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.

Construction Updates

October 1, 2018

The Zackuse Creek Project is nearing the end of construction.  The culvert under East Lake Sammamish Parkway is completed as well as the stream restoration work upstream of the culvert.  The City's contractor has the following tasks remaining:  adding compost and mulch to the bare ground where invasive plants were removed, guard rail and culvert rail installation, pavement overlay of East Lake Sammamish Parkway, clean up of staging areas, and addressing final punchlist items.  We anticipate final completion of the project by end of October.

King County Parks is continuing to work on the trail culvert and the culvert under Shore Lane.  Please go the County website for information regarding the King County Zackuse culvert project.

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

$375,000         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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