Every named river in the Adirondack Park — the Hudson, the Moose, the Raquette, the Sacandaga, and the rivers that drain the High Peaks.
The Sacandaga River threads through the southern Adirondacks before pooling into Great Sacandaga Lake — a working river system that was fundamentally reshaped by the 1930 completion of the Conklingville Dam, which turned free-flowing mountain water into one of the largest reservoirs in New York. Upstream sections still run wild through Hamilton and Fulton counties, passing through state forest land and small hamlets where paddlers and anglers work the current between beaver meadows and rocky runs. The lower reaches, below the dam, offer a different character — colder tailwater flows that benefit trout, though public access varies and much of the corridor is privately held. Check DEC maps for fishing access sites if you're working the river proper; most recreational attention has shifted to the lake itself.
The Sacandaga River drains a vast watershed in the southern Adirondacks before emptying into the Great Sacandaga Lake — a system that was radically reshaped in 1930 when the Conklingville Dam flooded the upper valley and created one of the largest reservoirs in the state. Above the lake, the river splits into east and west branches, both flowing through mixed hardwood forest and backcountry that sees far less traffic than the central High Peaks. The stretch between the branches and the lake is where paddlers and anglers work the slack water and the old channel structure — access points exist but require local knowledge or a good map. If you're targeting fish, assume warmwater species downstream and work upstream from there.