[3] It is plausible Lough Marrave served a pagan sacrificial purpose, and the Keshcarrigan Bowl was deposited there as a ritual offering.

The lake is very small and shallow, covering a surface-area of about 0.1 square kilometres (0.0 sq mi), and might be considered a continuation of Lough Scur, as they share the same level and connected by a half-mile channel.

The ecology of County Leitrim waterways, such as Lough Marrave, is threatened by zebra mussel and other invasive species.

[5] The primary human settlements at Lough Marrave are Keshcarrigan and Fenagh villages.

Lough Marrave is bounded by the townlands of Gubroe to the south and east, Killmacsherwell to the north, and Rossy to the west.