The Columbia Basin dive region centres on the Columbia River and a cluster of freshwater sites near Richland and the Tri-Cities area. The standout site is the Titan I Missile Silo, a submerged former missile facility requiring advanced certification for its overhead cave environment. River drift dives at Howard Amon Park and Columbia River Canyon demand strong buoyancy control and careful exit planning given powerful currents. Canoe Lake offers a calmer muck dive with milfoil beds, and a speedboat wreck rounds out the site mix. Water temperatures fluctuate broadly across seasons, and cold winter conditions narrow the comfortable diving window.
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Fin maps 5 sites in Columbia Basin (5 scuba diving sites).
