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The volume of water held by a natural stream channel is known as
  • a)
    Bank storage
  • b)
    Useful storage
  • c)
    Valley storage
  • d)
    Surcharge storage
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The volume of water held by a natural stream channel is known asa)Ban...
I) Bank Storage: When the reservoir is filled, a certain amount of water seeps into the permeable reservoir bank. This water comes out when the reservoir gets depleted. This volume of water is known as bank storage.
ii) Useful storage: The volume of water stored in the reservoir between normal and minimum pool level is called useful storage.
iii) Surcharge Storage: The volume of water stored between the maximum pool and normal pool levels is called surcharge storage.
iv) Valley Storage: Before constructing the dam, a variable amount of water stored in the stream channel is called valley storage.
After construction of the dam, storage increases, and there is a net increase in the storage is equal to the storage capacity of a reservoir minus natural valley storage.
Effective storage for flood mitigation = Useful Storage + Surcharge Storage–Valleys Storage
∴ The volume of water held by a natural stream channel is known as Valley Storage.
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The volume of water held by a natural stream channel is known asa)Bank storageb)Useful storagec)Valley storaged)Surcharge storageCorrect answer is option 'C'. Can you explain this answer?
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