An ambitious plan to release water from the Ganga into the Delhi stretch of the Yamuna to increase flow and dilute pollution has hit a roadblock with the Uttar Pradesh government raising concerns, an official source told The Hindu.

The plan was to release about 500 cusecs of Ganga water from the Upper Ganga Canal (UGC) in western U.P. to the Yamuna.

As the UGC is not directly connected to the Yamuna, the plan was to first divert water from the UGC to the Eastern Yamuna Canal (EYC) via an existing channel, and then divert it from the EYC to the Yamuna.

“The water diverted from the UGC to the EYC has to pass through three districts of U.P. The U.P. government raised concerns that farmers would protest if the water is diverted and transported through a channel to Delhi and they are not allowed to use it for agriculture, despite it passing through their area,” the source said.

The U.P. government also flagged that significant re-engineering will be needed for the diversion, the source said.