Valley Data Collection

• Channel Width
• Channel Depth
• Sediment Size / Smoothness
• Velocity of Channel
• Field Sketches
• What is an advantage of measuring width, depth and velocity?

  Cheap and easy to measure
• What is a disadvantage of measuring width, depth and velocity?

  Can be unreliable as corks can get stuck on rocks. It's better to use a flow meter
• What is an advantage of measuring sediment size?

  Quick and Easy
• What is a disadvantage of measuring sediment size?

  Subjective / bias when selecting rocks
• What is an advantage of measuring sediment smoothness?

  Can easily compare at different sites
• What is a disadvantage of measuring sediment smoothness?

  Small samples