TagDes Moines Creek(169)

The Des Moines, WA City Council considered a staff recommendation to transfer review of the Des Moines Creek Business Park West Master Plan (LUA2022-0044) from the Council to the city's Hearing Examiner. The proposed 30-acre development near South 216th Street would include a 402,380-square-foot industrial building and requires complex environmental review, including a variance to fill ravine sidewalls and potentially realign a stream. Due to the technical complexity of the land use and environmental issues involved, staff and the City Attorney recommended consolidating the Master Plan review with the required variance before the Hearing Examiner.

This presentation by King County Department of Natural Resources & Parks outlines a holistic approach to restoring Des Moines Creek and its surrounding watershed, located in King County, Washington. It covers basin planning, environmental modeling, regulatory considerations, and project costs and scheduling. The project aims to address watershed health through comprehensive assessment and coordinated restoration strategies.

This April 2023 presentation by Erin Nelson outlines options for the Des Moines Creek Basin Committee moving forward, focusing on decisions to be included in the next Interlocal Agreement (ILA). The meeting agenda covers a review of past studies and committee accomplishments, discussion of what has worked and what needs improvement, and selection of workable options for the basin's future management. The document includes maps and imagery related to infrastructure features such as the Northwest Ponds, Tyee Pond, sediment traps, and flow bypass pipes within the Des Moines Creek watershed.

This document classifies and describes the various wetland types found within the Sea-Tac Airport project area, using both the Cowardin (1979) and Hydrogeomorphic (HGM) classification systems. It identifies forested, scrub-shrub, emergent, aquatic bed, and riverine wetlands across three drainage basins — Miller Creek, Des Moines Creek, and Walker Creek — listing the specific wetland units belonging to each category. The classifications support environmental impact assessment and mitigation planning associated with airport development activities.

This document summarizes the environmental wetland impacts associated with airport expansion projects near Sea-Tac Airport, detailing acreage affected across four creek basins — Miller Creek, Walker Creek, Des Moines Creek, and Green River. It breaks down impacts by wetland vegetation type (forested, shrub, emergent, and open water) and hydrological classification (depressional, riverine, and slope), with total impacts ranging from 4% of the Walker Creek project area to 100% of the Green River area. The tables also distinguish between temporary and permanent wetland impacts as determined by the U.S. Army Corps of Engineers, covering features such as the Third Runway and Runway Safety Area extensions.

This NPDES permit fact sheet for Seattle-Tacoma International Airport details the locations and receiving waterways for all stormwater and industrial wastewater discharge outfalls at the facility. It covers three categories of discharge: industrial wastewater flowing to Puget Sound, stormwater from industrial activities flowing to local waterways such as Des Moines Creek, Miller Creek, and Northwest Pond, and stormwater from construction activities discharged to Des Moines Creek, Miller Creek, Walker Creek, and Gilliam Creek. The document lists both existing and future planned outfall locations with precise latitude and longitude coordinates for each discharge point.

This WSDOT discussion document from November 2021 shows a planning map for the SR 509 Puget Sound Gateway Program's new expressway project, spanning from 24th Ave S to S 188th St near Des Moines Creek Park in the City of SeaTac. The map highlights the proposed highway alignment (shown in red) running adjacent to Des Moines Creek Trail Park, identifying wetland areas, contour elevations, and nearby features such as an Amazon warehouse and the Lake to Sound Trail. The project represents a major infrastructure expansion in the SeaTac area that would affect the Des Moines Creek Park corridor and surrounding natural resources.

At a March 9, 2021 City Council meeting, the City of SeaTac considered a motion to authorize an amendment to an Interlocal Agreement with King County to receive a $500,000 Conservation Future Tax Levy grant, matched equally by the City, for acquiring approximately 8 acres of surplus Washington State Department of Transportation land adjacent to Des Moines Creek Park. The acquisition aims to expand open space, improve trail access, add a new trailhead with educational amenities, and preserve forested land along a salmon-bearing stream. The City has been pursuing this land purchase since 2018 as part of its Parks, Recreation, and Open Space (PROS) Plan.