Navi Mumbai, April 30 -- Shrinking reserves in Morbe dam put Navi Mumbai on a water alert, with the municipal corporation urging residents to conserve immediately. Civic commissioner Kailas Shinde said Morbe dam-the principal drinking water source-has a total gross storage capacity of 190.890 million cubic metres (MCM) and currently holds 82.557 MCM, or 43.24% of its capacity. "After setting aside the one-month emergency reserve, the actual usable stock stands at 51.957 MCM, equivalent to 27.22% of capacity," Shinde said. "At the present drawal rate, the available reserve is sufficient for a little over three months....