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County agrees to pursue bathymetric LIDAR survey from Admiralty Inlet to Cape Flattery
Summary
Clallam County staff presented a planned bathymetric (green) LIDAR survey covering the county’s marine shoreline, describing partners, intended uses, public data access and likely timelines for data collection and processing.
Clallam County staff described an agreement to fund a bathymetric LIDAR survey — a ‘‘green’’ LIDAR capable of penetrating the water column — to map shoreline and underwater features from Admiralty Inlet to Cape Flattery.
The county said the survey will capture the upper extent of tidal influence down to mean low water, weather permitting, and that the Jamestown S'Klallam Tribe will lead technical work while Washington Sea Grant will help connect the data to state and federal users. Staff said the Puget Sound LIDAR Consortium will host the finished datasets, and that USGS and other agencies have expressed interest in using the data for modeling.
Why it matters: officials said the continuous dataset will fill a regional data gap, provide a baseline to monitor shoreline change and bluff erosion, and support planning such as shoreline master program updates. The data will be made publicly available and distributed to local, state and federal partners.
Staff explained that data collection windows depend on tides, water clarity and weather; the next feasible window is likely in August, and staff estimated processing will take a few months after collection before the county can distribute products and mapping tools to partners and the public.
The county confirmed no local matching funds are required for this state‑funded effort. County leaders asked staff to check with local partners before the flight to confirm the datasets collected meet local technical needs for bluff monitoring and shoreline planning.
Ending: Staff said they will return to the board with scheduling details after confirming the next available fly window and partner check‑ins; processed data will be hosted in the Puget Sound LIDAR Consortium and shared with state and federal modeling partners.
