[2] Its source is in the Central Panay Mountain Range, west of Calinog,[1] and the river traverses east to southeast before emptying into the Guimaras Strait.

It drains the eastern portion of Panay and courses through Passi City and the towns of Leganes, Zarraga, Dumangas, Barotac Nuevo, Pototan, Dingle, San Enrique, Dueñas, and Calinog, all in Iloilo province.

[citation needed] The Jalaur River has an annual average discharge of 40.3 cubic metres per second (1,420 cu ft/s).

When there is heavy downpour, during the months of June to September, the river overflows and floods the surrounding area.

In July 2024, President Bongbong Marcos and Franklin Drilon launched the PHP19 billion Jalaur River Multipurpose Project II in Calinog.