4. Well Hydraulics: Steady State Flow in Wells

Try these first

1. 1.

   What is steady-state flow?

   Hint

   Think about consistent water levels in a well.

2. 2.

   What does the cone of depression represent?

   Hint

   Visualize a cone shape around the well.

3. 3.

   What defines steady-state flow in well hydraulics?

   • Fluctuating water levels
   • Stable piezometric heads
   • Decreasing water quality

   Hint

   Focus on the terms 'steady' and 'stable'.

4. 4.

   True or False: The cone of depression is formed only in unconfined aquifers.

   • True
   • False

   Hint

   Think about the definition of both aquifers.

5. 5.

   You have a well that during a pumping test shows a declining piezometric head of 4 m at a distance of 60 m from the well. Calculate the hydraulic conductivity of the aquifer if the pumping rate was 0.03 m³/s.

   Hint

   Consider using the head difference and time factors in calculations.

6. 6.

   During an aquifer slug test, the water level rises 5 m in a well after releasing a slug of water. If recovery takes 2 hours to stabilize, estimate the hydraulic conductivity and comment on the aquifer's properties.

   Hint

   Link recovery to hydraulic conductance and aquifer sustainability.