2021-02-05_PERMIT FILE - C1980007A ‎(4)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 2/5/2021
• 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

TABLE 5
POST-MINING STREAM CHANNEL HYDRAULIC CHARACTERISTICS
Channel Size Near Mouth Max. Projected Channel Size
Basin Flow (cfs) Velocity After Subsidence(1) Changes (2)
Number (ft/sec)
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 1 3.5 1 3.5 2 0.5 0 1 0.0
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.
G:\WWE\831-032\921\Engr\Exhibit 55B\ Wright Water Engineers,Inc. Prprd By:AWP
MCC_subsidence_5513_2020_Tables.xlsx\Table 5 December 23,2020 Chkd By:JMK