LaSalle County topographic maps

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: 627 ft

Average elevation: 663 ft

Average elevation: 669 ft

Average elevation: 748 ft

Average elevation: 696 ft

Average elevation: 479 ft

Average elevation: 719 ft

Average elevation: 699 ft

Average elevation: 623 ft

Average elevation: 699 ft

Average elevation: 594 ft

Average elevation: 591 ft

Average elevation: 591 ft

Average elevation: 591 ft

Average elevation: 597 ft

Average elevation: 525 ft

Average elevation: 620 ft