It connects with Drumaleague Lough by a 0.8 kilometres (0.5 mi) navigable stretch of the Shannon–Erne Waterway.

[1] This elliptical shaped very lake is small, covering a surface-area of about 0.06 square kilometres (0.0 sq mi) and measures 350 metres (1,148.3 ft) from the north-east to south-west shore, with 140 metres (459.3 ft) wide.

The ecology of Lough Conway, and other county Leitrim waterways, are threatened by zebra mussel and other invasive species.

[3] From at least the 18th century a sluice was used to reserve a water supply from Lough Conway for the nearby Corn Mill situated on Kilclaremore townland.

[1] This corn mill was "very useful to the inhabitants of the district",[4] so c. 1845 – c. 1853 the branch drain between "Ulster Canal" and Lough Conway was improved.