Boulder River

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Boulder River rapids.
The Boulder River in Montana provides visitors with opportunities for Montana fishing, gorgeous scenery and enjoyable river floating. It is one of the most popular recreational Montana rivers thanks to its varied terrain.

The upper section features fast currents with plenty of Class III and Class IV whitewater. Secluded pools await anglers adventurous enough to find them.

30 miles downstream from its origin the Boulder River flows through the unique waterfall called the Natural Bridge Monument, disappearing entirely into the rocks before re-appearing one 100 feet away in 2 separate 100-foot waterfalls.

Below Natural Bridge, the Boulder River flows through mostly private land and out into the high plains. The current of the Boulder River slows as the countryside opens up and provides dazzling vistas of the Montana mountains. The Boulder River runs for 30 more miles until its union with the Yellowstone River near the town of Big Timber.