Every named river in the Adirondack Park — the Hudson, the Moose, the Raquette, the Sacandaga, and the rivers that drain the High Peaks.
Otter Creek runs through the Keene Valley township in the northeastern High Peaks — a minor tributary system that feeds into the East Branch of the Ausable River drainage. The creek takes its name from the wetland corridors and beaver activity common to mid-elevation Adirondack streams, though modern otter sightings are sporadic at best. It's not a destination water — no stocked fish, no documented access points, no trail crossings that show up on DEC or USGS maps — but it's part of the Cold River Wild Forest watershed, which means the upper reaches see occasional bushwhacking traffic from hunters and winter trapline checkers. If you're looking for moving water in Keene, the Ausable itself is the draw.