Skip to main content

Cemetery Pond Wetland Protection and Restoration

Formerly known as the May Creek Tributary 291 Stream Basin Retrofit Project.

Save the Date: Cemetery Pond open house on May 14th

King County open house and final design update for the Cemetery Pond wetland restoration project

DESIGN PRESENTATION AND OPEN HOUSE
In-Person and Online

May 14, 2025
In-person, 5:30 – 7:30
Online, 6:00 – 7:30

Hilltop Heritage Elementary
1075 Duvall Ave NE, Renton, WA 98059

From 6:00 p.m. – 7:30 p.m. King County will present the final design for the Cemetery Pond wetland restoration project and host a Q&A. This is your opportunity to see the progress on this important restoration work, share your thoughts and feedback on the Stormwater Park.

Sign up for project updates to your email or mobile phone.

People and outdoor shelter in a grassy meadow with wildflowers.
Spring work party, 2024

Find out more about the project and how to get involved from a recent King County noxious weed blog post.

Our design team is available to attend community meetings, schools, or other events in the broader May Creek and Cemetery Pond wetland areas. Do you have a meeting you'd like us to come to? Invite us to attend at mmcnair@kingcounty.gov.

Background

May Creek is a stream where Chinook salmon begin their lives and return to spawn. Chinook salmon are a keystone species; a species that hold together the web of relationships in an ecosystem. They play a critical role in supporting and maintaining ecological health, are key to resident orcas’ diet and in the social fabric of First Nations and tribal culture. Chinook salmon (also known as king salmon) are listed as threatened under the Endangered Species Act.

Cemetery pond wetland in October 2022.

Cemetery Pond wetland in October 2022.

As a natural floodplain, May Valley historically experiences periodic flooding. Flooding has worsened in the valley as climate change has made local weather patterns more intense, and development has increased impervious surfaces, increasing stormwater flows to Cemetery Pond and May Creek.

Development activities in May Valley have degraded stream and wetland habitats. Almost every one of the basin’s nearly 80 identified wetlands have been disturbed by deforestation, filling with soil or other material, draining, agricultural practices, or buffer removal. Filling wetlands increases stormwater runoff, peak stream flows, and sediment and pollutant runoff to streams, causing the decline of local habitat. Over time, approximately two acres of the Cemetery Pond wetland area was filled.

Cemetery Pond has a direct influence on water quality and habitat downstream. The 2001 May Creek Basin Action Plan (1.7 MB) recommended enhancing and restoring the Cemetery Pond wetland at the headwaters of May Creek near SE 128th and 165th Ave SE, Renton, WA.

Value of restoration and protection

The table below gives examples of why it is important to protect and restore the Cemetery Pond wetland.

Problem Benefits achieved by restoring the natural wetland
Flooding and pollution
  • Wetlands filter and trap sediment and pollutants.
  • Wetlands soak up large amounts of water and release water more slowly into downstream systems, keeping streams flowing, and recharging groundwater aquifers
  • Restoring the Cemetery Pond wetland will slow and filter rainwater runoff, making it safer for people, fish and wildlife.
Degraded habitat for salmon and other wildlife
  • Wetlands provide fish and wildlife habitat. Protecting and restoring streamside vegetation (buffers) on the wetland helps support the food web and improve water quality.
  • By developing a long-term plan to fight invasive species at places like Cemetery Pond wetland, we will protect our investment in this healthy stormwater and habitat system.
Equitable access to greenspace and parks
  • Everyone in King County deserves access to greenspace in their communities.
  • Green space, parks and restoration areas provide health benefits for human visitors, habitat for animals, and a buffer against climate change.
  • Protection of green spaces promote healthy communities, one of King County’s Clean Water & Healthy Habitat goals.
Climate Change
  • Protecting and restoring flood resistant ecosystems like wetlands helps protect homes, businesses and other economic infrastructure.
  • Wetlands improve climate change resiliency by absorbing large rainfall events, preserving trees and vegetation and cooling the area around them

Cemetery Pond wetland in December 2022.

Cemetery Pond wetland in December 2022.

King County has acquired properties from interested landowners adjacent to Cemetery Pond. The 30% (and pending final) design for restoring the wetland areas previously filled for development is available.

Community involvement is fundamental to Cemetery Pond wetland restoration and preservation work.

  • Since 2007, local partners and residents have actively maintained and advocated for Cemetery Pond.
  • The community, neighbors and volunteers from the Community Alliance to Reach out and Engage (C.A.R.E) continue to help restore the habitat by removing invasive weeds in the Cemetery Pond Wetland.
  • For information about getting involved with C.A.R.E maintenance at the Cemetery Pond, contact highlands_neighbors@hotmail.com.

Investigation, design, and permitting phase

The County started the site investigation, design, and permitting phase of this effort to protect and restore the wetland in 2022. This phase will improve stormwater management by designing options to remove about two acres of historic fill.

The goal is to expand the wetland and restore required planting buffers while reducing maintenance cost through sustainable design practices and community stewardship.

The existing wetland is approximately 7.6 acres with 5.4 acres of buffer. The project will remove about two acres of fill, depending on the results of community co-design, permitting, and construction funding.

Project goals

  • Help restore the wetland. The project will restore the natural functions of soils and native plants that help slow and absorb rainfall, reduce flooding, and provide habitat and green space.
  • Provide amenities for the community. During development of the design, the County will work with neighbors and the community on the design of stormwater park amenities for the Cemetery Pond wetland restoration. The project will consider improved public access, and stormwater park amenities (educational signs, benches, waste bins, etc.).
  • Create a stewardship plan for long term maintenance of the wetland area. Continued community stewardship will improve habitat by removing invasive species from the wetland and buffer to help native plants thrive and supporting a high-functioning wetland habitat. We welcome participation in the protection, restoration and maintenance of this important wetland.
  • Expanded protection through continued property acquisitions with interested landowners. If you are interested in discussing the sale of your property with King County please contact King County Open Space Acquisitions. We are committed to reaching out to neighborhood property owners and other interested partners.
Three people removing noxious weeds with loppers at Cemetery Pond wetland.
Volunteers removing blackberry bushes at the Cemetery Pond project site. 

Timeline

Project benchmark Community engagement Timing
Site investigation N/A October 2022 - March 2023
30% project design Community kickoff meeting and onsite work party December 10, 2022
Onsite work party June 10, 2023
Community input design open house August 22, 2023
90% project design Onsite work party October 28, 2023
Final project design Onsite work party June 29, 2024
State Environmental Policy Act (SEPA) September 2024
Onsite work party October 19, 2024
Community open house May 14, 2025
Final permitting Onsite work party 2025 (TBD)*
100% project design N/A August 2025
Construction N/A Spring 2026 – Spring 2027**
Open to public Stormwater Park opening Summer 2027 – 2028***
Maintenance Onsite work party opportunities Ongoing

*Announcements for community work parties and design input sessions will be sent through email.
Sign up for project updates to your email or mobile phone.

**Contingent on funding and permits

***Contingent on plant establishment

Partnerships

We welcome the community’s partnership to advance stewardship of this critical natural resource and will continue reaching out to neighbors to encourage participation in the restoration and maintenance of this wetland.

expand_less