2011-04-14_PERMIT FILE - C1980007A

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 4/14/2011
• 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

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TABLE OF CONTENTS
INTRODUCTIONTO STUDY ......................................................................................................... ..............................1
EXISTING STREAM CHANNEL CHARACTERISTICS ......................................................... ..............................3
BASIN HYDROLOGIC CHARACTERISTICS ............................................................................ ..............................4
AVERAGEANNUAL RUNOFF ............................................................................................................ ............................... 4
PEAKRUNOFF RATES ...................................................................................................................... ............................... 5
SEDIMENTYIELD ............................................................................................................................. ............................... 6
STREAM CHANNEL HYDRAULIC CHARACTERISTICS .................................................... ..............................7
IMPACTS OF SUBSIDENCE ON STREAM CHANNELS ...................................................... ............................... 8
CHANGES IN STREAM CHANNEL HYDRAULIC CHARACTERISTICS ....................... .............................10
CHANGES IN SEDIMENT YIELD ............................................................................................... .............................12
SUMMARY.......................................................................................................................................... .............................13
REFERENCES..................................................................................................................................... .............................14
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