Research will focus on the Skagit River delta tidal flats, south of the Swinomish Slough (an artificial boat channel). These flats are dominated by sand, and spring tides approach 4 m. Water input from the Skagit is relatively large: mean over 66 y for peak annual flows is 71310 cfs.
Studies in this area will emphasize the following objectives in the science plan:
Substrate Map courtesy of:
McBride, A., K. Wolf, and E.M. Beamer, 2006, Skagit Bay Nearshore Habitat Mapping. http://www.skagitcoop.org/EB2180_McBride%20et%20al_2006.pdf
Note: all photos taken near or at low tide.
|1.) Bedforms Central||2.) Channel Central||3.) Channel South|
|4.) Transition Central||5.) Rivermouth Northfork||6.) Mudflats North|
|7.) Ripples Central||8.) Sandflats Central||9.) Flats Central|
Collins, B., 1998, Preliminary assessment of historic conditions of the Skagit River in the Fir Island area: implications for salmonid habitat restoration. Report to: Skagit System Cooperative, 66 p.
Downing, John, The coast of Puget Sound- its processes and development. Seattle: University of Washington Press, 1983.
Hood, Gregory W., 2006, A conceptual model of depositional, rather than erosional, tidal channel development in the rapidly prograding Skagit River Delta (Washington, USA): Earth Surface Processes and Landforms. v. 31, p. 1824-1838.
Grossman, Eric, E. Deltaic Habitats in Puget Sound- Natural versus human Related Change.2005. Sound Waves Monthly Newsletter. http://soundwaves.usgs.gov/2005/01/fieldwork3.html
Grossman, Eric E., Stevens, Andrew, Gelfenbaum, Guy, and Curran, Christopher, 2007, Nearshore circulation and water column properties in the Skagit River Delta, northern Puget Sound, Washington - Juvenile Chinook salmon habitat availability in the Swinomish Channel: U.S. Geological Survey Scientific Investigations Report 2007-5120, 96 p. http://pubs.usgs.gov/sir/2007/5120/
Hood, W.G., 2007, Large woody debris influences vegetation zonation in an oligohaline tidal marsh. Estuaries and Coasts, v. 30, p. 441-450.
McBride, A., Wolf, K., Beamer, E.M., 2006, Skagit Bay Nearshore Habitat Mapping: Skagit River System Cooperative. http://www.skagitcoop.org/EB2180_McBride%20et%20al_2006.pdf