32.1.1. Surface Runoff

Try these first

1. 1.

   Define surface runoff.

   Hint

   Think about what happens to rainwater when it doesn't soak into the ground.

2. 2.

   What is the primary factor that causes surface runoff?

   Hint

   Consider what happens during a heavy rain.

3. 3.

   What triggers surface runoff?

   • High soil absorption
   • Heavy rainfall
   • Low vegetation cover

   Hint

   Consider what happens when it rains heavily.

4. 4.

   True or False: Vegetation reduces surface runoff.

   • True
   • False

   Hint

   Think about how plants absorb rainwater.

5. 5.

   You are tasked with designing a drainage system for a new urban development area. Describe how you would assess surface runoff, including factors you would consider.

   Hint

   Think about how different elements like rainfall, vegetation, and soil type interact in an urban setting.

6. 6.

   Evaluate the impact of changing land use from forest to urban on the surface runoff in a watershed.

   Hint

   Consider how the presence of trees versus concrete affects water flow.