Lower Skykomish Floodplain Land Strategy

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This effort assessed floodplain parcels in the Lower Skykomish River Valley, approximately downstream of the [[City of Goldbar] to the confluence of the Snohomish River. The effort was developed to support integrated large-scale floodplain management. The effort gathered existing data developed during early activities of the Snohomish Sustainable Lands Strategy and is an example of an attempt to develop a basis for landscape-scale integrated floodplain planning and design in an attempt to achieve Integrated Floodplain Management.


  • Funded by Floodplains by Design led by Snohomish County with support from ESA
  • The landscape was assessed for potential value as farmland, for Salmon Recovery or for Flood hazard reduction, as well as integrated criteria.
  • large portions of the Lower Skykomish have competing priorities, such that integrated criteria doesn't answer question, but informs how we think as we approach parcels.
  • The project proposes different implementation pathways, where depending on the potential of a parcel
  • Generated decision support tool using a GIS web map that includes integrated criteria.
  • The project proposes a diverse tool kit, including: farmland conservation easements, acquisition, parcel subdivision, alternative farmland acquisition, channel migration easements, use of CREP, or voluntary projects on private land for habitat or agricultural resilience.
  • Additional flood hazard resources are available at https://snohomishcountywa.gov/5763/Flood-Hazard-Mapping