Indus River System Authority (IRSA): Pakistan's Water Apportionment Body

The Indus River System Authority (IRSA) is a Pakistani federal agency established on 4 April 1992 by Act of Parliament. Its mandate:

• Manage, operate, and maintain storage dams (Tarbela, Mangla) and barrages.
• Regulate inter‑provincial water sharing per the 1991 Water Apportionment Accord.
• Oversee seven linked canal command areas (Balloki‑Suleimanki, Sutlej Valley, Upper/Lower Chenab, Taunsa‑Panjnad, Lower Bari Doab, Warsak, Ghazi‑Barotha).

Composition: 7 members (2 each from Punjab & Sindh, 1 each from KP & Balochistan, plus a federal chairman). Headquarters: Islamabad with four directorates (Water, Land Acquisition, Planning, Administration).