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Sammamish staff present draft Pine Lake Creek Basin Plan; identifies retrofit projects, education and bog stewardship
Summary
City staff presented a draft basin plan for the Pine Lake watershed that rates basin health as generally good, identifies six capital projects (two already in the CIP), proposes three new programs including an education campaign and bog stewardship, and opens SEPA review through April 30.
City of Sammamish stormwater staff presented a draft Pine Lake Creek Basin Plan to the council on April 15, describing the basin as generally in good condition while identifying targeted retrofit projects and programmatic actions to protect water quality and habitat.
Stephanie Sullivan, senior stormwater program manager, and senior engineer Toby Kanan said the basin plan process combines data collection, watershed characterization, and community outreach to produce a prioritized list of projects and programs that can be integrated into the city's capital improvement plan and NPDES permit obligations. The draft plan is undergoing SEPA environmental review, with the threshold determination scheduled to conclude April 30; staff plan to return to council for adoption next June unless issues arise during review.
Kanan said the basin's strengths include significant wooded land cover and intact stream alignments, including Pine Lake Creek and Kanem Creek. The plan identified six capital projects; two have already been advanced into the city's stormwater capital improvement program and are under way. Other recommended projects cluster near older downstream subdivisions where pond and facility designs do not meet current standards; three of the projects are described as retrofits and one as a low-impact development pilot.
Staff also proposed three programs: an education and outreach initiative targeted to lakefront homeowners and basin residents, a property-acquisition prioritization framework for an existing city fund, and a bog-education program highlighting the basin's sphagnum bogs. Councilmembers discussed coordination opportunities with regional partners, grants (including state Recreation and Conservation Office programs), and whether a Lake Management District would be appropriate; staff said management districts are enabled by state law but are a community-driven, often difficult step and were not recommended in the draft basin plan.
The draft plan includes water-quality monitoring results that are generally favorable, though Pine Lake Creek is listed for temperature in state water-quality databases (303(d) listing). Staff encouraged public comment during SEPA review and detailed online engagement options and direct contacts for submitting feedback.
