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SOME IMPORTANT TERMS
1. Normal Pool Level.
- This is the maximum level of water in the reservoir to which the water will rise during ordinary operating conditions.
- This level corresponds either to the crest level of the spillway or top level of the spillway gates.
- This level is also know maximum conservation level.
2. Minimum Pool Level.
- The lowest elevation of water which has to be maintained in the reservoir under normal operating conditions is called minimum pool level.
- The elevation is guided either by the lowest outlet in the dam or by minimum head required for efficient functioning of turbines.
3. Maximum Pool Level.
- During floods water starts flowing over the spillways.
- But discharge over spill-ways increases with further rise in reservoir level.
- The maximum level attained by water during worst design flood is know the maximum pool level.
- This level of water is essentially above the Normal pool level.