Located in the Shiwalik foothills of Punjab is the highly eco-sensitive Nangal Wildlife Sanctuary, which supports abundant flora and fauna including threatened species, such as the endangered Indian pangolin (Manis crassicaudata) and Egyptian vulture (Neophron percnopterus) and the vulnerable leopard (Panthera pardus). It occupies a human-made reservoir constructed as part of the Bhakra-Nangal Project in 1961. The site is of historic importance as the Indian and Chinese Prime Ministers formalized the 'Five Principles of Peaceful Coexistence' there in 1954. More than half a million people downstream benefit from the reservoir as the flow of water is regulated, reducing the risks to both people and property from floods.

A wetland should be considered internationally important if it contains a representative, rare, or unique example of a natural or near-natural wetland type found within the appropriate biogeographic region.

A wetland should be considered internationally important if it supports vulnerable, endangered, or critically endangered species or threatened ecological communities.

A wetland should be considered internationally important if it supports populations of plant and/or animal species important for maintaining the biological diversity of a particular biogeographic region.

A wetland should be considered internationally important if it supports plant and/or animal species at a critical stage in their life cycles, or provides refuge during adverse conditions.

A wetland should be considered internationally important if it regularly supports 20,000 or more waterbirds.

A wetland should be considered internationally important if it regularly supports 1% of the individuals in a population of one species or subspecies of waterbird.

A wetland should be considered internationally important if it supports a significant proportion of indigenous fish subspecies, species or families, life-history stages, species interactions and/or populations that are representative of wetland benefits and/or values and thereby contributes to global biological diversity.

A wetland should be considered internationally important if it is an important source of food for fishes, spawning ground, nursery and/or migration path on which fish stocks, either within the wetland or elsewhere, depend.

A wetland should be considered internationally important if it regularly supports 1% of the individuals in a population of one species or subspecies of wetland-dependent nonavian animal species.