The Tupperware dam on the Blackstone River is 12 ft high, 100 ft wide, and sharp-edged. It creates a backwater similar to Fig. P10.124. Assume that the river is a weedy-earth rectangular channel 100 ft wide with a flow rate of 800 ft3/s. Estimate the water-depth 2 mi upstream of the dam if So = 0.001.

Transcribed Image Text:

y? Y-12 ft 2 miles