Gissberg Twin Lakes

Gissberg Twin Lakes are man-made lakes created from gravel excavation for the construction of I-5. These two adjoining, rectangular-shaped lakes are surrounded by a popular 44-acre park featuring walking trails, picnic areas, and a swim area. Model boat racing competitions frequently take place on the north lake, and both lakes are popular fishing destinations. The lakes cover 27.2 acres and two-thirds of the shoreline has trees and shrubs.

Recreational Opportunities

  • Fishing
  • Parking
  • Swim Area (No Lifeguard)
  • Picnic Tables
  • Restrooms/Sanicans
  • Model Boat Racing
  • Walking Track

Fishing Information

The Washington Department of Fish and Wildlife (WDFW) maintains informational pages for each lake in Washington that include: fish stocking schedules, fishing prospect calendars, and boat launch information.

Adults (15 years and older) who wish to fish must use the South Lake with a valid fishing license. Fishing on the North Lake is reserved for youth (14 years and under).

The Parks Department requests your assistance in determining when the north lake is used for juvenile fishing. Please take two minutes to fill out this survey.

Connect with Your Lake Community

Gissberg Twin Lakes does not have a formal lake association. However, you may be able to connect with other lake area residents by looking for a Gissberg Twin Lakes community group on NextDoor or Facebook.

Lake Health and Additional Resources

As part of Snohomish County's Lake Management Program, County staff and volunteer lake monitors have been tracking the health of Gissberg Twin Lakes since 2015. 

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Bathymetric Map

Bathymetry Map