Basin-Indians Wildfire in California's Central Coast Region
In the summer of 2008, the Indians and Basin Complex fires started separately and then merged into one fire. The Indians fire, started by a campfire, burned 81,378 acres of the south eastern Santa Lucia mountains of Central California between June 8th and July 10th. The Basin Complex Fire, started by lightning, burned 162,818 acres of then northern Santa Lucia mountains between June 21st and July 28th,. After a wildfire there is major concern about the possibility of flooding, debris flows and other large scale erosion in the years following the fires. These events potentially endanger the Big Sur and Carmel Valleys, Salinas farm Land, Steelehad habitat, Highway 1 and numerous federal and state recreation areas. There has been work aimed at understanding the effects of fire on soils, debris flows and erosion. There is little understanding of the effects of post-fire erosion and debris flows on river habitat, and specifically steelhead habitat.
The Basin Complex-Indians Fire burned approximately 240,000 acres in the northern Santa Lucia Mountains. The fire burned parts of the Upper Carmel River, Arroyo Seco, San Antonia, Rat Creek, Big Sur and Little Sur watersheds. Much of the land burned is within the National Forest System lands on the Monterey District of Los Padres National Forest. Other areas burned included parts of Fort Hunter Liggett.
Resource/s at Stake
There is a broad range of resources at risk after the fires. They include the Big Sur and Carmel Valley communities, Salinas Valley farm land, highway 1, numerous state parks and camp grounds, private residents and essential steelhead habitat.
Of Concern in the Carmel Valley is the possibility that the fire may lead to a sizable influx of sediment behind the Los Padres dam. This is the only effective storage facility for flood control and dry season conservation releases on the Carmel River.
Steelhead are of particular concern due to their threatened status. The fire is expected to result in an increased load of fine sediments and debris in the years immediately following. This will likely reduce spawning habitat in the short term, but periodic influxes of large woody debris are considered beneficial in the long run because they help maintain structural habitat diversity in streams. The likely net impact on the struggling local steelhead populations is unknown. Cite error: Closing
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<ref> tag. The principle forms of erosion in this post-fire system are in-channel floods, hyperconcentrated floods, debris torrents, mudsliding and debris flows.
- There has been a lot of work done by the US Geological Survey to understand post-fire debris flows.
- There has been some work on the long term effects of fire on watershed processes.
- There is a fair amount of knowledge on the life history and habitat requirements of Steelhead.
- The California Department of Fish and Game has developed a well respected method for in stream fish habitat assessment.
- High resolution LIDAR and or aerial photography can help to detect erosion and debris flows.
Future work should seek to understand the impacts of rain on the burned area. The greatest hazards to the communities of Big Sur is flooding and debris flows. The in stream habitats of threatened steelhead will also be effected by erosion and debris flows. There is little understanding of the effects of post-fire erosion on steelhead habitat.
- Executive Summary: Basin Complex Fire/Indians Fire
- Inciweb Indians Fire Summary
- KUSP Basin Complex Fire News Summary
- Summary of Debris Flow Risk Model
- Basin Complex Fire SEAT Report
- KUSP Indians Fire News Summary
- Need source
- Need source
- Basin Complex Fire Seat Report
- Ten Year Comprehensive Strategy
- Other Watershed Issues
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