Long Lost Lake is located in Clearwater County, Minnesota, United States. The closed-basin lake's waterlevel rose from 489 m in 1991 to 491 m in 2001.

Long Lost Lake
Location of Long Lost Lake in Minnesota, USA.
Location of Long Lost Lake in Minnesota, USA.
Long Lost Lake
Location of Long Lost Lake in Minnesota, USA.
Location of Long Lost Lake in Minnesota, USA.
Long Lost Lake
LocationLong Lost Lake Township, Clearwater County, Minnesota
Coordinates47°11′42″N 95°25′07″W / 47.19500°N 95.41861°W / 47.19500; -95.41861
Typeclosed-basin lake
Primary inflowsgroundwater
Primary outflowsnone
Basin countriesUnited States
Surface area2 km2 (490 acres)
Residence time1.8 years
Surface elevation489–493 m (1,604–1,617 ft)
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  • "Hydrologic Conditions and Lake-Level Fluctuations at Long Lost Lake, 1939–2004" (PDF). (1.95 MiB)
  • "Lake Assessment Program 1993: Lost Lake" (PDF). Archived from the original (PDF) on 2006-02-11. (1.39 MiB)
  • http://longlostlake.com
  • Waterlevels (1992-2006)
  • U.S. Geological Survey Geographic Names Information System: Long Lost Lake