Question:
Correct order, in decreasing trend, of reservoirs based on their capacity at full reservoir level (Mm\(^3\))
Correct order, in decreasing trend, of reservoirs based on their capacity at full reservoir level (Mm\(^3\))
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Nagarjunasagar is one of the largest reservoirs in India (over 11 BCM).
This helps place it first.
Idukki is a double-curvature arch dam located in a narrow gorge, which limits its storage volume compared to massive earthen/gravity dams, placing it last.
This helps place it first.
Idukki is a double-curvature arch dam located in a narrow gorge, which limits its storage volume compared to massive earthen/gravity dams, placing it last.
Updated On: Jul 6, 2026
- Ukai $>$ Nagarjunasagar $>$ Sriramsagar $>$ Koyna $>$ Idukkii
- Nagarjunasagar $>$ Ukai $>$ Sriramsagar $>$ Idukki $>$ Koyna
- Nagarjunasagar $>$ Sriramsagar $>$ Ukai $>$ Koyna $>$ Idukki
- Nagarjunasagar $>$ Ukai $>$ Sriramsagar $>$ Koyna $>$ Idukki
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Reservoir storage capacities are expressed in Million Cubic Meters (Mm\(^3\)) or Billion Cubic Meters (BCM).
Comparing the full reservoir capacities of major river valley projects is a common question in water resource management.
Step 3: Detailed Explanation:
Let us review the total storage capacities at Full Reservoir Level (FRL) for each dam:
1. Nagarjunasagar (Andhra Pradesh/Telangana): \(\approx 11,560 \text{ Mm}^3\)
2. Ukai (Gujarat): \(\approx 8,511 \text{ Mm}^3\)
3. Sriramsagar (Telangana): \(\approx 3,170 \text{ Mm}^3\) (equivalent to ~112 TMC)
4. Koyna (Maharashtra): \(\approx 2,797 \text{ Mm}^3\) (equivalent to ~98 TMC active)
5. Idukki (Kerala): \(\approx 1,996 \text{ Mm}^3\)
Arranging these capacities in decreasing order: \[ 11,560 > 8,511 > 3,170 > 2,797 > 1,996 \] \[ \text{Nagarjunasagar} > \text{Ukai} > \text{Sriramsagar} > \text{Koyna} > \text{Idukki} \]
Step 4: Final Answer:
The correct decreasing order is option (D).
Reservoir storage capacities are expressed in Million Cubic Meters (Mm\(^3\)) or Billion Cubic Meters (BCM).
Comparing the full reservoir capacities of major river valley projects is a common question in water resource management.
Step 3: Detailed Explanation:
Let us review the total storage capacities at Full Reservoir Level (FRL) for each dam:
1. Nagarjunasagar (Andhra Pradesh/Telangana): \(\approx 11,560 \text{ Mm}^3\)
2. Ukai (Gujarat): \(\approx 8,511 \text{ Mm}^3\)
3. Sriramsagar (Telangana): \(\approx 3,170 \text{ Mm}^3\) (equivalent to ~112 TMC)
4. Koyna (Maharashtra): \(\approx 2,797 \text{ Mm}^3\) (equivalent to ~98 TMC active)
5. Idukki (Kerala): \(\approx 1,996 \text{ Mm}^3\)
Arranging these capacities in decreasing order: \[ 11,560 > 8,511 > 3,170 > 2,797 > 1,996 \] \[ \text{Nagarjunasagar} > \text{Ukai} > \text{Sriramsagar} > \text{Koyna} > \text{Idukki} \]
Step 4: Final Answer:
The correct decreasing order is option (D).
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