Portage topographic map

Average elevation: 37 m

Average elevation: 36 m

Average elevation: 33 m

Average elevation: 1,974 m

Average elevation: 1,996 m

Average elevation: 12 m

Mears Field (3W5), formerly known as Concrete Municipal Airport, is located one mile south of Concrete at an elevation of 267 ft MSL.

Average elevation: 125 m

Average elevation: 32 m

Average elevation: 14 m

Average elevation: 109 m

Average elevation: 9 m

Average elevation: 187 m

Average elevation: 17 m

Average elevation: 14 m

Average elevation: 49 m

Average elevation: 12 m

Average elevation: 2,146 m

Average elevation: 19 m

Average elevation: 37 m

Average elevation: 9 m

Average elevation: 12 m

Average elevation: 19 m

Average elevation: 17 m

Average elevation: 33 m

Average elevation: 32 m

Average elevation: 53 m

Average elevation: 37 m

Average elevation: 249 m