Mangangate River

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Mangangate River
Mouth	Western lobe of Laguna de Bay
Basin countries	Philippines
Length	10 kilometers
Mouth elevation	less than 2 meters above sea level

The Mangangate River (Tagalog: Ilog Mangangate), also referred to as the Alabang-Cupang River, is a river system in Muntinlupa City, Philippines. It is one of 21 major tributaries of Laguna de Bay.

The main stream has a total length of 10 kilometers and has two branches. The first is connected to the drainage system of Ayala Alabang Village, while the second is connected with the headwater from NBP Reservation, near Camp Sampaguita. This second branch flows through at Ayala Alabang Village and Filinvest Commercial Site, and connects with the first branch at Pasong Diablo site until it drains out into Laguna de Bay at a point between Wawa, Alabang and Purok 1, Cupang.

The river system has four adjoining creeks:

The biggest, at a length of 3,500 meters, joins the river at Pasong Diablo and serves as the Ayala Alabang Village Drainage.
Two creeks join the mainstream at the Filinvest site.
At the NBP Reservation, one creek spans 800 meters

The depth of the Mangangate currently varies from two meters to 0.25 meters