The Whitewater River Run in Maine is a thrilling adventure for experienced paddlers. The ideal streamflow range for this run is between 400 and 800 cfs, which provides Class III and IV rapids. The segment mileage is approximately 7.5 miles, starting at the Headwaters and ending at the Confluence with the West Branch Penobscot River.

The rapids in this run include Twisted Sister, which is a Class III rapid with a rocky entrance and a narrow chute. Another notable rapid is The Minefield, which is a Class IV rapid with several large boulders and steep drops. Paddlers must navigate carefully through these obstacles to avoid capsizing.

It is important to note that the Whitewater River Run is located within the Katahdin Woods and Waters National Monument, and specific regulations apply to the area. Paddlers must obtain a permit before entering the area, and there are restrictions on camping, fires, and waste disposal. Additionally, paddlers must adhere to Leave No Trace principles and respect wildlife and natural resources in the area.

In conclusion, the Whitewater River Run in Maine offers a challenging and exciting experience for experienced paddlers. The ideal streamflow range is between 400 and 800 cfs, with Class III and IV rapids. Paddlers must navigate through specific rapids and obstacles, and adhere to specific regulations and guidelines in the area.