5.1. Components

Try these first

1. 1.

   What are the three types of runoff?

   Hint

   Think about how water interacts with the land.

2. 2.

   How do we generally measure runoff volume?

   Hint

   Consider what happens to rainwater.

3. 3.

   What is the definition of runoff?

   • Water that evaporates
   • Water flowing over land to streams
   • Water absorbed by soil

   Hint

   Remember it as water moving towards streams.

4. 4.

   True or False: Base flow is the contribution of groundwater to streamflow during wet periods.

   • True
   • False

   Hint

   Think about when base flow is relevant.

5. 5.

   Given the following data: Precipitation = 150 mm, Curve Number = 75, calculate the runoff volume and explain your approach.

   Hint

   Use the SCS equation carefully.

6. 6.

   Analyze how changes in land use from forest to urban can affect the hydrograph shape and discuss the implications for flood management.

   Hint

   Consider how surfaces interact with water.