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Specific yield for an unconfined aquifer is ________________

Specific yield for an unconfined aquifer is ________________ Correct Answer less than porosity

The specific yield is expressed as the ratio of the volume of the water obtained by gravity drainage to the total volume of the material drained. Since, Specific yield + Specific retention = Porosity. Evidently, the specific yield is less than the porosity.

Related Questions

For an unconfined aquifer, the specific yield is 20%, specific retention is 15%, and permeability is 35 m/day. Consider the following statements: 1. The porosity of the aquifer is 35%. 2. The transmissibility is 35 m2/day. 3. The volume of water lost from storage per metre drop in the water table per 100 km2 area of the aquifer is 20 million m3. Which of the above statements are correct?
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Which of the following statements are correct as regards aquifer characteristics? 1. The storage coefficient is the volume of water released from storage from the entire aquifer due to unit depression of Piezometric head. 2. The storage coefficient is the same as the specific yield for water table aquifer. 3. Both the aquifer constants, viz. storage coefficient S and Transmissivity T are dimensionless numbers. 
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