Pulau Buau, flat at its N end and rising to an elevation of 28 m near its S end, fronts the bight between Tanjung Talu (or Taloh) and Tanjung Uban, about 3 miles NNW.
It is thickly wooded and with the exception of a round lump which rises in its center. It is reported to be lower than the adjacent land.
There is a white rock on the reef on its W side.
The island is bordered by a reef to a distance of about 0.1 mile. A light is exhibited from the N end of the island.
There is a reef, with a depth of 2.1m, 0.5 mile N of Pulau Buan.