Lake Martha
Lake in Chisago County, Minnesota · on the USGS Forest Lake quadrangle
45.37363, -92.89620
Maps that show Lake Martha
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Forest Lake, MN
USGS topo, 2022
Forest Lake, MN
USGS historical 15-minute topo (1955)
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-14 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-12 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-02 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).