Skokomish Delta
From Salish Sea Wiki
- Most Recent Edits
- Salish Sea References
- Wiki Rules
- Wiki text does not reflect the policy or opinion of any agency or organization
- Please adhere to our Social Contract and Style Guide
- Complain here, and be nice.
The Skokomish Delta is the largest river delta in Hood Canal where the Skokomish River Basin enters Anna's Bay. Recent work has restored tidal flow to the historical delta footprint.
Nearshore Strategies Data Report
Cereghino et al 2012 completed a soundwide analysis to identify and describe river delta sites in Puget Sounds as part of a nearshore ecosystem restoration strategy (using remote sensing data c. 2000-2006). The following narrative of this delta site was developed to support distribution and use of analysis results:
- The Skokomish Delta in the Hood Canal Sub-basin historically contained 852 acres of vegetated wetland along a 14 km shoreline. The delta receives flow from a 64,398 square kilometer watershed. These characteristics make this system the 8th largest delta out of 16 systems in Puget Sound.
- Simenstad et al 2011 found that this system had lost none of its vegetated tidal wetlands, and 56% of its shoreline length. Of the remaining shoreline, 76% shows some evidence of infrastructure development. In the surrounding uplands, 15% of land is estimated to have greater than 10% impervious surface. Across the watershed, 10% of land is estimated to have greater than 10% impervious surface. Based on these paramters, the site was given a degradation score of 32 out of 100, making it the 11th most degraded delta in Puget Sound. It faces a low risk of future development locally, and a low risk of development across the watershed. Approximately 42% of the watershed is currently impounded behind dams.
Notes
- The Mason Conservation District and Skokomish Indian Nation have been leading restoration, management and monitoring.
- User:Egrossman usgs has been studying sediment dynamics.
- File:Arcos 2012 skokomish channel stability.pdf describes historic seismic uplift that resulted in the current configuration of the river mouth and wetland complexes.
