NYS ESRT Stream Velocity

A stream flowing at 0.3 cm/s can erode what type of sediment?

• Pebbles, sand, silt, and clay
• Sand, silt, and clay
• Silt and clay
• Clay Only

What is the largest sediment size that a stream flowing at 10 cm/s can carry?

• 1.0 cm
• 0.2 cm
• 0.1 cm
• 0.01 cm

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

Which sediment requires the least amount of velocity to be eroded?

• Cobbles
• Pebbles
• Silt
• Clay

What type of sediment has a diameter of 0.003 cm?

• Sand
• Silt
• Clay
• Pebbles

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 variables does this stream graph not account for? (Hint: Read the fine print!)

• Density and Shape
• Mass and Size
• Gravity and Slope
• Discharge and Volume

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