The Ambajejus Falls to the End of North and South Twin Lakes whitewater river run in Maine is a popular destination for experienced kayakers and rafters. The ideal streamflow range for this run is between 1,200 and 2,000 cubic feet per second. The class rating ranges from III to IV, with some Class V rapids during high water periods. The segment mileage is approximately 10 miles.

One of the most notable rapids on this run is Ambajejus Falls, which is a steep, 25-foot drop that requires precise navigation. Other rapids to watch out for include The Fingers, which is a series of narrow channels that require technical maneuvering, and the Cribworks, which is a rocky area that can create challenging hydraulics.

There are regulations in place for this area, and all boaters are required to obtain a permit from the Maine Bureau of Parks and Lands. Additionally, visitors should be aware of the Leave No Trace principles and carry out all trash and waste. The area is also a protected wilderness, so camping and fires are only permitted in designated areas.

Overall, the Ambajejus Falls to the End of North and South Twin Lakes river run is a thrilling adventure for experienced paddlers. It is important to check water levels and follow all regulations to ensure a safe and enjoyable trip.