Our research focuses on estimating post-fire sediment inputs to several tributaries of the South Fork Salmon River
. After severe forest fires in the summer of 2007, heightened landslide, overland flow and debris flow occurrences may have contributed to increase erosion rates. Higher post-fire erosion rates have implications for forest vegetation recovery and aquatic habitat quality; such effects may be indicative of the future impacts of the more frequent and severe forest fires promoted by current climate change.
- What is the relative sediment input of landslides, debris flows and overland flow to the channel?
- How does slope aspect, angle and burn severity affect overland flow erosion rates?
- How much of the input sediment has been stored in the floodplain? How much has left the basin
- How do these input rates compare to long-term (decadal to millennial) erosion rates?
- Several tributaries to the South Fork Salmon River, Payette National Forest, Idaho.
- Ground mapping of landslide and debris flow deposits and volume eroded.
- 137Cs and 210Pb profiles of hillslope samples to determine overland flow erosion rates.
- National Science Foundation
- Rolf Aalto, Department of Geography, University of Exeter