Mariquina Reserve
| Upper Marikina River Basin Protected Landscape | |
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IUCN category V (protected landscape/seascape)
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The Upper Marikina River Basin in Rodriguez
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 Location in the Philippines
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| Location | Rizal, Philippines |
| Nearest city | Antipolo |
| Coordinates | 14°40′16″N 121°12′50″E / 14.67111°N 121.21389°ECoordinates: 14°40′16″N 121°12′50″E / 14.67111°N 121.21389°E |
| Area | 26,125.64 hectares (64,557.9 acres) |
| Established | July 26, 1904 (Watershed reservation) November 24, 2011 (Protected landscape) |
| Governing body | Department of Environment and Natural Resources |
The Upper Marikina River Basin Protected Landscape is a protected area in the Province of Rizal in the Philippines, which forms the upper area of the drainage basin of the Marikina River.
The term "Marikina Watershed" is sometimes used to specifically refer to this protected area, but is also generally to the river's entire drainage basin, from the Sierra Madre Mountains of Rizal Province all the way to the Napindan area in Pasig, where its mouth empties into the Pasig River.
The Upper Marikina River Basin Protected Landscape had been named the Marikina Watershed Reservation until November, 2011, when President Benigno S. Aquino III upgraded its status from "reservation" to "protected landscape."
The area officially referred to as the Upper Marikina River Basin Protected Landscape covers 26,125.64 hectares, covering the upper reaches of the Marikina watershed in the Province of Rizal, flowing through the Antipolo, Baras, Rodriguez, San Mateo, and Tanay.
In Rodriguez, the river is dammed by Wawa Dam, a structure built during the early 1900s to provide water for Manila.
From the official protected landscape area, the Marikina River then flows through its namesake city, Marikina. Near the boundary of Marikina and Pasig cities, the river meets the gates of the Manggahan Floodway, a controlled waterway used to prevent flooding in Manila during heavy rains by diverting most of the water of the Marikina towards Laguna de bay instead of Pasig River. 6.75 kilometers (4.19 mi) further downstream through Pasig City, the Marikina River's mouth finally empties into the Pasig River.
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Wikipedia