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The historical lakes of Udaipur, Rajasthan, namely Pichola - Swaroop Saagar and Fatah Saagar are more than a century old. Filling them above original design full tank level on public demand or over enthusiasm may prove to be a threat to safety. The free board above design full tank level is already less than the present design requirements and encroaching it by putting up sand bags or wooden pattaas for petty additional storage is already showing danger signs - there is clear and visible...
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Dams have a Sill Level which refers to the bottom of canal sluice(s) and represents the level up to which a dam can be emptied by flow through gravity. The storage above sill level is called live storage and that below it is called dead storage. Dam gauge starts with zero at this sill level and water levels below it are reported in minus starting from the sill level. While reporting gauges, not only general public, many news papers of repute are also quoting the "Sill Level" as "Seal...
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We have adopted the metric system long back (1957) and there was a grace period of 10 years for transition from British units to metric units. Now it is illegal to report the rainfall in inches and dam or river gauges in feet but I have noticed that many newspapers in Rajasthan are still reporting the rainfall in inches and dam or river gauges in feet. It may be so in other states also. Even they convert the official rainfall figures in millimetres to nearest inches. The dam gauges are also in...
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