Consultants say Weiser Lake has extreme summer phosphorus, propose short‑ and long‑term fixes

Feb 21, 2025

Whatcom County staff and consultants told residents a year of monitoring found phosphorus far above healthy targets—likely driven by internal sediment releases and watershed sources—and presented options from aeration and sediment treatment to septic upgrades and formation of a lake management district.

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Whatcom County Health and Community Services staff and outside consultants presented a draft lake management plan for Weiser Lake at a virtual public meeting, saying monitoring shows summer phosphorus concentrations far above recommended levels and offering a mix of short‑term and long‑term options.

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