One of the best summer play spots in New England. Located at the end of Coolidge Run, the river piles up against a ledge then funnels into slack water below causing a series of waves at higher levels and a surfing hole at low levels. Typical summer time low levels of 300 cfs to 500 cfs provide a nice hole for surfing, side surfing, and many of the new play boat manuevers. Above 900 cfs the hole turns more into a wave. At 1500 cfs there is a nice wavetrain the forms with the best surfing at the top. Enders up against the rock are best at 800 to 1200 cfs.