By Robert Leeper
The Multi-Hazards Demonstration Project is coordinating the USGS response to the recent Station fire in southern California. This response includes ash sampling, debris flow monitoring and warning, and the impact on species in the burn area. As a part of the debris flow monitoring project, we recorded the geomorphic response of several watersheds within the burn area to the storm that occurred 12 – 14 December, 2009. Responses ranged from minor erosion to hazardous flash flooding and debris-flow. The following photos document changes in a stream channel that occurred as a result of a debris flow produced during the afternoon of 13 December, 2009. The photos were collected by Robert Leeper while conducting fieldwork with Jason Kean on 8 December, 2009 and 15 December, 2009. The debris flow study area was selected by Jason Kean and Dennis Staley.
Mouth of side canyon in Big Tujunga 12/08/09
Mouth of side canyon in Big Tujunga 12/15/09
Farther up from mouth of side canyon in Big Tujunga 12/08/09
Farther up from mouth of side canyon in Big Tujunga 12/15/09
