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2022 Map of Duncan

Name: 2022 Topographic Map of Duncan
Creator: U.S. Geological Survey
Published: 2022
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2022

About this map

The unincorporated community of Duncan sits at the heart of this Hancock County landscape, defined by the headwaters of the Iowa River. The terrain is a clear illustration of agricultural water management in the Midwest, where the natural winding course of the W Br Iowa River and the East Branch Iowa River are supplemented by the engineered precision of Drainage Ditch Number 6. This network of waterways drains the low-lying areas surrounding Eagle Lake to support the surrounding farmland.

Local history is anchored by three prominent burial grounds that serve as landmarks for genealogists: Saint John Cem, Saint Boniface Cem, and Liberty Cem. These sites, along with the grid of secondary roads like Co Rd R44 and Co Hwy B55, reflect the steady rural development of the region. The map preserves the spatial relationship between the small settlement of Duncan and its outlying cemeteries and waterways during the early 2020s.