Brazoria County topographic maps

Average elevation: 18 m

Average elevation: 25 m

In 2006, the average elevation was 21.4 feet (6.5 m) above mean sea level (MSL), which reflects a 0.168-inch (4.3 mm) negative deviation compared to a 1998 study. This decrease is believed to be caused by the extraction of groundwater (9% of total declination), the extraction of petroleum products (88% of…

Average elevation: 8 m

Average elevation: 14 m

Average elevation: 16 m

Average elevation: 6 m

Average elevation: 9 m

Average elevation: 2 m

Average elevation: 4 m

Average elevation: 5 m

Average elevation: 2 m

Average elevation: 17 m

Average elevation: 2 m

Average elevation: 8 m

Average elevation: 8 m

Average elevation: 2 m

Average elevation: 8 m