Location and Early History
Formation of Lake by Glaciers
The Problem with Devils Lake
Figure 1-Map of the Devils Lake area, North Dakota. (USGS, 2008).
Figure 2-Location map of Devils Lake, North Dakota; and the glacial landforms of the surrounding region. (permission to use; Aber, 1997).
Figure 3-Sequence of formation of Devils Lake, North Dakota. (a) Glacier advances towards Cannonball River Valley; (b) Weight of glacier adds pressure to underlying aquifer; (c) Forced upward movement of water and sediments as glaciers advances into and above the pressurized area; and (d) Glacier advance ceases, glacier retreats leaving Sullys Hill and unfilled depression: later known as Devils Lake (USGS2, 2008; from Bluemle: personal communitcation, 1991)
Figure 4-Eastern margin of Devils Lake during a flooded period (copyrighted image, permission to use; Aber, 2004).