The Tawa Reservoir has been constructed at the confluence of the Tawa and Denwa rivers. River Malani, Sonbhadra, and Nagdwari are the major tributaries of Tawa reservoir. Tawa River, a left bank tributary originates from Mahadeo hills in Chhindwara district, flows through Betul district and joins river Narmada in Narmadapuram district. It is the longest tributary of river Narmada (172 Km). Tawa Reservoir is situated near Itarsi town. The reservoir was built mainly for irrigation purpose. Although later on it is also being used for power generation and aquaculture. The total submergence area of Tawa reservoir is 20,050 hectares. The total catchment area of the reservoir is 598,290 hectares. Tawa reservoir comes under the administrative control of Forest department, district Narmadapuram. The reservoir is located inside the Satpura Tiger Reserve and forms the western boundary of the Satpura National Park and Bori Wildlife Sanctuary. Reservoir is important for aquatic flora and fauna especially birds and wild animals. Many rare and endangered species of plants, reptiles and insects are found here. It is an important habitat for many local and migratory birds. It is the largest protected area in the state Madhya Pradesh. The region is endowed with many unique features from ecological, archaeological, historical and forestry point of view

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.