The river with highest tidal bore in India is

The Hooghly River (a distributary of the Ganga) is renowned for having the highest and most significant tidal bore in India. A tidal bore occurs when the incoming flood tide creates a wave that travels upstream against the river current, typically in areas with a large tidal range exceeding 6 metres [1]. The funnel-shaped estuary of the Hooghly, combined with its shallow depth and sandbars, facilitates this phenomenon [1]. While other peninsular rivers like the Mahanadi, Krishna, and Cauvery form large deltas and are influenced by tidal processes, they do not exhibit tidal bores of the same magnitude or frequency as the Hooghly [2][t1]. These bores can be dangerous for navigation and shipping in the estuarine zone due to their unpredictable nature and force [3]. Consequently, the Hooghly remains the primary example of a tidal bore river in the Indian subcontinent.

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 32: Ocean Movements Ocean Currents And Tides > Tidal Bore > p. 509
2. [2] INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 3: Drainage System > River Systems of the Peninsular Drainage > p. 24
3. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 32: Ocean Movements Ocean Currents And Tides > Impact of Tidal Bore > p. 510