Des Moines Creek Basin Committee (Options for moving forward) 20230405

Decide what is important to include in next ILA. How: 1. Review previous studies, committee accomplishments, and current basin conditions. 2. Discuss what has worked well, what needs improvement, and what the overall desires are of the committee members. 3. Decide on some workable options for moving forward. Committee Origination When 1996 Original Agreement Basin Plan 2000 Interlocal Agreement 3 2007 Amended Agreement that included associated previous MOUs and ILAs Why Finish design and construction of capital facilities and share costs for projects that address surface water and fish habitat issues within the Basin, including: Regional Detention Facility By-pass Pipeline Flow Augmentation Facility (eliminated from plan in 2007) Habitat Enhancement and Restoration Projects Operation, Maintenance, and Replacement of Basin Plan projects (listed above) Who King County, Port of Seattle, WSDOT, SeaTac, Des Moines (1996) Port of Seattle, SeaTac, Des Moines, WSDOT (2007) How Project cost sharing among Committee Members based on 2007 agreement. Committee members manage projects through jurisdictional administration. SeaTac takes manages budgetary resources. Decisions are met by consensus. Accomplishments & Benefits Construction and maintenance of Regional Detention Facility and Bypass Pipe Improved hydraulic conditions in Des Moines Creek Less flooding downstream Alternative minimum flow control standard for developers (cost savings) In-stream habitat improvements In-stream restoration projects have created channel diversity and pool formation (as shown here in Phase III restoration area). Photo from Parametrix Year 3 monitoring report. Past Studies & Evaluations Water Quality Monitoring King County 2012- implemented by the Des Moines Creek Basin Committee. Designed to…

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Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]