The Sagudin River itself has 23 tributary creeks coming from the city's populated barangays, which include Santo Niño (also known as the Slaughterhouse Compound), New Lucban, Guisad, Honeymoon, Cabinet Hill, and Pacdal.

At upstream Bineng are several mini-hydroelectric power plants operated by Hydroelectric Development Corporation (HEDCOR).

[4] As it exits Sablan and enters Bagulin in La Union province, it is named the Naguilian River.

[1] The river suffers from excessive pollution, usually blamed upon the densely populated city of Baguio,[5] where its headwaters are formed.

[5][10] The Baguio Sewerage Treatment Plant was constructed in 1986 along Sanitary Camp to filter the river before it enters La Trinidad.