The Whitewater River Run from Grand Lake Matagamon to Bowlin Camps in Maine is a popular adventure for whitewater enthusiasts. The ideal streamflow range for this run is between 500-1500 cfs, although it can be run at higher levels with experienced guides. It is rated as a Class III-IV run with a total segment mileage of approximately 10 miles.

The river features a variety of rapids and obstacles, including the "Whirlpool" and "Double Drop" rapids. The "Whirlpool" is a Class III rapid with a large eddy that can be used for scouting the rapids ahead. The "Double Drop" is a Class IV rapid that requires precise maneuvering through a narrow chute with a steep drop.

There are specific regulations to the area, including a permit requirement for commercial outfitters. Private boaters are allowed to run the river but must obtain a permit from the Maine Department of Agriculture, Conservation and Forestry. There are also restrictions on camping and fires along the river, so visitors must plan accordingly.

Overall, the Whitewater River Run from Grand Lake Matagamon to Bowlin Camps is a thrilling adventure for experienced whitewater enthusiasts. It is important to check river conditions and permit requirements before embarking on the journey. Sources for this information include the Maine Department of Agriculture, Conservation and Forestry and local outfitters.