Pampanga River

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Pampanga River
Rio Grande de Pampanga
Mt. Arayat & Pampanga River, Arayat, Pampanga (1).jpg
The river with Mount Arayat in the background
Pampanga River Watershed.png
Pampanga River drainage area
Philippines relief location map (Luzon mainland).svg
Red pog.svg
Pampanga River mouth
Philippines relief location map (square).svg
Red pog.svg
Pampanga River (Philippines)
Location
Country Philippines
Region Central Luzon
Province
City
Physical characteristics
Source 
  location Sierra Madre, Central Luzon
Mouth Manila Bay
  location
Hagonoy, Bulacan
  coordinates
14°46′11″N120°39′16″E / 14.76970°N 120.65434°E / 14.76970; 120.65434
  elevation
0 m (0 ft)
Length270 km (170 mi) Pampanga–Pantabangan River System. 246 km (153 mi) Pampanga River, source in Gabaldon.
Basin size10,434 km2 (4,029 sq mi) [1]
Basin features
Tributaries 
  leftAngat River, Peñaranda River, Madlum River
  rightDupinga River, Pantabangan River, Talavera River

The Pampanga River is the second largest river on the island of Luzon in the Philippines (next to Cagayan River) and the country's fifth longest river. [2] [3] It is in the Central Luzon region and traverses the provinces of Pampanga, Bulacan, and Nueva Ecija.

Contents

Topography

Its headwaters are at the Sierra Madre and runs a south and southwesterly course for about 261 kilometres (162 mi) until it drains into Manila Bay. [4]

The river's basin covers an area of 10,434 square kilometres (4,029 sq mi), [5] [1] including the allied basin of Guagua River. The basin is drained through the Pampanga River and via the Labangan Channel into Manila Bay.

Great Pampanga River (view from San Leonardo, Nueva Ecija bridge) Riverpampangajf.JPG
Great Pampanga River (view from San Leonardo, Nueva Ecija bridge)

Its main tributaries are Peñaranda and the Coronel-Santor rivers on the eastern side of the basin and the Chico River from the northwest side. The Angat River joins the Pampanga River at Calumpit, Bulacan via the Bagbag River. Mount Arayat stands in the middle of the basin.

Southeast of Mount Arayat and the Pampanga River is the Candaba Swamp, covering an area of some 250 square kilometres (97 sq mi) absorbing most of the flood flows from the western slopes of a portion of the Sierra Madre and the overflowing of the Pampanga River via the Cabiao Floodway. This area is submerged during the rainy season but is relatively dry during summer.

Flooding

The basin experiences, on an average, at least one flooding in a year. The dry season generally occurs from December to May and wet the rest of the year. The wettest months are from July to September. The Pampanga River Basin could handle between 100 and 130 millimetres (3.9 and 5.1 in) of 24-hour rainfall.

Extensive flooding occurred at the Pampanga River Basin in July 1962, May 1966, May 1976, October 1993, August 2003, August 2004, late September–October 2009, and August 2012.

The flooding in September 2011 associated with Pedring (Typhoon Nesat) nearly swallowed all of Pampanga and southern parts of Bulacan.

Very catastrophic and exceptionally severe flooding in the river basin that engulfed the Central Luzon provinces of Pangasinan, Pampanga, Bulacan, Nueva Ecija, and Tarlac occurred in July and August 1972. The 1972 flooding was so extensive that it flooded out 14 provinces in throughout Northern and Central Luzon, plus Metro Manila and Southern Tagalog. The Pampanga River Basin and the Agno River Basin converged over Tarlac, submerging that province.

Flooding of Pampanga River floodplain after Typhoon Quinta, 2020 (view from Santa Rosa, Nueva Ecija bridge) Flooding of Pampanga River after Typhoon Quinta (Molave), Santa Rosa, Nueva Ecija.jpg
Flooding of Pampanga River floodplain after Typhoon Quinta, 2020 (view from Santa Rosa, Nueva Ecija bridge)

Economic importance

At the higher sections of the basin, dams — especially the Pantabangan Dam in Pantabangan, Nueva Ecija — provide irrigation for farms in the province of Nueva Ecija.

At the lower sections of the basin, where the Pampanga delta lies, the Pampanga River system divides into small branches, crisscrossed with fishponds to form a network of sluggish, tidal flats and canals, which eventually find their way to Manila Bay.

With the anticipated completion of the Pampanga Delta Project (DPWH), it is expected that flood flows at the lower section of the Pampanga River will recede at a much faster rate.

Crossings

This is listed from mouth to source.

Candaba (San Agustin) Bridge-Malisik River in 2024 San Agustine Bridge Malisik River Views3.jpg
Candaba (San Agustin) Bridge-Malisik River in 2024
  1. Pampanga Delta Bridge
  2. Sulipan Bridge (N2 (Philippines).svg N2 ( MacArthur Highway ), Apalit)
  3. Candaba Viaduct (Pulilan–Apalit Bridge) (E1 (Philippines).svg E1 ( North Luzon Expressway ), Apalit)
  4. San Simon Bridge (San Simon)
  5. San Luis Bridge (San Luis)
  6. Candaba (San Agustin) Bridge (Candaba–Baliuag Road, Candaba)
  7. Candaba Bridge (Candaba–Santa Ana Road, Candaba)
  8. San Agustin Bridge (N3 (Philippines).svg N3 ( Jose Abad Santos Avenue ), Arayat, Pampanga)
  9. Sta. Isabel Cabiao Bridge (Cabiao)
  10. Jaen Bridge (San Anton–Poblacion Road, JaenSan Leonardo boundary)
  11. Santa Rosa Bridge (N58 (Philippines).svg N58 ( Santa Rosa–Tarlac Road ), Santa Rosa)
  12. Cesar Vergara Bridge (Felipe Vergara Highway, Cabanatuan)
  13. Valdefuente Bridge (AH26 (N1) sign.svg AH 26 (N1) ( Pan-Philippine Highway ), Cabanatuan)
  14. Bangkerohan Bridge (Nueva Ecija–Aurora Road, BongabonPalayan boundary)
  15. Palayan–Gabaldon–Dingalan Road (Laur–Gabaldon boundary)
  16. Dupinga Bridge (N114 (Philippines).svg N114 ( Palayan–Gabaldon–Dingalan Road ), Gabaldon, Nueva Ecija)

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References

  1. 1 2 Vicente B. Tuddao Jr. (September 21, 2011). "Water Quality Management in the Context of Basin Management: Water Quality, River Basin Management and Governance Dynamics in the Philippines" (PDF). www.wepa-db.net. Department of Environment and Natural Resources. Retrieved April 5, 2017.
  2. Kundel, Jim (June 7, 2007). "Water profile of Philippines". Encyclopedia of Earth. Retrieved September 30, 2008.
  3. "The Pampanga River Basin". Archived from the original on August 10, 2012. Retrieved October 24, 2008.
  4. Kenneth Kimutai too (July 24, 2018). "Longest Rivers In The Philippines". worldatlas.com. WorldAtlas. Retrieved September 9, 2019.
  5. "Pampanga River Basin". River Basin Control Office; Department of Environment and Natural Resources. Retrieved March 1, 2019.