Zackuse Creek Fish Passage and Stream Restoration Project


Project Description

Spawning areas for native kokanee salmon have reduced to a handful of tributaries to Lake Sammamish when once they were known to spawn throughout Lake Washington, the Sammamish River, and Lake Sammamish. The decline of the local population has been of special concern to Sammamish residents, fisheries and native tribes. Without diversity in available spawning habitat, a single localized event, whether natural or anthropogenic, could destroy the entire population. The Zackuse Creek Fish Passage and Stream Restoration project will aid in the reestablishment of Zackuse Creek as a kokanee spawning area. The project includes two primary objectives: 

  1. Replace the existing culvert under East Lake Sammamish Parkway (ELSP) so that it is fully fish passable and with design elements that emulate a natural stream bed.
  2. Restoration of approximately 400 linear feet of Zackuse Creek upstream of the culvert.

Project Updates

On May 15, 2018, the City Council awarded Pacific Civil & Infrastructure (PCI) the construction contract for the Zackuse Creek Fish Passage and Stream Restoration Project.  Construction is scheduled to begin in early July 2018 and be completed by November 2018.    

Due to funding requirements, the culverts under the King County Trail and East Lake Sammamish Shore Lane will not be part of the City project to construct the culvert under E Lake Sammamish Parkway.  That work will be bid separately by King County.

Traffic on East Lake Sammamish Parkway (ELSP) will be heavily impacted during construction of the culvert.  For safety, ELSP will be fully closed for a two consecutive week period during the summer. Noticing of road closure will be provided well in advance of closure.  Detour routes will be clearly designated.

Puget Sound Energy is expected to be working in the area on ELSP at the end of May in advance of the City’s culvert construction.

Public Outreach

Two public open houses are planned for the Zackuse Creek Fish Passage and Stream Restoration Project.  The first public open house was held on March 29, 2017 to introduce the project and receive public comment on the preliminary plans.  The second public open house is scheduled for January 10, 2018 to share the 90% design plans with the public and to receive any final public comment before finalizing the plan. On July 18, 2017, the City Council approved the plan for full road closure of East Lake Sammamish Parkway during culvert construction with planned detour routes.  The road closure, detour routes, and traffic control plan will be made available as soon as they are finalized.

Project Partners

The City of Sammamish is fortunate to work with the following partners on this regionally important fish passage and habitat restoration project: Kokanee Work Group, Snoqualmie Tribe, King County Parks, Trout Unlimited, Washington State Fish and Wildlife, Eden Glen HOA, private property owners Wally Pereyra, Peter Weber, Daniel and Laurie Ivanhoff, Gary Mahn, and Mary Ellen Stone.


Construction planned for Summer 2018.


$1.2M    Surface Water Management Capital Fund


This project is funded in part by the King County Wastewater Treatment Division (Water Works), the King County Flood Control District, and the King Conservation District.

$157,400         King County Water Works Executive Council Grant

$175,000         King County Flood Control District Flood Reduction Grant

$371,154         King County Flood Control District Sub-regional Opportunity Fund

$280,000         King Conservation District

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