2022-09-29_PERMIT FILE - C1980007A ‎(2)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/29/2022
• Doc Name: STREAM CHANNEL PARAMETERS
• Section_Exhibit Name: Exhibit 55B Stream Channel Parameters and Changes Due to Mining-Induced Subsidence
• Media Type: D
• Archive: Yes

Width (ft)Depth (ft)Width (ft)Depth (ft)
3 9.5 3.1 12 0.7 4 0.4
29 4.9 2.9 11 0.4 5 0.1
32 13.3 3.2 17 0.8 7 0.4
35 64.0 3.8 29 1.5 7 0.8
36 25.8 3.5 22 0.7 8 0.2
37 49.6 3.7 28 0.9 9 0.2
39 29.0 3.5 16 0.9 6 0.1
41 3.5 3.5 2 0.5 0 0.0
(1) Maximum values resulting from the maximum changes in slope due to subsidence.
(2) These values represent estimated maximum channel size changes for the subject basin.
TABLE 5
POST-MINING STREAM CHANNEL HYDRAULIC CHARACTERISTICS
Basin
Number Flow (cfs)Velocity
(ft/sec)
Channel Size Near Mouth
After Subsidence (1)
Max. Projected Channel Size
Changes (2)
G:\WWE\831-032\921\Engr\Exhibit 55B\
MCC_subsidence_55B_2020_Tables.xlsx\Table 5
Wright Water Engineers, Inc.
December 23, 2020
Prprd By: AWP
Chkd By: JMK