Why do they call it Boreas Ponds? After all, if you look at an aerial photograph, such as the one at left, taken by Carl Heilman II, it’s just one water body. This fact is also evident from the 1999 USGS map below.
The reason is not mysterious. Like many Adirondack lakes, the water level of Boreas Ponds has been raised by a dam. As an 1895 map indicates (it’s shown farther below), Boreas Ponds used to be three ponds connected by narrow channels.
When the state acquires Boreas Ponds from the Adirondack Nature Conservancy, it must decide whether the concrete dam should be retained.