What boat are you running?
Inside the flats are going to range from 12" to 24" with an occasional deeper area in the 3' range.
From the Encinal Peninsula on southward there is a deeper area ranging 3-5'. There are some areas that are shallower. Study Google Earth and know where those areas are. Make a waypoint for shallow areas to avoid and mark them as danger.
good luck, and be careful.
Nauticstar bay boat, but we like to fish the shorelines sometimes depending on conditions....12-24 is scary but 3 is good....seems like there is an opening with some markers down the ICW to get to king ranch shoreline, seems safer than going from encinal penn....thanks for advice