Río Negro (Uruguay)

The course of the Río Negro across Uruguay effectively divides the south and the north of the country.

With a surface area of about 1,100 square kilometres (420 sq mi), it is the largest reservoir in Uruguay and has an installed capacity of 160 MW.

[2] The Río Negro's drainage basin size is about 69,700 square kilometres (26,900 sq mi).

[1] There is a delta at its confluence with the Uruguay River with two main mouths.

Yaguarí creek -bordered by Vizcaino and Lobos Islands- is the navigable entry to Negro River, and may change water flow direction when the Uruguay is high while the southern mouth (Spanish: Boca Falsa) is very wide but shallow.

Map of the Rio de la Plata Basin , showing the Río Negro joining the Uruguay River north of Buenos Aires
Flooding along the river