NYS ESRT Stream Velocity

If a stream were flowing 100 cm/s and slowed to 10 cm/s, what type of sediment would it no longer carry?

• Clay

• Silt

• Sand

• Pebbles

What types of sediments would be on the stream bed (not eroded) of a river flowing at 200 cm/s?

• Boulders only

• Boulders, Cobbles, and Pebbles

• Boulders and Cobbles

• Nothing

What is the largest type of sediment that can be carried by a river flowing at 3 cm/s?

• Silt

• Sand

• Pebbles

• Clay

What determines a river's ability to erode sediment?

• Discharge

• Velocity

• Gradient (Slope)

• All the Above

For a stream to carry a sediment the size of 20 cm, how fast must it's velocity be?

• 200 cm/s

• 100 cm/s

• 50 cm/s

• 500 cm/s

The greatest stream velocity are found closest to points

• A and B

• B and C

• C and A

• D and A

What is the largest sediment that a stream could transport that has a velocity of 110 cm/s?

• Pebbles

• Sand

• Silt

• Clay

Which particles could be transported by a stream moving at a velocity of 5 cm/s?

• Pebbles, Sand, Silt, Clay

• Sand, Silt, Clay

• Silt, Clay

• Clay

What is the approximate minimum stream velocity required to transport the smallest pebble?

• 1.1 cm/s

• 5.0 cm/s

• 11.0 cm/s

• 110.0 cm/s

If a stream has a velocity of 50 cm/s, what is the largest sediment size it can carry?

• Clay

• Silt

• Sand

• Pebbles