A flood alert was today sounded in Srinagar city as River Jhelum was flowing four feet above the danger mark after incessant rain, while 23 villages have been inundated by floods in south Kashmir districts of Anantnag and Kulgam. Incessant rain over the past three days has wreaked havoc in many parts of the Valley with south Kashmir's Anantnag and Kulgam districts the worst-hit.