Lower Stillaguamish Floodplain
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The Lower Stillaguamish is a focus area of the Snohomish Sustainable Lands Strategy. Salmon Recovery planning is centered on the Stillaguamish Watershed Council
Efforts
- Stillaguamish Valley Protection Initiative
- Stillaguamish Delta Dredged Sediment Re-use
- Stillaguamish Delta Restoration Pre-design
Resources
- File:Lower Stillaguamish.pdf - a large map of the lower stillaguamish
- File:Lower Stillaguamish DEM.pdf - a similar map with a elevation model of the floodplain showing river evolution
- File:Lower Stillaguamish Agriculture.pdf - a map showing 2011 agricultural land use and acreage.
- The Resource Lands Protection Initiative is an effort to define a shared land protection strategy that benefits both fish and agriculture and is centered in the Lower Stillaguamish.
- File:Lower stillaguamish floodplain parcels.pdf is a draft map produced to support planning
- Ecosystem Management Draft Map Set - the following maps sets were developed to support planning discussions about how to fully implement Salmon Recovery planning in the Stillaguamish River floodplain, while also protecting agricultural landscapes and production. The floodplain landscape was divided into four units, to improve resolution. Maps are 24 x 36 inch 300 ppi PDF, approximately 20-25 MB each.
- The Parcel Series shows property boundaries over aerial photographs, with depressions, topographic flow pathways, and watercourses.
- The Elevation Series shows water features over a digital elevation model for observing more details of floodplain scrolling and restoration opportunities.
Notes
- Stillaguamish Valley Protection Initiative - a local initiative to protect open space, agriculture, water quality and salmon habitat in the Stillaguamish Valley.
- Snohomish County is leading a Pollution Identification and Control program to manage fecal and nutrient pollution of shellfish beds from agricultural operations.
- Stillaguamish Delta is downstream.
- Church Creek Watershed and Pilchuck Creek Watershed are the major tributaries from the north.
- Portage Creek Watershed and the Cougar Creek Watershed enter from the south.
- The Interstate 5 causeway provides a natural hydrologic boundary upstream
- The Upper Stillaguamish Floodplain lies upstream between I-5 and the confluence of the forks.
- This is among the most productive farmland in Western Washington.
- 2014 Article in Everett Herald describing City of Stanwood response to high flood risk.