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Lake guide

Ramps

Bridge Bay Marina Boat RampBridge Bay Marina, Yellowstone National Park, WY 82190 · NPS (Xanterra-operated marina) · main developed motorized ramp + slips, fuel, ranger station; on-site AIS inspection required to launch. Season Memorial Day–Oct 31. verified live 2026-06-10.

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Grant Village (Grant Marina) Boat RampGrant Village, Yellowstone National Park, WY 82190 · NPS · wheelchair-accessible developed ramp with trailer parking; motorized + paddling launch on West Thumb. Daily AIS inspection at the ramp; season Memorial Day–Oct 31. verified live 2026-06-10.

MapInfo

Sedge Bay LaunchNPS · parking-lot kayak/canoe put-in on the east shore (non-motorized; no developed ramp). Boat permit + AIS inspection still required. East shore builds large afternoon SW-wind waves — launch early. verified live 2026-06-10.

MapInfo

Charts

Depth chartUSGS SIM 2973 — Bathymetry & Geology of the Floor of Yellowstone Lake

PDFInteractive

Contact & rules

Bridge Bay Marina (Xanterra)(307) 344-7311 · Bridge Bay, Yellowstone National Park, WY 82190

Call

Yellowstone Lake — NPSNational Park Service / Yellowstone National Park rules & park regulations

Open

Boating & yacht clubs

Club research pending for Yellowstone Lake.

About Yellowstone Lake

Yellowstone Lake is a 87,040-acre natural lake in Wyoming, managed by National Park Service / Yellowstone National Park. Live water-surface elevation comes from USGS gauge 06186500. National Park Service / Yellowstone National Park prohibits boating once sustained wind reaches 25 kt (29 mph). Public launches include Bridge Bay Marina Boat Ramp, Grant Village (Grant Marina) Boat Ramp, and Sedge Bay Launch.

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