Rawalpindi- A flood warning was issued after water level in Rawalpindi’s Nullah Lai rose up to 18 feet due to intermittent rain in twin cities. The monsoon rainfall in Islamabad and Rawalpindi inundated several low-lying areas. According to reports, the water entered several homes, located near the Nullah Lai. Water level in Nullah Lai, which passes through different localities of the twin cities, touched the maximum point due to heavy rain. At Katariyan, water level was recorded at 18 feet while it was 11 feet at Gawalmandi.