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Specific Yield and Retention Video Lecture | Civil Engineering Optional Notes for UPSC

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FAQs on Specific Yield and Retention Video Lecture - Civil Engineering Optional Notes for UPSC

1. What is specific yield in hydrology?
Ans. Specific yield in hydrology refers to the ratio of the volume of water that drains freely from a saturated rock or soil mass due to the force of gravity to the total volume of the rock or soil mass.
2. How is specific yield different from specific retention?
Ans. Specific yield represents the amount of water that can freely drain from a saturated rock or soil mass, while specific retention refers to the amount of water that is retained within the rock or soil against the force of gravity.
3. Why is specific yield important in groundwater management?
Ans. Specific yield is important in groundwater management as it helps in determining the amount of water that can be extracted sustainably from an aquifer without depleting it beyond its natural recharge rate.
4. How can specific yield be measured in the field?
Ans. Specific yield can be measured in the field through various methods such as pump tests, slug tests, and infiltration tests, which help in determining the drainage characteristics of a particular rock or soil mass.
5. What factors can influence the specific yield of a rock or soil mass?
Ans. Factors such as porosity, permeability, compaction, and lithology of the rock or soil mass can influence its specific yield, as these properties determine the ease with which water can drain from the mass.
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