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2022 Map of Green Island

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

USGS Topo · Published 2022

About this map

The Maquoketa River converges with the Mississippi River in a complex landscape of backwater sloughs and islands along the Iowa and Illinois border. This recent survey illustrates the intricate hydraulic network that defines the region, from the wide expanse of Flat Lake and Goose Lake to the meandering paths of Snag Slough and Brickhouse Slough. The topography is sharply divided between the river bottoms and the deeply etched bluffs to the west and north, where numerous named ravines like Sugar Camp Hollow and Schlect Hollow drain toward the floodplain.

Small settlements and rural hubs anchor the higher ground, including Green Island and Whitton. For those interested in local genealogy and land use, the map identifies specific burial sites such as Lost Mound Cem and Reeceville Cem. The presence of Island Number 254 and Island Number 256 highlights the shifting nature of the river channel, while landmarks like Lost Mound provide fixed points in an ever-changing riparian environment.