Sonntag Hill
Summit in Nevada County, California · on the USGS Chicago Park quadrangle
39.18653, -120.96307
Maps that show Sonntag Hill
Get them in the map app
Chicago Park, CA
Detailed map of terrain, trails and roads
USGS topo, 2022

Chicago Park
Forest Service topo with road numbers
Forest Service FSTopo 7.5-minute quad

Colfax, CA
Old map for history, not navigation
USGS historical 15-minute topo (1950)

Tahoe National Forest Motor Vehicle Use Map (MVUM)
Forest roads and trails open to vehicles
Sheet 2 Back, Yuba River South (2026)

Truckee 30x60 Land Ownership (BLM Surface Management)
Land Ownership Maps from BLM Data · California

Over Snow Vehicle Use Map (OSVUM)
Where snowmobiles are allowed
Tahoe National Forest

Tahoe National Forest
Forest Service forest map

Nevada Surface Management Map
BLM Nevada (2023)

IFR Enroute Low Altitude Chart L-02 (U.S.)
FAA, 2026-10-29

IFR Enroute Low Altitude Chart L-03 (U.S.)
FAA, 2026-10-29

IFR Enroute Low Altitude Chart L-09 (U.S.)
FAA, 2026-10-29

IFR Enroute Low Altitude Chart L-11 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-04 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-03 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).