Compare the present length of the meandering Souris River course shown on the map with the length of a river flowing down this valley if it were not meandering. (You can measure the distance with a piece of string, or your instructor can show you a more precise method.)
The following questions are based on Map T-4, a portion of the “Voltaire, North Dakota” quadrangle (scale 1:24,000; contour interval 5 feet) and Figure 40-4, a stereogram of the same region showing the Souris River (48°06'23"N, 100°48'05"W).
(a) Length of present meandering course: __________ miles
(b) Length of a straight course down the valley: __________ miles
(a) about 13.5
(b) about 4.5
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