Rock River
Reservoir in Ogle County, Illinois · on the USGS Oregon quadrangle
42.01670, -89.33344
Maps that show Rock River
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Oregon, IL
Detailed map of terrain, trails and roads
USGS topo, 2024
Oregon, IL
Old map for history, not navigation
USGS historical 15-minute topo (1922)
Oregon, IL
Old map for history, not navigation
USGS historical 15-minute topo (1924)
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
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).