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1
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- Rainy Season Preparations
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2
|
- The Sierra Madre Public Works Department thanks:
- Los Angeles County Department of Public Works (LACDPW)
- California Conservation Corps (CCC)
- US Forest Service-Angeles National Forest (USFS)
- Natural Resources Conservation Service (NRCS)
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3
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4
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- The County Preliminary Map defines 16 individual drainage areas which
are likely to discharge mud and debris into Sierra Madre. City staff has
identified two additional debris-producing drainage areas.
- 5 -
discharge to debris basins.
- 1 of those 5 basins may be
inadequate.
- 11 – discharge to
public/private pro- property.
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5
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- Drainage Area 3a, Richter/Auburn
- 6 acres 83% burned
- 2,100 cy debris potential
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6
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- Drainage Area 3b, One Carter
- 5 acres 100% burned
- 1,900 cy debris potential
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7
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8
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- Drainage Area 3c, One Carter
- 12 acres, 100% burned
- 4,500 cy debris potential
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9
|
- Area 3c is north and east of the West Ridge of One Carter and drains to
the debris basin constructed as a part of the development.
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10
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- Drainage Area 3d, One Carter
- 4 acres, 100% burned
- 1,500 cy debris potential
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11
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12
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- Most of the burned area at One Carter lies above and behind Carter
Debris Basin (Drainage Area 3)
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13
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- Drainage Area 3e, above Mt. Wilson Trail (Private Street)
- 17 acres, 29% burned
- 4,000 cy debris potential
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14
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- Drainage Area 4, Sturtevant D.B.
- 12 acres, 75% burned
- 4,000 cy debris potential
- 1,500 cy debris capacity
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15
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- Drainage Area 4a, Stonehouse Cyn.
- 67 acres, 67% burned
- 20,100 cy debris potential
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16
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- Drainage Area 4b, Yucca Canyon
- 18 acres, 100% burned
- 6,800 cy debris potential
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17
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- Drainage Area 4d, Upper Brookside/
- Woodland
- 16 acres, 100% burned
- 6,000 cy debris potential
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18
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19
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20
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21
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- Drainage Area 4e, Skyland Drive
- 19 acres, 89% burned
- 6,800 cy debris potential
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22
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23
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24
|
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25
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- Drainage Area 1, Sierra Madre
Dam
- 153,600 cy debris potential
- Drainage Area 2, Lannan Canyon
- 25,700 cy debris potential
- Drainage Area 3, Auburn Debris
Basin 26,000 cy debris potential
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26
|
- Summary:
- Total debris captured by existing debris basins:
- 237,900 cubic yards
- Total debris not captured by debris basins:
- 57,150 cubic yards
- Total estimated debris deposits:
- 292,550 cubic yards
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27
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28
|
|
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29
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- Rainy Season Preparations
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30
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- Rainy Season Preparations
|
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31
|
- Rainy Season Preparations
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32
|
- Rainy Season Preparations
|
|
33
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- Rainy Season Preparations
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Notes
