The Upper Laguna Madre is a long narrow bay that runs south from Corpus Christi Bay past Baffin Bay to the Land cut. Its Spanish name is translated to mean "Mother Lagoon". There are no significant freshwater flows or cuts from the Gulf of Mexico into the Laguna Madre, giving it a higher salinity than most area bays. Its somewhat closed nature also means that the fish populations tend to stay with in the Upper Laguna Madre and Baffin Bay system year round.
The shallow grass flats, shallow cuts and spoil islands created with the dredging of the Intracoastal Waterway which runs the length of the Laguna Madre are the key structure that make it a popular area to catch redfish, trout, flounder, and black drum.