AUSTIN – Areas TX-19, 20 and 21 of Lavaca Bay will be closed to all oyster harvest effective January 23, 2016 due to low abundance of oysters in these areas. Chapter 76, Parks and Wildlife Code, and the Oyster Management Proclamation, Section 58.21(c)(1), provide for the emergency closure of an area to oyster harvesting when it can be shown that the area is being overworked or damaged.