Every named river in the Adirondack Park — the Hudson, the Moose, the Raquette, the Sacandaga, and the rivers that drain the High Peaks.
The Jessup River drains the southwestern corner of the Speculator region — a quiet, low-traffic watershed that feeds into Lake Pleasant through a series of wetlands and second-growth forest. It's not a destination river in the trout-fishing or whitewater sense, but it's the kind of water that shows up when you're poking around old logging roads or snowmobile trails south of town, threading through alder thickets and beaver meadows. The upper stretches are more creek than river; the lower miles widen and slow as they approach the lake. This is exploratory water — bring a topo map and expect to bushwhack if you're serious about reaching it.