Tongue River Reservoir State Park Photos

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The Tongue River Reservoir State Park is a Montana state park. The 12 mile long reservoir is located 6 miles north of Decker, Montana. It is fed from Tongue River. The park occupies 642 acres at an elevation of 3468 feet.ecreation includes boating, fishing and wildlife viewing. While the lake is open year round, the marina is only…
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Tongue River Reservoir State Park