Nineteenth-century logging operations diverted the lake into the Penobscot River before designation of the Allagash Wilderness Waterway in 1966.

[4] In the 1850s Eben S. Coe built the timber crib Lock Dam across the outlet from Chamberlain Lake causing Chamberlain Lake to overflow southward through Round Pond, Telos Lake, Webster Lake and Webster Brook into the East Branch Penobscot River in Baxter State Park.

These changes allowed logs harvested in the upper Saint John River watershed to be floated to Bangor sawmills.

[5] Summer water temperatures range from 64° near the surface to 52° in the deepest pools.

Cold water with high dissolved oxygen concentrations provides good habitat for togue if water levels are stable after autumn spawning occurs in the rocky shallows.