The Laguna Madre is a long, shallow, hypersaline lagoon along the western coast of the Gulf of Mexico in Nueces, Kenedy, Kleberg, Willacy and Cameron Counties in Texas, United States. It is separated by the roughly 20-mile (32 km) long Saltillo Flats land bridge into Upper and Lower lagoons. The two are joined by the Intracoastal Waterway, which has been dredged through the lagoon. Cumulatively, Laguna Madre is approximately 130 miles (209 km) long, the length of Padre Island.