A number of welcome developments around dams appear in this week’s DRP News Bulletin from SANDRP. The prominent is the Brihanmumbai Municipal Corporation declaring that it may not need Pinjal Dam, which SANDRP had said in its report way back in 2012-13 and the then BMC commissioner had agreed to in an interview to NDTV. This should also lead to cancellation of the Damanganga Pinjal River Link proposal. The Maharashtra govt decision to review the need for Human dam is also welcome. The Kerala State Information Commissioner’s decision to direct that the Dam Break Analysis should be in public domain is also a useful precedent that all states and CWC need to follow immediately and also amend the proposed Dam Safety Act to include a provision that all Dam Safety related information, including meeting minutes, agenda, decisions, status reports etc will be in public domain.
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 South India. It includes state wise list of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in South India. Similar report has been published for North India[ii] and North East India[iii] and East India[iv].
Tamil Nadu There are 3 Level Forecasting, 48 Level Monitoring and 14 Inflow Forecasting sites in Tamil Nadu State. Out of total 65 sites, 19 Level Monitoring and 2 Inflow Forecasting sites are inactive. MWL information is given only for 1 Inflow Forecasting site out of 14. IRRUKKANKUDI, Sathanur and Gomukhi sites are repeated with incomplete information. Out of 48, HFL figure and date is not provided for 25 Level Monitoring sites.