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Ellensburg OKs Interlocal With Kittitas County to Update Flood Insurance Maps for Whiskey, Mercer Creeks
Summary
City Council authorized an interlocal agreement with Kittitas County to submit updated FEMA flood-insurance maps (LOMR) for Whiskey and Mercer Creeks, adopting improved 2D hydraulic modeling, recent lidar and survey data and advancing a Whiskey Creek reroute feasibility study while reserving local discretion on advisory zone regulation.
Ellensburg — The City Council authorized the city manager to sign an interlocal agreement with Kittitas County on Dec. 15 to update FEMA Flood Insurance Rate Maps for Whiskey and Mercer creeks.
Rebecca Springer, the city’s water resources manager, said county and city teams integrated recent stormwater modeling, 2020 lidar, a 2025 drone survey and consultant analyses funded by FCAP and a stormwater capacity grant to produce updated two-dimensional hydraulic models. Dan Carlson, community development director, explained that maps inform regulatory floodplain…
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