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Example Results for Watershed Response Model for Forest Management (WATBAL): the 2000 Crooked Fire in the Clearwater National Forest, Idaho
The Crooked Fire occurred on the Clearwater National Forest in July 28, 2000. WATBAL was used to estimate post-fire sediment and peak flow increases. The pre- and post-fire WATBAL comparison is shown below. All values are percent increase over baseline condition (Jones 2000).
| Watershed |
Pre-fire |
Post-fire |
||||||
| Sediment |
Qaa1 |
Qpk2 |
Tpk3 |
Sediment |
Qaa |
Qpk |
Tpk |
|
| (%) |
(%) |
(%) |
(%) |
(%) |
(%) |
(%) |
(%) |
|
| |
||||||||
| Haskell | 448 |
8 |
8 |
9 |
104 |
15 |
16 |
17 |
| Rock | 31 |
5 |
5 |
5 |
295 |
18 |
20 |
19 |
| Pack | 9 |
9 |
9 |
10 |
9 |
9 |
9 |
10 |
| Lower Crooked | 14 |
5 |
5 |
6 |
109 |
15 |
16 |
17 |
| Crooked (at mouth) | 7 |
2 |
2 |
3 |
22 |
3 |
3 |
4 |
| 1 | Average annual runoff |
| 2 | Peak flow |
| 3 | Time to peak |
| 4 | Haskell watershed in pre-fire condition produces 48% more sediment than baseline condition. |
REFERENCES
Jones, Richard. 2000. BAER report, Crooked Fire, Clearwater National Forest, Idaho. Orofino, ID: U.S. Department of Agriculture, Forest Service, Northern Region, Clearwater National Forest. 15 p.
USDA Forest Service - RMRS - Moscow Forestry Sciences
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