La Mesa Watershed and Eco-Park
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The La Mesa Watershed Reservation is a protected area that preserves the only major watershed in
Metro Manila Metropolitan Manila (often shortened as Metro Manila; fil, Kalakhang Maynila), officially the National Capital Region (NCR; fil, link=no, Pambansang Punong Rehiyon), is the seat of government and one of three defined metropolitan areas in ...
,
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
. Also known as the Novaliches Watershed, it contains the last remaining rainforest of its size in Metro Manila surrounding the La Mesa Dam and Reservoir, the primary source of potable drinking water for 12 million residents in the Manila metropolitan area. The area is under the joint administration, supervision and control of the
Department of Environment and Natural Resources The Department of Environment and Natural Resources ( fil, Kagawaran ng Kapaligiran at Likas na Yaman, DENR or KKLY) is the executive department of the Philippine government responsible for governing and supervising the exploration, developmen ...
and the
Metropolitan Waterworks and Sewerage System Metropolitan may refer to: * Metropolitan area, a region consisting of a densely populated urban core and its less-populated surrounding territories * Metropolitan borough, a form of local government district in England * Metropolitan county, a typ ...
. It was established in 2007 through Proclamation No. 1336 issued by President
Gloria Arroyo Maria Gloria Macaraeg Macapagal Arroyo (, born April 5, 1947), often referred to by her initials GMA, is a Filipino academic and politician serving as one of the House Deputy Speakers since 2022, and previously from 2016 to 2017. She previously ...
.


Geography

The La Mesa Watershed encompasses an area of in the northern fringes of
Quezon City Quezon City (, ; fil, Lungsod Quezon ), also known as the City of Quezon and Q.C. (read in Filipino as Kyusi), is the most populous city in the Philippines. According to the 2020 census, it has a population of 2,960,048 people. It was fou ...
,
Caloocan Caloocan, officially the City of Caloocan ( fil, Lungsod ng Caloocan; ), is a 1st class highly urbanized city in Metropolitan Manila, Philippines. According to the 2020 census, it has a population of 1,661,584 people making it the fourth-most ...
and Rodriguez, Rizal. It is situated on a flat-topped hill or
mesa A mesa is an isolated, flat-topped elevation, ridge or hill, which is bounded from all sides by steep escarpments and stands distinctly above a surrounding plain. Mesas characteristically consist of flat-lying soft sedimentary rocks capped by a ...
at the foot of the southern
Sierra Madre Sierra Madre (Spanish, 'mother mountain range') may refer to: Places and mountains Mexico *Sierra Madre Occidental, a mountain range in northwestern Mexico and southern Arizona *Sierra Madre Oriental, a mountain range in northeastern Mexico *S ...
mountain range west of the Marikina Valley. It is about north from the center of Quezon City in Diliman, and some northeast from the center of
Manila Manila ( , ; fil, Maynila, ), officially the City of Manila ( fil, Lungsod ng Maynila, ), is the capital of the Philippines, and its second-most populous city. It is highly urbanized and, as of 2019, was the world's most densely populate ...
in
Rizal Park Rizal Park ( fil, Liwasang Rizal, es, link=no, Parque Rizal), also known as Luneta Park or simply Luneta, is a historic urban park located in Ermita, Manila. It is considered one of the largest urban parks in the Philippines, covering an are ...
. The highest elevation in Quezon City is in the watershed's northern tip at above sea level. It centers on the La Mesa Dam and Reservoir in Novaliches, an artificial lake which was created in 1929 as part of Manila's Ipo–Novaliches– San Juan water system under the American colonial government. The surrounding forest contains more than of nature trails and serves as the lungs of Metro Manila, providing it with clean air. It also contains the ecological park known as the La Mesa Eco Park. This park located at the southern edges of the watershed in East Fairview is administered by the Quezon City Parks Development and Administration Department and was opened in 2003. The Tullahan River which passes through
Malabon Malabon, officially the City of Malabon ( fil, Lungsod ng Malabon), is a 1st class highly urbanized city in the National Capital Region of the Philippines. According to the 2020 census, it has a population of 380,522 people. Located just nort ...
and
Navotas Navotas, officially the City of Navotas ( fil, Lungsod ng Navotas), is a 1st class highly urbanized city in the National Capital Region of the Philippines. According to the 2020 census, it has a population of 247,543 people. It is known as the ...
starts from the La Mesa Watershed Reservation. It flows until the
Manila Bay Manila Bay ( fil, Look ng Maynila) is a natural harbor that serves the Port of Manila (on Luzon), in the Philippines. Strategically located around the capital city of the Philippines, Manila Bay facilitated commerce and trade between the Phi ...
.


Tourism

In 2015, it was reported that 300 thousand people visit the La Mesa Watershed Reservation annually according to park officials. The protected area also has of nature trails.


Biodiversity

The La Mesa Watershed comprises a variety of ecosystems that is home to many indigenous and endemic species of flora and fauna. Approximately are under forest cover and are open areas, pastures and areas under cultivation. Several portions of the La Mesa reservoir are shallow with exposed mudflats, swampforest, reed and other swamp vegetation. Its forest serves as an important breeding area for a variety of wildlife species and birds such as the little heron, black-crowned night heron,
osprey The osprey (''Pandion haliaetus''), , also called sea hawk, river hawk, and fish hawk, is a diurnal, fish-eating bird of prey with a cosmopolitan range. It is a large raptor reaching more than in length and across the wings. It is brown o ...
, Japanese sparrowhawk, plain bush-hen,
common moorhen The common moorhen (''Gallinula chloropus''), also known as the waterhen or swamp chicken, is a bird species in the rail (bird), rail family (Rallidae). It is distributed across many parts of the Old World. The common moorhen lives around well-v ...
,
Eurasian coot The Eurasian coot (''Fulica atra''), also known as the common coot, or Australian coot, is a member of the rail and crake bird family, the Rallidae. It is found in Europe, Asia, Australia, New Zealand and parts of North Africa. It has a slaty-bla ...
, Philippine coucal,
Philippine nightjar The Philippine nightjar (''Caprimulgus manillensis'') is a species of nightjar in the family Caprimulgidae. It is endemic to the Philippines. Its local names are ''kandarapa'' (Tagalog language, Tagalog) and ''tagolilong'' (Cebuano language, Cebu ...
, island swiftlet, spotted wood kingfisher,
common kingfisher The common kingfisher (''Alcedo atthis''), also known as the Eurasian kingfisher and river kingfisher, is a small kingfisher with seven subspecies recognized within its wide distribution across Eurasia and North Africa. It is resident in much of ...
, white-collared kingfisher, Philippine pygmy woodpecker,
barn swallow The barn swallow (''Hirundo rustica'') is the most widespread species of swallow in the world. In fact, it appears to have the largest natural distribution of any of the world's passerines, ranging over 251 million square kilometres globally. ...
,
pied triller The pied triller (''Lalage nigra'') is a species of bird in the family Campephagidae. It is found in Brunei, India, Indonesia, Malaysia, the Philippines, Singapore, and Thailand Thailand ( ), historically known as Siam () and officia ...
,
ashy minivet The ashy minivet (''Pericrocotus divaricatus'') is a passerine bird of eastern Asia belonging to the minivet genus ''Pericrocotus'' in the cuckooshrike family Campephagidae. While most of the minivets have shades of yellow, orange and red in thei ...
,
Philippine bulbul The Philippine bulbul (''Hypsipetes philippinus'') is a songbird species in the bulbul family, Pycnonotidae. It is endemic to the Philippines. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical mo ...
, black-naped oriole,
Oriental magpie robin The Oriental magpie-robin (''Copsychus saularis'') is a small passerine bird that was formerly classed as a member of the thrush family Turdidae, but now considered an Old World flycatcher. They are distinctive black and white birds with a long ...
, Arctic warbler, grey-streaked flycatcher, pied fantail, yellow-bellied whistler,
grey wagtail The grey wagtail (''Motacilla cinerea'') is a member of the wagtail family, Motacillidae, measuring around 18–19 cm overall length. The species looks somewhat similar to the yellow wagtail but has the yellow on its underside restricted to ...
,
brown shrike The brown shrike (''Lanius cristatus'') is a bird in the shrike family that is found mainly in Asia. It is closely related to the red-backed shrike (''L. collurio'') and isabelline shrike (''L. isabellinus''). The genus name, ''Lanius'', is deri ...
, olive-backed sunbird, and lowland white-eye. The most common tree species found in the reservation are Malay beechwood, earleaf acacia,
acacia mangium ''Acacia mangium'' is a species of flowering tree in the pea family, Fabaceae, that is native to northeastern Queensland in Australia, the Western Province of Papua New Guinea, Papua, and the eastern Maluku Islands. Common names include black ...
, narra, mahogany,
teak Teak (''Tectona grandis'') is a tropical hardwood tree species in the family Lamiaceae. It is a large, deciduous tree that occurs in mixed hardwood forests. ''Tectona grandis'' has small, fragrant white flowers arranged in dense clusters ( pan ...
, ipil-ipil, alibangbang and bangkal.


Threats

Threats to the watershed's biodiversity come from
land conversion Land development is the alteration of landscape in any number of ways such as: * Changing landforms from a natural or semi-natural state for a purpose such as agriculture or housing * Subdividing real estate into lots, typically for the purpose ...
and
deforestation Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated ...
from illegal harvesting of forest products. In 2014, the La Mesa park ranger recorded a total of 25 informal settler families living within the reservation who engage in
slash-and-burn Slash-and-burn agriculture is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed veget ...
cultivation or ''kaingin''. A portion of the watershed was also reportedly sold as housing for employees of the Metropolitan Waterworks and Sewerage System which was flagged by the Commission on Audit. Former Environment Secretary Gina Lopez cancelled the environmental compliance certificate for the sale in December 2016. The Manila Seedling Bank conducted a five-year reforestation program at the watershed from 1978 to 1983. In a 2013 vulnerability assessment by scientist Cristino Tiburan, the La Mesa Watershed Reservation was found to be prone to erosion and landslide.


See also

* Angat Watershed Forest Reserve


References

{{Parks and plazas in Manila Birdwatching sites in the Philippines Geography of Metro Manila Geography of Rizal Tourist attractions in Metro Manila Protected areas of the Sierra Madre (Philippines) Protected areas established in 2007 2007 establishments in the Philippines