Ubort River (Russian: Уборть) is a river in Zhytomyr Oblast (Ukraine) and Homiel Voblast (Belarus), a right tributary to the Pripyat River, in the Dnieper river basin.
The Ubort River is fed mostly by snow melt (~70%), and peaks during the Spring run-off, usually mid March to early May, and maintains an even, albeit lower, flow during the summer months. It can freeze up as early as mid November or as late as January, and the ice breaks up as early as mid February or as late as mid April.
The Ubort River originates in the hills above and south of the village of Andreyevichi in Zhytomyr Oblast. It arises at 50°42′36″N 27°53′56″E / 50.71000°N 27.89889°E, elevation 207 m., from a series of small creeks flowing westward off of the Simony Hills, elevation 222 m, and northeastward off of the Marynivka Hills, elevation 225 m. The river flows north past Yemilchyne and Olevsk, thence across the international border into Belarus near Borovoye (Баравое). It then flows northeast and north past Lelchytsy, and Moiseyevichi, before entering the Pripyat at Pyetrykaw. The mouth of the river is at 52°06′05″N 28°27′56″E / 52.10139°N 28.46556°ECoordinates: 52°06′05″N 28°27′56″E / 52.10139°N 28.46556°E with an elevation of 120 meters.