The Whitewater River Run is a popular destination for kayakers and rafters in Massachusetts and Connecticut. The ideal streamflow range for this river is between 200 and 500 cubic feet per second (cfs), which provides optimal conditions for Class II and III rapids. The river is broken up into two segments, with the first segment running from the Massachusetts-Connecticut state line in Hartland to the Colebrook Reservoir, covering a distance of approximately 6.5 miles. The second segment runs from the Colebrook Reservoir to the confluence with the Salmon Brook Main Stem, covering a distance of approximately 10 miles.

The river is classified as Class II and III, with specific rapids/obstacles including "The Potholes," "The Notch," and "The Steps." These rapids provide a thrilling ride for experienced paddlers, but can be challenging for beginners. It is important for paddlers to have appropriate safety equipment and experience before attempting the Whitewater River Run.

There are specific regulations in place for the Whitewater River Run, including a permit requirement for commercial outfitters. Additionally, there are restrictions on the use of motorized watercraft on the river. Paddlers should also be aware of the Leave No Trace principles and take steps to preserve the natural environment of the river.

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