It is approximately 26 kilometers long and is considered one of the cleanest rivers in the country.

The river starts at Barangay Calubcub II in San Juan, [1] and then drains to the Verde Island Passage.

[2] Its drainage area is approximately 0.0576 square kilometres (0.02223948 sq mi) and passes into Tulay na Busog, a famous tourist spot in Lobo.

The river is an important source of water for irrigation and fishing for the people of Lobo and has many tributaries.

[3] A bridge over the river connects the coastal barangays of Olo-olo, Lagadlarin, Sawang, Soloc, Malabrigo, Balibago, and Biga with the rest of the municipality.