Hydro power projects impact riverine fisheries The bleak future of fisheries is reflected in the “Vision and Perspective Plan” released by the Department of Fisheries earlier this week. The department is keeping its fingers crossed to even maintain the production of 5,393 tonnes in 2014-15 as it feels that with the commissioning of 294 hydro power projects in the recent years, the downward trend will be difficult to arrest.
It says that the expansion of the hydro power sector has resulted in the shrinking of rivers and streams and high silt levels. Rampant sand mining and indiscriminate use of pesticides have further aggravated the problem.
The fish production from the rivers and streams is falling drastically each year and the multi-pronged environmental assault is proving to be too damaging for the fisheries promotion. The state has some precious mahseer reserves. Though the power policy stipulates a minimum discharge of 15% ecological flow of rivers, the failure of the regulatory authority to check this has converted riverbeds into sandy deserts. That’s how the department perceives the threat from hydro power generation. As a further blow to the riverine fisheries, under the revised hydro-power policy, there is no requirement for micro hydel project developers to prepare environmental and social impact reports.
The vision document reflects that the coming up of hundreds of micro-hydel projects has drastically affected the streams environmental flow in Kangra, Kullu and Chamba. The picture is so grim that the project commissioned on the Sujan Nullah is virtually threatening the hatchery of the prestigious Indo-Norwegian trout project which is the lifeline of the entire trout farming programme of the state.Perceived as one of the major threats, the commissioning of 92 power projects, in the last few years has altered the river hydrology and blocked migratory routes exterminating spawning and feeding grounds of fish.Adding to the already bad situation is the array of pesticides and insecticides being used by farmers and fruit growers.