Download PDF Foster Island (CA) USGS topo maps. These are full-sheet 7.5 Minute (1:24,000 scale) topographic maps. The red outline on the map below identifies the boundaries of the Foster Island topo map.
Foster Island topo maps are provided as PDF files.
Note: The most current map is the 2018 Foster Island topographic map.
Llano Seco Unit Trail - Sacramento River National Wildlife Refuge |