Black Slough
Lake in Benson County, North Dakota · on the USGS Hamar quadrangle
47.85819, -98.58198
Maps that show Black Slough
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Hamar, ND
USGS topo, 2024
Hamar, ND
USGS historical 15-minute topo (1930)
Hamar, ND
USGS historical 15-minute topo (1962)
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 High Altitude Chart H-02 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).