RAWALPINDI/ISLAMABAD: Heavy rain lashed the twin cities of Rawalpindi and Islamabad on Monday evening, inundating low-lying areas and causing damage in different parts of the garrison city. Leh Nullah swelled to 17.5 feet at Gawalmandi Bridge and 19.5 feet at Kattarian Bridge. However, water level receded in the night when the rain stopped. In the evening, rain and water in …