587 367 220 55 36
8 47 71 39 45 52 60 450 563 359 220 60 43
9 66 68 35 48 47 52 470 470 347 243 54 47
10 65 61 43 50 42 66 500 443 320 235 50 44
11 55 60 51 43 45 73 510 441 282 238 49 45
12 56 60 44 45 48 69 437 454 250 239 48 51
13 55 59 42 47 44 70 407 383 245 240 45 59
14 54 58 48 39 50 72 456 394 270 242 44 59
15 54 56 48 49 46 67 516 441 278 238 43 52
16 53 55 43 48 44 64 505 526 264 239 42 49
17 53 54 41 44 51 64 415 539 253 240 41 52
18 53 54 51 43 51 64 397 624 251 235 41 65
19 52 51 43 37 50 63 411 651 248 232 40 71
20 52 47 45 47 48 69 433 630 244 239 47 62
21 51 47 45 51 47 79 362 600 246 236 58 60
22 55 58 45 47 50 86 319 575 244 230 51 60
23 55 59 35 42 51 90 325 487 238 233 48 59
24 51 55 32 36 49 71 383 420 242 248 45 57
25 49 57 35 44 48 65 438 367 243 240 43 54
26 49 54 38 49 41 66 465 357 238 258 42 77
27 48 50 42 47 50 78 487 378 234 248 42 80
28 49 42 38 43 56 102 402 431 233 243 41 74
29 49 49 50 42 -- 132 380 495 234 238 41 78
30 47 58 48 42 -- 161 441 557 235 240 42 108
31 56 -- 46 37 -- 195 654 -- 240 40 --
Mean 52.1 56.0 45.2 43.8 46.6 77.5 417.5 491.3 308.3 238.3 82.5 55.0
Min 46.0 42.0 32.0 32.0 37.0 51.0 251.0 357.0 233.0 220.0 40.0 30.0
Max 66.0 71.0 57.0 51.0 56.0 195.0 516.0 654.0 639.0 258.0 251.0 108.0
A-1
West Elk Mine
2002 Annual Hydrology Report HydroGeo, Inc.