Big Spring
Spring in Iowa County, Wisconsin · on the USGS Clyde quadrangle
43.06083, -90.24568
Maps that show Big Spring
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Clyde, WI
Detailed map of terrain, trails and roads
USGS topo, 2022

Spring Green, WI
Old map for history, not navigation
USGS historical 15-minute topo (1960)

Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)

IFR Enroute Low Altitude Chart L-28 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-05 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).