[1][2] Glenade Lough is fed by a number of streams entering at the lake's northern end.

[3][4] Fish species in Glenade Lough include roach, perch, pike and the critically endangered European eel.

[8][n 1] The ecology of Glenade Lough, and other County Leitrim waterways, is threatened by curly waterweed, zebra mussel, and freshwater clam invasive species.

[10][11] Glenade Lough is a site for the legendary beast (or cryptid) the Dobhar-chú, a very large otter-like creature believed to inhabit the lake.

A gravestone in a nearby cemetery commemorates the alleged killing of a local woman by a dobhar-chú in 1722.