While Bihar is again facing one of the worse floods this monsoon, one basin in Bihar that has possibly faced the maximum floods is Gandak, as a number of reports[i] have described. The floods in Gandak basin were pretty serious, as embankments along Gandak breached at multiple locations, first on western side (Gopalganj district) starting on July 23-24 night and then on Eastern side (Purbi Champaran district). The flood lead to breaking of three year old HFL (Highest Flood Level) record at Dumariaghat, 19 year old HFL record at Lalganj and most shockingly, 34 year old HFL record at Rewaghat. Continue reading “Making sense of 2020 Gandak floods”
Central Water Commission is the only agency doing flood forecasting in India. As per CWC’s Flood Forecasting website[I] the Data Flow Map has information about 226 Flood Forecast Sites in the country comprising of 166 Level Forecast Sites and 60 Inflow Forecast Sites. It also monitors 700 Flood sites, information made available through List Based Exploration and Hydrograph View, but no flood forecasting is done for these sites.
In order to better understand the CWC’s flood monitoring and forecasting work, in this article we have given an overview of CWC’s flood forecasting and monitoring sites in East India. It includes state wise list of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in East India. Similar report has been published for North India[II] and North East India[III] and we hope to publish reports covering other regions of India too.