2020-05-07_PERMIT FILE - C1981010A ‎(8)‎

• Permit No: C1981010A
• IBM Index Class Name: Permit File
• Doc Date: 5/7/2020
• Doc Name: page 4-172 to 4-222z
• Section_Exhibit Name: 4.8 Hydrologic Impacts
• Media Type: D
• Archive: Yes

Table 4.8-7 Embankment Designs Page 1
revpgsFeb202O
Elevation Max.W. S. Top of
Upstream Elevation 25-Yr, Embankment
Sedimentation Pond Toe Principal Spillway Emergency Spillway 24-Hr Event Elevation Freeboard
(ft) Stage(ft) Elevation(ft) Diameter-d(in) Stage(ft) Elevation(ft) Width-b(ft) (ft) (ft) (ft)
Impoundment "H" -- 9.5 6466.1 60" 11.5 6468.0 -- 6466.7 6473.0 --
Johnson #6 6466.0 9.0 6477.0 36" 10.0 6478.1 32.0 6476.4 6481.0 4.5
Johnson #7R 6445.3 7.0 6452.0 -- 10.0 6455.0 16.7 6454.6 6456.0 1.4
Johnson #8R 6416.5 7.0 6424.0 -- 9.0 6426.0 16.8 6425.7 6427.0 1.3
Johnson #9R 6402.3 8.5 6412.0 -- 9.5 6413.0 8.4 6412.7 6414.0 1.3
Johnson #1 OR 6367.8 9.0 6376.0 -- 11.0 6378.0 11.2 6378.4 6380.0 1.6
No Name#2 6355.4 8.5 6364.7 36" 9.8 6366.0 18.3 6366.8 6368.0 1.2
No Name#4 6322.4 14.5 6336.9 36" 15.6 6339.0 10.0 6339.7 6341.0 1.3
No Name#5R 6305.6 6.0 6312.0 -- 8.0 6314.0 8.8 6314.7 6316.0 1.3
00
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Coyote 6291.9 30.5 6305.5 36" 37.0 6312.0 60.0 6306.1 6326.0 14.0
Ute#1 R 7262.6 7.0 7269.0 -- 9.0 7271.0 13.4 7269.9 7272.0 1.0
Middle Pyeatt#1 6499 10.0 6511.0 -- 11.0 6512.0 9.5 6511.0 6513.0 2.0
Middle Pyeatt#2 6477 10.0 6487.0 -- 11.0 6488.0 14.4 6489.0 6491.0 2.0
Middle Pyeatt#3 6449 10.0 6461.0 -- 11.0 6462.0 3.1 6460.8 6463.0 2.0
Note: Elevations are based on current topographic information obtained from aerial photographs. Actual elevations will vary according to actual field conditions after topsoil removal but
relative elevations should remain the same.
(1) Single open-channel design.
(2) As-built information.
(3)West Horse is a mostly incised structure with a small(3 ft.)embankment
(4)The Deal Gulch embankment is 6.0 feet tall as measured from the upstream toe.The remainder of the capacity comes from the incised portion
Updated 3/18