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2013 Map of Toolesboro

Name: 2013 Topographic Map of Toolesboro
Creator: U.S. Geological Survey
Published: 2013
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2013

About this map

The confluence of the Iowa River and the Mississippi River dominates this landscape, where a complex network of side channels and islands defines the border between Iowa and Illinois. The settlement of Toolesboro sits on the bluffs overlooking this river junction, providing a strategic view of the expansive Lake Odessa Public Hunting Area and the labyrinth of chutes and sloughs. This map reveals the intricate hydrologic character of the upper Mississippi, where features like Bogus Chute, Meyer Slough, and Ziegler Slough carve through the alluvial bottomlands.

Water management and conservation efforts are evident in the engineered features of the basin, including the Swan Lake Ditch, Prentis Ditch, and the Lake Odessa complex. To the east across the main channel, the Illinois shoreline is punctuated by Sturgeon Bay and Boston Bay, protected by a series of large river islands such as Turkey Island and Otter Island. These landforms illustrate the shifting nature of the river channel before modern stabilization, offering a detailed look at the riparian geography of Mercer and Louisa counties.