35.4. Typical Values of Specific Yield for Different Materials

Try these first

1. 1.

   What is the specific yield of gravel?

   Hint

   Think of the highest yield range listed.

2. 2.

   True or False: Clay has a higher specific yield than coarse sand.

   Hint

   Recall the specific yield values presented.

3. 3.

   What is the specific yield range for coarse sand?

   • 15% to 20%
   • 20% to 30%
   • 10% to 25%

   Hint

   Think about the properties of coarse sand.

4. 4.

   True or False: The specific yield of clay is higher than that of gravel.

   • True
   • False

   Hint

   Recall the specific yield values discussed in class.

5. 5.

   If an aquifer contains mostly fine sand, which has a specific yield of 10-20%, how would this affect strategies for water extraction compared to an aquifer with primarily gravel (15-30%)?

   Hint

   Compare the extraction potential based on the specific yield values.

6. 6.

   How might the specific yield of limestone with karst features (5-20%) impact water management in rural areas compared to non-karst limestone?

   Hint

   Think about the implications of porous structures in aquifer management.