Great Sacandaga Lake.

Great Sacandaga Lake is engineered. The Conklingville Dam, completed in 1930, raised the Sacandaga Valley by about thirty feet and produced a long, narrow, twenty-nine-mile reservoir that now functions as the Hudson River's primary upstream flood-control basin. Several pre-dam villages — Day, Edinburg, Osborn Bridge, Sacandaga Park — were either flooded outright or relocated. A handful of foundation walls and the occasional cellar hole are still visible on the lake bed in dry years.

The reservoir produces a different kind of Adirondack experience than the natural lakes do. The shoreline is more developed, more populous, and less wilderness-protected than the lakes of the central or High Peaks regions. Northville sits at the head of the lake — the southern terminus of the Northville-Placid Trail — and is the working access village. Edinburg and Day on the western shore, and the small communities along the south shore, are summer-camp and second-home communities, with the Sacandaga Outdoor Center as the main paddling-and-rental cluster.

What Great Sacandaga does that the natural lakes can't is scale. It is the largest body of water in the southern Adirondacks. It is fishable for walleye, pike, and bass at a level that compares to the upstate's largest reservoirs. It is the only southern-Park lake big enough for serious sailing. And it is forty miles from Saratoga Springs — the closest large body of recreational water to the Capital Region. For the audience that wants Adirondack-edge water without committing to a four-hour drive, this is the lake.