Influence of vertical channel change associated with wood accumulations on delineating channel migration zones, Washington, USA
Brummer CJ, Abbe TB, Sampson JR, Montgomery DR. 2006. Influence of vertical channel change associated with wood accumulations on delineating channel migration zones, Washington, USA. Geomorphology. 80(2006):295-309
From the Abstract: "We combine hydraulic modeling and field investigations of logjams to evaluate linkages between wood-mediated fluctuations in channel-bed and water-surface elevations and the potential for lateral channel migration in forest rivers of Washington state. In the eleven unconfined rivers we investigated, logjams were associated with reduced channel gradient and bank height. Detailed river gauging and hydraulic modeling document significant increases in the water-surface elevation upstream of channel-spanning wood accumulations. ... The return of riparian forests afforded by current land management practices will increase the volume and caliber of wood entering Washington rivers to a degree unprecedented since widespread clearing of wood from forests and rivers nearly 150 years ago. a greater supply of wood from maturing riparian forests will increase the frequency and spatial extent of channel migration relative to observations from wood-poor channels in the period of post-European settlement."
- Type
- Journal Article
- Authors
- Brummer, Chris; Abbe, Tim; Sampson, Jennifer; Montgomery, David
- Units
- OLYM
- Keywords
- channel migration zone, Geomorphology, Hoh River Watershed, Large Woody Debris, logjam, Ozette River Watershed, Physical Sciences, Queets River Watershed