Ezhat — a small river in the Nizhny Novgorod Region, 64 km long. Its mouth is at the 338th kilometre along the left bank of the The Piana River.
- Water body code in the State Water Register — 08010500412110000039531
- Code by hydrological survey (GI) — 110003953
- Basin code — 08.01.05.004
- GI volume number — 10
- GI issue — 0
Water Register data
According to the State Water Register of Russia, the river belongs to the Upper Volga basin district; its water management section is the Sura from the mouth of the Alatyr River down to the Sura's own mouth, and the river sub-basin is the Sura. The river basin is the (Upper) Volga down to the Kuybyshev Reservoir (excluding the Oka basin).