TRANSACTIONS CONCERNING AN ISLAND, FLAT, OR SUBMERGED LAND.
Tex. LOC. GOV'T Code § 253.002.
in effect(a) A municipality may sell, convey, lease, or provide an option to all or a part of an island, flat, or submerged land the municipality owns and may make development plans and contracts for these purposes, at the times and on the terms that the governing body determines are proper and in the public interest, if the state or the Republic of Texas relinquished its interest in the land to the municipality before April 23, 1953.
(b) For a home-rule municipality the charter of which authorizes a referendum on such a transaction, the governing body may make the transaction without advertising or receiving bids, but the transaction may not take effect unless either it has been approved at a referendum ordered for that purpose or the period for the submission of a petition for a referendum on the transaction has expired.
(c) This section does not grant or convey to a municipality title to oil, gas, or other minerals.
(d) This section prevails over any conflicting charter provision of a home-rule municipality.