What is the importance of tide?

The importance:
i. Tide helps the navigators and fishermen plan their activities. Tidal flows are of great importance in navigation.

ii. Tidal heights are very important, especially harbours near rivers and within estuaries having shallow ‘bars’ at the entrance, which prevent ships and boats from entering into the harbour.

iii. Tides are also helpful in desilting the sediments and in removing polluted water from river estuaries.

iv. Tides are used to generate electrical power (in Canada, France, Russia, and China). A 3 MW tidal power project at Durgaduani in Sunderbans of West Bengal is under way.