This river winds through Puerto Rico’s volcanic mountains, and is the exclusive water source for DonQ Rum".

[15] The fern Thelypteris inabonensis found at the headwaters of Río Inabón and at the Toro Negro State Forest has been identified by the U.S.

[16] The flow of water in the river is controlled by the floodgates at Toa Vaca Lake, located in the municipality of Villalba.

[20] Due to its proximity to the eastern end of Aeropuerto Mercedita, the river has affected the operation of the airport in times of heavy rains.

Roads are listed as the river flows from its origin in the mountains of Barrio Anón, north of the city of Ponce, to the Caribbean Sea in the south (N/A = Data not available):