Gauge Description:

From the Northeast Paddlers' Message Board: The flow is regulated by Wilder Dam 7 miles upstream. For advanced release info, call 1-888-FLO-FONE (1-888-356-3663). Select #5. Favorite playboat levels are from 3000 - 5000 (between two and three tubes on the phone), but there is good class I - III terrain for all paddlers to work out with at most levels above 700. From the time they release at the dam, it takes about 3-4 hours to get to the playspot. The greater the level change, the longer it takes.
For current and the next days release information from Wilder dam go to the Waterline FlowCaste website. You can also call 1-800-452-1737 and at the prompt key in 505121 for the same web based information over the phone.

The basic features are:
The Sign Wave
Almost directly under the large danger sign on the NH side at the top of the rapid
A dynamic wave with good eddy service
Appears at levels above 11K.

The center wave
Located in the main channel between the tail of the island and the NH shore
The main summer playspot for spins, bow surfing and playboating with good eddy service
Appears at levels between 700 and 5000.

The Ledge
Formed by the ledge extending from the tail of the island to the NH side
Forms a tricky surf difficult to attain, but gives thrilling rides
Appears above 2000, eddy service washes out above 3500

There are many other on the catch on the fly waves at levels above 2000 and the area is an execellant place for a beginning boater to practice moving in and out of conflicting currents at all levels except spring extremes. There are special features during spring levels (as high as 55K) but care should be taken before ice-out as the falls are runnable, but the bay can be iced in