UN Watercourses Convention, 1997

The 1997 UN Watercourses Convention provides a framework for cooperation over international watercourses used for purposes other than navigation. A watercourse includes connected surface waters and groundwater forming a unitary system whose parts are situated in different states.

Equitable use and prevention of harm

• Articles 5-6 require equitable and reasonable utilization, assessed through relevant factors such as hydrology, dependent populations, social and economic needs, existing uses, effects on other states, conservation and alternatives.
• Watercourse states have both a right to use the watercourse and a duty to participate equitably in its protection and development.
• Article 7 requires states to take all appropriate measures to prevent significant harm to other watercourse states; if harm nevertheless occurs, they must consult on mitigation and possible compensation.
• Under Article 10, no use has inherent priority unless an agreement or custom provides otherwise, but conflicts must be resolved with special regard to vital human needs.

Cooperation, information and prior notification

• Article 8 establishes cooperation based on sovereign equality, territorial integrity, mutual benefit and good faith, including possible joint mechanisms.
• Article 9 requires regular exchange of readily available hydrological, meteorological, ecological and water-quality information.
• Articles 11-19 require information-sharing, consultation and timely notification when planned measures may have significant adverse effects on another watercourse state.

Environmental protection and dispute settlement

• Articles 20-23 require protection of watercourse ecosystems, control of pollution, prevention of harmful alien species and protection of the marine environment.
• Article 28 requires immediate notification and cooperation during emergencies originating within a state.
• Article 33 favours peaceful settlement through negotiation and other agreed means, and provides for impartial fact-finding where a dispute remains unresolved.