The Sanctuary at Costa Grande is a 800 acre residential canal subdivision and marina. The project site is located adjacent to the Gulf Intracoastal Waterway (GIWW), approximately 4.5 miles west of Port O’Connor, in Calhoun County, Texas. Within the 800 acres, they are constructing 150 acres of open water (basins and channels) by mechanically excavating approximately 3.5 million cubic yards of material that will be used to raise adjacent areas for use as residential lots.

The shoreline of the created basins and channels is bulkheaded with over 5 miles of concrete panel bulkhead. The channels are up to 1000 ft wide and between 6ft and 7ft deep at MLT. Two entrance channels connect the basin and channels to the GIWW. The entrance channels are 150 ft wide and 7ft deep at MLT. There are boat slips adjacent to the residential lots, and within the proposed marina. The majority of the slips will be covered.

There is a 3 lane boat ramp and three fishing piers, and a several park areas around the marina. The east basin and west basin within the development have access to an amenity island which features an infinity swimming pool, clubhouse, tennis courts, basketball court, children’s splash park, Marina building, and numerous barbeque areas.

The subdivision is entered via a road that crosses Live Oak Bayou and associated wetlands located north of the subdivision. click here for map