The administration has issued flood warning due to heavy rain in twin cities, Islamabad and Rawalpindi on Monday morning.The water level has been increased in Nala Lai and an alert was issued early this morning.According to met office, rain was recorded as 67mm in Rawalpindi, 83mm in Goltra, 38 in Barakaho, 35mm in Chaklala.According to flood control room, the water level at Kattariyan was 1,705 feet which was decreasing while the water level was constantly increasing at Gawalmandi point in Nala Lai.Moreover, the upper parts of the country including areas of Punjab and Khyber-Pakhtunkhwa received heavy rains that turned weather pleasant.