Loading map...

2012 Map of Seneca

Name: 2012 Topographic Map of Seneca
Creator: U.S. Geological Survey
Published: 2012
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2012

About this map

The Illinois River cuts through the heart of this landscape, framing the industrial and navigational character of Seneca. This river corridor is defined by features such as Barry Island and Grist Island, while the northern bank supports the residential and commercial layout of the town. Local genealogy and history are anchored by Mount Calvary Catholic Cem and Mount Hope Cem, situated on the western edge near Rat Run. The terrain shifts from the river bottomlands to higher ground at Holderman Hill, illustrating the varied topography of Grundy County.

Agricultural drainage patterns are evident in the numerous named creeks and runs, including the curiously named Deadly Run and Hog Run. To the southwest, the expansive La Salle Lake marks a significant modification of the natural landscape for industrial or utility purposes. The small settlement of Langham stands at a rural crossroads, connected by a network of local roads like Old Stage Rd and Kinsman Rd that trace the historical development of the region's transport infrastructure.