Hartley Island
Island in Glenn County, California · on the USGS Llano Seco quadrangle
39.52155, -121.98803
Maps that show Hartley Island
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Oxbow Unit — Sacramento River Wildlife Area — California CDFW
California CDFW Wildlife Area Maps · California
Public domain
Llano Seco Unit — Upper Butte Basin Wildlife Area — California CDFW
California CDFW Wildlife Area Maps · California
Public domain
Llano Seco, CA — USGS 7.5-minute topo (2022)
USGS Topo Maps (public domain) · California
Public domain
Chico, CA — USGS historical 15-minute topo (1949)
USGS Historical Topo Maps (public domain) · California
Public domain
Upper Butte Basin Wildlife Area — California CDFW
California CDFW Wildlife Area Maps · California
Public domain
Sacramento River Wildlife Area — California CDFW
California CDFW Wildlife Area Maps · 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-03 (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
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).