Grand Meadow National Nature Park (Ukrainian: Великий Луг, Velykyi Luh) covers historic steppe terrain in southeast Ukraine.

Because most of the terrace, historically known as the Great Meadow, was inundated by the creation of the reservoir, the park's territory is mostly ridges and coastal strips along the shore.

One of the ecologically protected areas of the park is the Sim Maiakiv Floodplain, a Ramsar wetland site that houses high levels of biodiversity in the steppe-forest and reed beds of the mouth of one of the reservoir's tributaries.

[7] The warm, flat, shallow portion of the terrace that is submerged provides an extensive habitat for feeding fish.

The unique karst sinkholes of the area support large colonies, and many species of, bats[7] The park was designed to include dedicated sectors for protection of nature, recreation, cultural and historical tourism and study, and buffer zones.