The greatest waterfall the world has ever seen? That's what geologists tell us happened 20,000 years ago when a large glacial lake in Montana broke through it's 2000 foot tall (641 m) ice dam and flooded eastern Washington and Idaho with 600 cubic miles of water (2,500 cubic km). The flood water rushed over this 400ft tall (121 m) ridge at 65mph (104 kmh), generating a flow roughly 10 times larger than the flow of all the world's rivers combined! This happened roughly 40 times over a 2000-year period.

Today, Dry Falls is a state park with hiking trails, water sports and campgrounds. Stop by the visitor's center for more info.

Photo by Mark Rentz

Grant County mountain rentals

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December 2025

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January 2026

Find the best place to stay - Grant County

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Premier Host

Endless views with easy access concerts at Gorge, Cave B Winery and SageCliffe

Sleeps 8 · 2 bedrooms · 2 bathrooms

Dock

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Spacious Lakehouse Getaway. Private Dock with large fenced Backyard and Gameroom

Sleeps 14 · 5 bedrooms · 3 bathrooms

Front patio with hot tub, seating, dining table and commercial firepit.

CaveB Lake House - come for concerts, or a relaxing get away in the sunshine

2 bedrooms · 2 bathrooms

Crusher cone gas piped fire pit

Premier Host

New Custom Multi Master + Sleeping Room Golf Course Home w/ Outdoor Living Area

Sleeps 12 · 4 bedrooms · 3+ bathrooms

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