1.4. Water Balance Equation

Try these first

1. 1.

   What does P represent in the Water Balance Equation?

   Hint

   Think about how rain contributes to water availability.

2. 2.

   What does Q stand for in the Water Balance Equation?

   Hint

   Consider what happens to excess water after rainfall.

3. 3.

   What is the formula for the Water Balance Equation?

   Hint

   Recall the components we discussed.

4. 4.

   True or False: ΔS represents the amount of water stored in the soil and groundwater.

   • True
   • False

   Hint

   Consider how much water is held in various forms.

5. 5.

   You have measured 250 mm of rainfall in a watershed. Evapotranspiration is recorded at 100 mm, and runoff is 90 mm. Calculate the change in storage (ΔS).

   Hint

   Follow the Water Balance Equation step by step.

6. 6.

   In a drought scenario, if the annual precipitation is only 50 mm, ET is 75 mm, and runoff is 10 mm, what does this indicate about ΔS?

   Hint

   Think about how insufficient water inputs can affect overall storage.