Onion Valley Spring Two
Spring in Placer County, California · on the USGS Blue Canyon quadrangle
39.25693, -120.65285
Maps that show Onion Valley Spring Two
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Blue Canyon, CA — USGS 7.5-minute topo (2022)
USGS Topo Maps (public domain) · California
Public domain
Emigrant Gap, CA — USGS historical 15-minute topo (1955)
USGS Historical Topo Maps (public domain) · California
Public domain
Tahoe National Forest Motor Vehicle Use Map (MVUM) — Sheet 3 Front, American River (2026)
Forest Service Maps (public domain) · Tahoe National Forest
Public domain
Tahoe National Forest Motor Vehicle Use Map (MVUM) — Sheet 2 Back, Yuba River South (2026)
Forest Service Maps (public domain) · Tahoe National Forest
Public domain
Over Snow Vehicle Use Map (OSVUM) — Tahoe National Forest
Forest Service Maps (public domain) · Tahoe National Forest
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-03 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-09 (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-04 (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
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Name, class, county and location: USGS Geographic Names Information System (public domain).