Poltva

The Poltva (Ukrainian: Полтва; Polish: Pełtew) is a river in the western Ukrainian Oblast of Lviv and a tributary of the Bug. The Poltva valley cuts between the Podilian Plateau and Roztichia.^[1] The capital of the Lviv Oblast, Lviv, is located on the river, with the river flowing directly beneath Lviv's central street, Liberty Avenue [uk], and the Lviv Theatre of Opera and Ballet.^[2]

Poltva
The course of River Poltva within Lviv
Location
Country	Ukraine
Physical characteristics
Source
• location	Lviv, Ukraine
Mouth	Bug
• location	Busk
• coordinates	49.9603°N 24.6077°E / 49.9603; 24.6077
Length	60 km (37 mi)
Basin size	1,440 km2 (560 sq mi)
Basin features
Progression	Bug→ Narew→ Vistula→ Baltic Sea

The river once faced significant problems with pollution.^[3] As a result, the river was covered up and included into the underground sewer system of Lviv, beginning in 1839.^[4] During World War 2, Jews fleeing Nazi violence used the underground river as a hiding place.^[5]