Mulroy Bay (Irish: Cuan na Maoil Ruaidh[1]) is a relatively small bay / sea loch on the north coast of County Donegal, Ireland.
Mulroy Bay is the most convoluted of the marine inlets in north-west Ireland.
This channel varies in width and depth, with three significant narrows only 100–150 m across, where the current reaches maxima of 3-5 knots.
It opens into the Broad Water, an open shallow sea lough 8 km from north to south and 2.5 km from east to west, generally less than 20 m in depth and with many small rocky islands and islets.
[2][3] Settlements founded on the bay include Milford, Kerrykeel and Cranford.