Bumbungan River

The Bumbungan River (Tagalog: Ilog Bumbungan) is a river in the province of Laguna in the Philippines. It is commonly referred to as the Pagsanjan River because of the popularity of the municipality of Pagsanjan and Pagsanjan Falls, one of the province's tourist destinations. The municipality of Pagsanjan was named so because it is where the Balanac River, originating from Mount Banahaw, joins the Bumbungan. Its old name, Pinagsangahan, which literally means branching, was changed to Pagsanjan during the Spanish Colonial Era. The Bumbungan River originates from the Sierra Madre mountains, in the highlands of Cavinti, flowing through Pagsanjan and ending in Lumban where it drains to Laguna de Bay, the largest lake in the country. Bumbungan is one of 21 major tributaries of the lake and responsible for up to 35% of the water that flows into the lake. It is regularly monitored by the Laguna Lake Development Authority (LLDA) through one of its 15 river monitoring stations.

Flows through: Philippines.

River data from Wikidata (CC0); lengths normalised to a common unit.