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Lock and Dam No. 21

Verified
Adams County, Illinois, 62305→|Mississippi River→

Location

GPS Coordinates

About This Ramp

Surface
Concrete
USGS2 data sourcesUpdated Mar 2026

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Lock and Dam No. 21 is a public boat ramp on Mississippi River in Adams County, Illinois (62305). GPS coordinates: 39.9004°N, 91.4319°W.