Highlighting the grim situation in Cauvery basin, External Affairs Minister S M Krishna today appealed to Prime Minister Manmohan Singh to stop further release of water to Tamil Nadu and seek a report from the team that has been deputed to assess the water situation. Mr. Krishna, now on an official visit to the U.S., made the appeal in a letter to Dr. Singh, a copy of which was released in Bangalore today.Mr.Krishna, who hails from Cauvery basin district of Mandya, said the situation was grim in Cauvery irrigation areas and also in Bangalore following depleted water level in dams after release of water, as per the directive of the Cauvery River Authority and upheld by the Supreme Court recently.