Snohomish Watershed

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The Snohomish Watershed is the second largest watershed draining to Puget Sound, and includes the Skykomish and Snoqualmie rivers which combine to form the Snohomish near the City of Monroe, which flows through the Snohomish Delta near the City of Everett. The Snohomish Watershed is called WRIA 07 in the state watershed system, and is called HUC 17110011 in federal watershed nomenclature. The watershed includes large portions of Snohomish County, and eastern King County.

The Snohomish and Lower Snoqualmie river floodplains are very low gradient due to glacial scouring, and are continuing to fill with alluvium. By contrast, the Lower Skykomish, Tolt, and Pilchuck river floodplains have a contrasting river valley landform, with a steeper gradient, and the river working through accumulated alluvium (Collins & Montgomery 2011).

• File:Lower snohomish watershed.pdf [PDF 2' x 3'] - showing land cover, hydrology, and potential watershed units

Miscellaneous Web Sites

• EPA Surf you Watershed page
• Ecology water quality page]

Related Wiki Pages

The following wiki pages are flagged with the category 'Snohomish'

All Sites

Documents Cereghino 2007 qwuloolt wetland assessment.pdf Rice 2011 DRAFT qwuloolt monitoring plan.pdf Yang & Khangaonkar 2007.pdf Wright et al 2001 snohomish fecal coliform TMDL.pdf Savery & Hook 2003 habitat and chinook in pilchuck river.pdf USACE 2011 qwuloolt environmental assessment.pdf Haring 2002 snohomish wria 7 limiting factors for salmon.pdf SBSRTC 2004 snohomish ecological analysis salmon.pdf FCWMC 2004 french creek watershed management plan.pdf Hass 2001 snohomish ecosystem restoration opportunities.pdf Baek et al 2015 mid-spencer 60% design.pdf Snohomish County 2005 agriculture action plan.pdf Cereghino 2015 coordinated investment snohomish framework.pdf SAEDAT 2007 snohomish agricultural development strategy.pdf Flint 2012 woods creek riparian action plan.pdf Evans & Moore 2011 snohomish sustainable lands strategy framework.pdf SCB 2015 snohomish county agriculture research.pdf SEE 2015 french creek drainage district regions and ditches.pdf SBSRF 2005 snohomish river basin salmon conservation plan.pdf SCSWM et al 2015 snohomish salmon protection plan.pdf SCD 2016 riparian easement grant figures.pdf SCD 2016 riparian easement grant proposal.pdf SCSWM 2012 middle pilchuck river assessment.pdf SCSWM 2012 pilchuck river geomorphic assessment.pdf SCSWM 2012 pilchuck river habitat assessment.pdf DeVries 2015 lower snohomish geomorphic assessment.pdf Hurner et al 2016 snohomish stillaguamish LIO ecosystem recovery plan.pdf SnoCo 2014 DRAFT lower skykomish reach scale plan.pdf Meidev & Neslon 2016 qwuloolt lessons learned.pdf Dittbrenner et al 2017 snohomish coastal resilience proposal.pdf Snohomish County 2015 hazard mitigation plan PSRC 2018 regional open space conservation plan.pdf City of Marysville 1999 allen quilceda management plan.pdf Tulalip Tribes et al 2009 quilceda in lieu fee program.pdf Forterra 2018 DRAFT skykomish-snohomish rivers recreation concept plan.pdf Hall et al 2019 DRAFT snohomish monitoring plan.pdf Wright 2021 integrated floodplain management puget sound.pdf City of Everett 2001 snohomish estuary wetland salmon overlay.pdf Snohomish County 2015 diking district 6 maintenance.pdf Snohomish County 2020 smith and mid-spencer monitoring year 0-1.pdf Mauger et al 2015 snohomish downscale hydrologic projections.pdf Cardno 2020 lower skykomish channel migration zone.pdf LeDoux & Kubo 2020 snoqualmie riparian buffer task force final report.pdf Greene et al 2021 chinook salmon estuary density dependance.pdf Booth et al 2021 lower skykomish geomorphic assessment.pdf WSE 2021 snohomish hydrologic and hydraulic modelling.pdf

All Other Pages Qwuloolt Restoration Smith Island Restoration Union Slough Restoration Woods Creek Watershed Snohomish Basin Forest Ecosystem Services Pilot Project Pilchuck River Watershed Lower Skykomish Floodplain Snohomish Conservation District Coastal Blue Carbon Project Sno-Valley Tilth Snohomish Delta Ecosystem Monitoring and Evaluation Snohomish Delta Mid-spencer Island Restoration Blue Heron Mitigation Bank Marysville Mitigation Site Everett Marshlands Restoration Spencer Island Restoration Snohomish County Qwuloolt first flood.png People for the Preservation of Tualco Valley French Slough Floodplain and Watershed French creek watershed.jpg Snohomish Lord Hill Reach The Marshlands Skykomish Habitat Mitigation Bank French Slough Drainage Management French creek ditches.jpg Snohomish Schematic.png Snohomish riparian zone management pilot.png Snohomish Coordinated Investment Network ESRP 2016 Sno-Stilly Proposals Snohomish delta after.jpg Everett Riverfront Wetlands Snohomish Agricultural Resilience Lower Snohomish Reach Scale Plan Snohomish Farmland Protection Strategy Maulsby Mudflat Reconnection and Restoration French Slough Flood Control District Lower Skykomish Floodplain Design Snohomish Basin Hydrodynamic Modelling Haskell Slough Protection and Restoration Haskell slough photo series.pptx Sno-Stilly Riparian Zone Management Strategy Lower Skykomish Reach Scale Plan Snohomish County River Atlas Skykomish Braided Reach Project SnoSky Confluence DEM.jpg Snohomish Sustainable Lands Strategy Stewardship Partners Smith island dike removal.jpg Predicting Sea Level Rise Impacts on Ag Production Snohomish Agriculture Resilience Plan Snohomish Floodplain Acquisition Strategy Lower Skykomish Floodplain Land Strategy Steamboat Slough Mitigation Site Evaluating Salmon Rearing Limitations in River Deltas King County Flood Control District Cooperative Watershed Management Program (CWM) Union Slough Mitigation Estuary salmon recovery.png Ebey Island North Ebey Island Restoration Port of Everett City of Everett Diking District 6 Snohomish Estuary Restoration Effects on Temperature, Salinity, and Tides Sound Salmon Solutions Snoqualmie Valley Watershed Improvement District Tulalip Landfill Cleanup City of Lake Stevens Tulalip Tribes of Washington King County Agricultural Drainage Assistance Program (ADAP) Cherry Creek Watershed Skykomish Snoqualmie Pilchuck Places Adopt-A-Stream Foundation

All Images

• Smith island aerial 2011 NAIP NIR.png
• Delta tree recruitment.JPG
• Delta marsh recruitment.JPG
• Lower snohomish watershed.pdf
• Qwuloolt first flood.jpg
• Haskell 2015.jpg
• Snohomish lowlands.jpg
• SnohomishTSheet.tif

gravel, sand and finer materials moved and sorted by rivers and streams