Houston topographic maps

Average elevation: 15 m

Average elevation: 21 m

Average elevation: 17 m

Average elevation: 18 m

Average elevation: 22 m

Average elevation: 9 m

Average elevation: 16 m

Average elevation: 15 m

Average elevation: 35 m

Average elevation: 20 m

Average elevation: 24 m

Average elevation: 24 m

Average elevation: 21 m

Average elevation: 16 m

Average elevation: 25 m

Average elevation: 2 m

Average elevation: 16 m