The Lavaca River is a navigable river in Texas. It begins in the northeastern part of Gonzales County, and travels generally southeast for until it empties into Lavaca Bay, a component of Matagorda Bay.
The navigable Texas river's name is a corruption of Rivière des Vaches ("Cow River"), by French explorer René-Robert Cavelier, Sieur de La Salle.[1] The flagship of Jean Laffite's fleet was alleged to have been scuttled in the lower part of the river.
Hallettsville, and Moulton, Texas, are included in Lavaca-Navidad River Authority, which was established in 1941.[2]