Union Bay is located in the
Alexander Archipelago
The Alexander Archipelago (russian: Архипелаг Александра) is a long archipelago (group of islands) in North America lying off the southeastern coast of Alaska. It contains about 1,100 islands, the tops of submerged coastal m ...
within the
U.S. state of
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...
. It is situated on the northeast side of Lemesurier Point, the south point at the entrance to
Ernest Sound
Ernest Sound is a strait in Southeast Alaska, U.S.A. It extends southwest, from the mouth of Bradfield Canal to Clarence Strait, separating Wrangell and Etolin Islands from the mainland. It was first traversed and charted in 1793 by James Joh ...
. It is wide at the entrance, at its head, and is about long. At its head is a large lagoon, mostly bare at low water, into which empties a large stream. The waters of the bay are deep, but there is anchorage with good protection from southward, on the east side of the head of the bay, in about 18 fathoms. There is a rock with a depth of in the middle of the bay's entrance and northward of Lemly Rock.
References
;Bibliography
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Bays of Alaska
Bodies of water of Wrangell, Alaska