2010-12-08_PERMIT FILE - C1981008A ‎(59)‎

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/8/2010
• Doc Name: Reclaimed San Miguel Power Drainage Channel Design
• Section_Exhibit Name: Section 2.05.4‎(2)‎‎(c)‎ Attachment 2.05.4‎(2)‎‎(c)‎-3
• Media Type: D
• Archive: Yes

peak velocity was belowthe limiting velocity of 5.0 fps. Below is a summary of the input factors and
the results determined by the computer program.
Channel Factor
Channel CC -CC'
Q
32.55 cfs
Z (side slopes)
10:1
Shape
Trapezoidal
n
0.030
Limiting Velocity
5.0 fps
Slope
0.0370 ft /ft
Results
Normal Depth (dn)
0.24 ft
Flow velocity
4.21 fps
Channel width
30 ft
Based on the above results, the reclaimed drainage channel will be generally flat bottomed with a
minimal width of 30 feet. The bottom will be relatively flat with minute channeling. Added rock may
be placed for energy dissipation.
The reclaimed drainage channel will be topsoiled and revegetated according to Section 2.05.4(2)(d)
and (e)
(Revised June 2010) ATTACHMENT 2.05.4(2)(C)- 3 -2