Big Spring
Spring in Trinity County, California · on the USGS Covington Mill quadrangle
40.96542, -122.75419
Maps that show Big Spring
Get them in the map app
Covington Mill, CA — USGS 7.5-minute topo (2021)
USGS Topo Maps (public domain) · California
Public domain
Trinity Lake, CA — USGS historical 15-minute topo (1950)
USGS Historical Topo Maps (public domain) · California
Public domain
IFR Enroute Low Altitude Chart L-02 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-11 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-03 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).