Surface water management (SWM) provides a variety of lake monitoring and management services, including:

  • Monitor Water Quality and Toxic Algae
  • Protect & Restore Lake Health
  • Control Invasive Plants
  • Assist lake groups and residents

Protect Your Lake - Be LakeWise

Your lake needs your help to stay healthy. Find out small changes you can make on your property to protect your lake and be LakeWise.

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Algae & Toxic Algae

Volunteer Lake Monitoring

Special Projects

Living Near Lakes

Snohomish County Lake Information & Data