Download PDF Gertson Slough (SD) 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 Gertson Slough topo map.
Gertson Slough topo maps are provided as PDF files.
Note: The most current map is the 2021 Gertson Slough topographic map.