Exercise 1: Stream Discharge and Drainage Systems 1. A stream has a width of 20

Question

Exercise 1: Stream Discharge and Drainage Systems 1. A stream has a width of 20 feet, a depth of 5 feet, and a velocity of 10 feet per second. Calculate the stream discharge 2. A stream has a width of s feet, a depth of 8 feet, and a velocity of 15 feet per second. Calculate the stream discharge Using Figure 5.4 answer the following questions. 3. Describe the sinuosity of each stream (low, intermediate, high). 4. Characterize the floodplains of each numbered stream. The floodplain is the area around the stream that has built up due to flooding depositing silt, sand, and clay on the river bank and away from the stream. This material is called alluvium (AL). (A) Which stream has the largest floodplain, (B) which stream has little to no floodplain? 5. What is the likely source of the alluvium (AL) along the Mississippi River given the surface geology of the land adjacent to its tributaries? bed bus 6. Stream order refers to the size of river and stream channels where 10 is the biggest stream and 1 is the smallest. Rank the five number streams in approximate order from biggest to smallest

Explanation / Answer

Exercise 1 -

1) Stream discharge is defined as the as the velocity of the river times its width times depth. So according to the question we have,

velocity , V= 10 ft per sec

Depth , D= 5 ft and Width, W = 20 ft.

therefore the stream discharge is = V x D x W = 10 x 5 x 20 ft3 per sec = 1000 ft3 per sec

2) Similarly in this case

velocity V= 15 ft per sec, Depth, D= 8 ft and width, W= 5 ft

therefore the strea discharge is = VxDxW= 15 x 8 x 5 ft3 per sec = 600 ft3 per sec.

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