Serian topographic maps

Average elevation: 18 m

Average elevation: 7 m

Average elevation: 99 m

Average elevation: 42 m

Average elevation: 55 m

Average elevation: 36 m

Average elevation: 60 m

Average elevation: 11 m

Average elevation: 13 m

Average elevation: 17 m

Average elevation: 17 m

Average elevation: 17 m

Average elevation: 59 m

Average elevation: 20 m

Average elevation: 26 m

Average elevation: 12 m

Average elevation: 87 m

Average elevation: 68 m

Average elevation: 8 m

Average elevation: 47 m

Average elevation: 45 m

Average elevation: 84 m