Polk County topographic maps

Average elevation: 271 m

Average elevation: 266 m

Average elevation: 295 m

Average elevation: 265 m

Average elevation: 247 m

Average elevation: 314 m

Average elevation: 294 m

Average elevation: 259 m

Average elevation: 272 m

Average elevation: 292 m

Average elevation: 287 m

Because of its central location and relatively high altitude for central Iowa, two Doppler weather radar stations are located in Alleman: WHO-TV 13's First Alert Mega Doppler, and KCCI-TV 8's Super Doppler 8. A storm in July 2011 resulted in the radome from the Mega Doppler being torn from the structure and…

Average elevation: 303 m

Average elevation: 286 m

Average elevation: 294 m

Average elevation: 246 m

Average elevation: 286 m

Average elevation: 279 m

Average elevation: 262 m

Like most of Polk County, Ankeny exists at the bottom area of the Des Moines Lobe, a topographical landscape area, in an area known as the Bemis Advance. The Lobe was formed during the Wisconsin glaciation leaving significant deposits resulting in an area with low relief.

Average elevation: 289 m

Average elevation: 273 m