4.2. Equilibrium Equations

Try these first

1. 1.

   What is a confined aquifer?

   Hint

   Think about what layers can restrict water movement.

2. 2.

   Define hydraulic conductivity.

   Hint

   Consider what affects water flow in nature.

3. 3.

   What does the Theim equation primarily relate?

   • Piezometric head and hydraulic conductivity
   • Pumping rate and transmissivity
   • Water table and soil moisture

   Hint

   Look for the key variables involved in the equation.

4. 4.

   True or False: Unconfined aquifers are not influenced by surface water.

   • True
   • False

   Hint

   Think about what affects unconfined aquifers.

5. 5.

   A confined aquifer has a transmissivity of 10 m²/s and a pumping rate of 5 m³/s. If the piezometric head at a distance of 50 meters is 20 m, what would be the piezometric head at 100 meters?

   Hint

   Break down the equation's components step-by-step.

6. 6.

   Discuss how a seasonal drought might impact the hydraulic conductivity of a nearby unconfined aquifer and provide a strategy to measure this change.

   Hint

   Consider soil structure changes and measurement strategies.