PERMFILE57171

• Permit No: C1981014
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: pages 93R to 155L
• Section_Exhibit Name: EXHIBIT 19 MINE AREA DIVERSIONS AND DITCHES
• Media Type: D
• Archive: No

u
Subwatershed No. 2'
Hvdroloov Inputs
Watershed Area: 450.9 acres
Hydraulic Length (L): 13,100 feet
Maximum Elevation Difference (H): 1,692 feet
Time of Concentration (Tc):
Tc = 0.79(refer to the SEDCAD Printouts on Table 19)
Curve Number (CN):
Vegetation Type: ponderosa pine-pinyon juniper
woodland, grassland
Cover Density: 60$
Soils:

Hydrologic Soil
Soil Tvoe Groun
126 C
56 C
122 B
64 D
121 B
112 B
Area (acres) CN*
54.9 69.5
101.3 69.5
134.0 52.8
0 76.5
40.4 52.8
120.3 52.8
*(Ref: SCS, Figure S-3, using Juniper-Grass
vegetation with 60~ cover.)
Weighted Average CN=59
All other hydrology inputs are the same as those used in
Subwatershed No. 1.
•
TR-32 143 Revised 8/O1