Small Hydro Development in Nayar river valley in Lesser ... - ESHA

DIVERSION WEIR
To be designed to pass the probable maximum flood
through gates.
With narrow diversion sites the cost of constructing a
weir with gates becomes higher due to excavation
cost for widening the river section to provide enough
section to pass the flood.
For Santoodhar – II
- Cost of ungated overflow weir Rs. 34.33 Million
- Cost of gated weir Rs. 52.45 Million
Hence, overflow type ungated weir
with under sluice adopted.
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