|Length||25 km (16 mi)|
|Basin size||627.93 km2 (242.45 sq mi) |
|Waterbodies||Reservoir of Pilar Dam|
Its name means "Rented River", from the root word abang which means "rent". Due to drownings and attacks by crocodiles (which used to inhabit the river), this loss of life was considered a rent for the use of the river. 
Its sources, the Wahig and Pamacsalan Rivers, spring in the mountains of
The coastal plain is one to two miles wide where the river banks are muddy and fringed in many places by
The river's estuary is a productive habitat for invertebrates, fish, and birds, as well as spawning and nursery grounds for many species of fish, supports seagrass vegetation, shellfish beds, and nesting grounds for a variety of birds. The estuary is under threat from human development pressures such as fish pens, oyster farms, recreational use, and pollution.