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The Morong River (Tagalog: Ilog ng Morong), also referred to as the Morong-Teresa River, is a river system in Rizal, Philippines. It is one of 21 major tributaries of Laguna de Bay. It covers 14 barangays and stretches 10 kilometres (6.2 mi) from Antipolo down to Teresa, Rizal, Morong, Rizal and finally to Laguna de Bay.

Morong River Morong-Teresa River
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Native name	Ilog ng Morong (Tagalog)
Location
Country	Philippines
Region	Calabarzon
Province	Rizal
City/municipality	Antipolo Teresa Morong
Physical characteristics
Source	Antipolo, Rizal
Mouth	Laguna de Bay
• location	Northern tip of the middle lobe of Laguna de Bay
• elevation	< 2 m (6.6 ft) above sea level
Length	10 km (6.2 mi)
Basin size	70.21 km2 (27.11 sq mi)

The Morong River sub-basin has a drainage area of 70.21 square kilometres (27.11 sq mi).[1]

On 1991, a study noted that eutrophication in Laguna de Bay could be attributed to nutrients brought to the lake as a result of the tremendous deterioration of the Morong River and the San Pedro River. In the case of the Morong River, this increase was said to be a result of draining effluents from hog farms.[2]

A 1994 cleanup drive initiated by the Laguna Lake Development Authority in cooperation with the local communities and local government units of Antipolo, Morong, and Teresa removed some seven truckloads of garbage and cleared a three-kilometre (1.9 mi) portion of the river from water lilies blocking the waterway.[3]

References

See also

• Laguna de Bay
• Laguna Lake Development Authority

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