Stream Thundering Brook

Greater watershed Ottaqueechee River (possibly) → White River (I think) → Connecticut River → Long Island Sound

Height I'm guessing the upper drop is about 8m/26ft, the cascades in the middle about 10m/33ft and the bottom bit about 16m/54ft. It's a reasonably tall waterfall by Vermont standards, just broken up.

Form A long series of waterfalls, more than a single one.

Volume Varies due to a mini hydro scheme on the brook. I don't think it ever runs completely dry, but normal volume is probably higher than what we got, and it apparently can go pretty nuts in flood.

General location near the Killington ski resort area

Specific location A pulloff on River Road in Killington about 1/2 km north of Thundering Brook Road; where the road intersects the Appalachian Trail.

Trail access The AT crosses the headwaters of what I think is the Ottaqueechee River on a boardwalk and goes right past the bottom of the falls. Then it climbs up parallel to them, although you need to do a bit of scrambling to see the upper bits, and intersects another road (Thundering Brook Road). You can probably access the falls from that road as well, via another small pulloff just after the brook. Total distance from either end is not much more than a couple hundred meters.

 

Thundering Brook Falls is a waterfall that gives off the impression of being secluded and off the beaten path, despite being roughly in the middle of a rural community only a short distance from a popular ski resort. There aren't any signs indicating its existence (we had to ask for directions at the local town offices) and wrong turns are likely to lead one down back roads to nowhere in particular, or into people's back yards. In fact this fall itself (and associated hydro scheme) appears to be in someone's back yard, though the public presumably has right of way via the AT.

 

Due to the human intrusion, the fall can suffer a bit, not only due to low flows but also a large water pipe prominently visible along the upper section. If you happen to visit the fall during a period of low flow expect the lower sections to be somewhat underwhelming, though they can be impressive in high flow. Conversely, I've seen pictures of the uppermost drop at high flow and think it actually looks better in lower water. Obviously, opinions will vary. Still, if you're in the area and in desperate need of some negative ions it's worth seeking out whatever the flow conditions. Photographers may prefer to wait for overcast conditions or sunset.