Judson Reservoir (historical)
Reservoir in San Diego County, California · on the USGS Imperial Beach quadrangle
32.61394, -117.05281
Maps that show Judson Reservoir (historical)
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Imperial Beach, CA,BCN, US — USGS 7.5-minute topo (2021)
USGS Topo Maps (public domain)
Public domain
San Diego, CA — USGS historical 15-minute topo (1904)
USGS Historical Topo Maps (public domain) · California
Public domain
San Diego, CA — USGS historical 15-minute topo (1930)
USGS Historical Topo Maps (public domain) · California
Public domain
IFR Enroute Low Altitude Chart L-04 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-04 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
Name, class, county and location: USGS Geographic Names Information System (public domain).