Measuring River Discharge

Calculating a river’s discharge, often measured in cfs (cubic feet per second), requires measuring some basic parameters of the river. The students broke up into four groups and headed off to four different rivers (Snake, Hoback, Upper Granite Creek, Lower Granite Creek, and the confluence of Upper and Lower Granite) around Hoback Junction, WY. At each location they needed to determine the cross sectional area of the river (done with measuring tapes/sticks), then the water’s velocity (done by dropping fruit into the river and timing it from point A to point B, passing through the plane of interest). As usual, the footage was filmed on GoPro cameras.

Gros Ventre Slide

Evidence of a huge mass wasting event (landslide) in the Gros Ventre Range in 1925. The slide dammed the Gros Ventre River for two years; in 1927 the dam broke and the subsequent massive flood decimated the downstream town of Kelly, WY killing 6 people. Footage filmed by GoPro Cameras flown on a remote controlled drone. 

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