This body of water was formed by an Adirondack entrepreneur named Paul Smith as a hydroelectric power generator. Union Falls Flow is an impoundment on the Saranac River and lies immediately downstream of Franklin Falls Flow. Most of the Flow is shallow and rocky, and the water is a dark brown color, which makes navigation difficult for outboard motors.
Elevation: 1,411 feet
Area: 1,672 acres
Shoreline Length: 18.4 miles
Length: ~5.3 miles
Maximum Depth: 25 feet
Maximum Width: 1 mile
There is an informal beach/hand launch on the north end of the lake off of the Union Falls Road. There are rocks at the launch that can make launching a boat difficult.
Walleye, northern pike, yellow perch, pumpkinseed, smallmouth bass, brown bullhead, largemouth bass, fallfish, and rock bass
Union Falls Flow is actually a reservoir and has numerous stumps on the bottom. Try finding the old river channel to help you find the fish. Walleye and yellow perch fishing is the most popular. A 2009 fisheries survey found smallmouth were abundant, and there were also numerous average sized panfish.