Dams

Rivers that crossed Highest Flood Level in Monsoon 2021

(Feature image River Betwa in flood spate on Aug. 4, 2021. Source: Sharad Chandra, Director, CWC)

While India has received 874.6 mm rainfall which falls in normal[i] category in just concluded south west monsoon season, there have been at least 27 incidents of rivers crossing the Highest Flood Levels (HFLs) ever recorded in the past and attaining new HFLs in 5 river basins (some composite basins) in India, as recorded by the Central Water Commission (CWC) Flood Forecasting site[ii] during the monsoon.

The maximum 12 such instances have taken place in Ganga basin followed by 6 in west flowing rivers Tapi to Tadri basin, 5 in Godavari, 2 in West Flowing rivers Tadri to Kanyakumari basin and 1 each in Subernarekha and Tapi basin.

For past three years, SANDRP has been tracking the HFL breach incidents during monsoon season. The analysis of such HFL breaches in 2018[iii], 2019[iv] and 2020[v] can be seen on our website.

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Dams

East India Rivers Review 2017

The seventh report reviewing status of India’s rivers in 2017, focuses on Rivers in West Bengal, Odisha, Bihar, Jharkhand and Chhattisgarh. This review does not include main Ganga river as there is separate Review of state of Ganga River.

West Bengal Rivers

Rivers pollution worse than in 2014 According to the latest State of Environment Report, it has been found that in the 17 major rivers of the state, including the Ganga, the levels of coliform bacteria are much higher than the permissible limit. The report further revealed that several stretches of the Ganga had a total coliform count ranging from one to four lakhs, making the water totally unfit for even bathing. The report has also stated that compared to 2014, all the four main rivers of north Bengal recorded a significant increase in total coliform count. http://www.thehindu.com/todays-paper/tp-national/bengals-rivers-in-a-bad-shape/article22459562.ece (The Hindu, 18 Jan. 2018)

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Odisha Rivers Profile

About Odisha

Odisha is located on the eastern coast of India, between 17o31‟ and 22o 31‟ N latitude and 81o 31‟ and 87 o 31‟ E longitude. It covers 155,707 km2 , which represents about 4.74% of the area of India. The climate of state is tropical with 1450mm average rainfall.

The 2011 Census established the State‟s population at 41.9 million, 16% of which lived in urban centres. The average population density is 270 persons per km2, compared to 382 for India.  Odisha is a land of possibilities. The State is endowed with bountiful of resources, people, land, water, forest, minerals and other minor resources. The State is divided into 30 districts, of which Mayurbhanj is the largest (1042km2) and Jagatsinghpur the smallest (197km2). The districts are subdivided into 314 CD Blocks. There are 58 sub-divisions and 171 tahasils. According to 2001 census there are 51,349 villages and 6234 Gram Panchayats.(ORISSA STATE WATER PLAN, 2004). 

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