Lake Tapps News

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Update from Cascade Water Alliance on Flooding and Lake Tapps Reservoir Levels – Dec. 16, 2025

Cascade has been watching the flooding issues very closely, and we are very concerned about what is happening to our neighbors in Pacific. Cascade’s headworks, where water is diverted from  >>

Update from Cascade Water Alliance on Emergency Weather Event and Lake Tapps Reservoir Levels – Dec. 11, 2025 at 9:30 AM

Cascade is actively monitoring and managing Lake Tapps Reservoir water levels during the state-declared emergency atmospheric river weather event. Due to an ongoing construction project at Cascade’s headworks, no water  >>

2025 Lake Tapps Reservoir Drawdown – September 8, 2025 Update

Cascade Water Alliance previously announced the Lake Tapps Reservoir fall water levels and drawdown plan on August 18. Cascade held reservoir levels higher than normal this summer due to a  >>

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Lake Tapps Reservoir water levels, fall drawdown schedule announced

Lake Tapps, WA – Cascade Water Alliance has announced the 2025 Lake Tapps Reservoir water levels and fall drawdown plan. Due to a construction project at the White River diversion  >>

Phase 2 Milfoil Treatment Week of August 11

Phase 2 of Cascade’s treatment of herbicide ProcellaCOR® treatment is anticipated for the week of August 11. A map of the treatment areas are below. Residents in planned treatment areas  >>

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