The Haro is a river in Pakistan that flows through Khyber Pakhtunkhwa and parts of Punjab. It is a left tributary of the Indus. Its main valley is in Abbottabad District, in the Hazara Division of Khyber Pakhtunkhwa Province, northern Pakistan. The famous Khanpur Dam has been built on this river at Khanpur in the Haripur District of Hazara Division to provide drinking water to the twin cities, i.e. Islamabad and Rawalpindi. The decrease in inflows from Khanpur dam from the Haro River results in a water shortage in the twin cities during the summer season.