LaSalle County topographic maps

Average elevation: 179 m

Average elevation: 181 m

Average elevation: 179 m

Average elevation: 194 m

Average elevation: 204 m

Streator lies within the Vermilion River/Illinois River Basin Assessment Area (VRAA) defined by the watershed of the Vermilion River, a major tributary to the Illinois River in Central Illinois, an area of mostly flat prairie. The topography of the basin is a complex collection of buried valleys, lowlands and…

Average elevation: 191 m

Average elevation: 208 m

Average elevation: 200 m

Average elevation: 204 m

Average elevation: 180 m

Average elevation: 213 m

Average elevation: 175 m

Average elevation: 173 m

Average elevation: 177 m

Average elevation: 192 m

Average elevation: 189 m

Average elevation: 214 m