The stream pattern within the drainage basin of Eds Creek on Map T-3 is reproduced at right at a smaller scale. On this small map, trace the length of all first-order streams with blue lines, the length of all second-order streams with red lines, and the length of Eds Creek (as a thirdorder stream) with a green line. If you don’t have colored pencils, number each segment as 1, 2, or 3.
The following questions are based on Map T-3, the “Deer Peak, Montana” quadrangle (scale 1:24,000; contour interval 40 feet), and Figure 39-3, a stereogram of the same area showing the drainage basin of Eds Creek (46°54'26"N, 114°31'02"W).
(a) How many first-order streams are shown?
(b) How many second-order streams are shown?
(a) 14
(b) 5
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