Andanan River

Andanan River
Andanan River
	Wawa River mouth Andanan River (Philippines)
Native name	Ilog Andanan (Tagalog)
Location
Country	Philippines
Region	Caraga
Province	Agusan del Sur
Municipality	Sibagat, Bayugan
Physical characteristics
Source
• location	Sibagat, Agusan del Sur, Caraga Region
Mouth	Wawa River
• location	Maygatasan, Bayugan
• coordinates	8°43′16″N125°42′58″E / 8.721004°N 125.715973°E
Length	38 km (24 mi)
Basin size	12 km2 (4.6 sq mi)
Discharge
• location	Wawa River
• average	42 m3/s (1,500 cu ft/s)
Basin features
Progression	Andanan–Wawa–Agusan

Last updated November 11, 2024

The Andanan River (Tagalog : Ilog Andanan; Cebuano : Suba sa Andanan) is a stream located in Sibagat, Agusan del Sur and Bayugan, Caraga Region,^[1] Philippines. It is a tributary of the larger Wawa River.

Geography

The Andanan River is situated approximately 8.85089, 125.814 in the island of Mindanao.^[2]

The Andanan River headwaters from the Diwata Mountain Range of Sibagat, Agusan del Sur. It traverses along Barangay New Tubigon in Sibagat and the riverbank barangays of Bayugan namely: San Juan, Berseba, Santo Niño, Calaitan, Santa Irene and Noli where its mouth located in Barangay Maygatasan joins with the larger Wawa River. The Wawa River is one of the larger and longer rivers in the province of Agusan del Sur and a tributary river to the Agusan River.^[3]

Crossings

There are two permanent bridges that cross the Andanan River:

Andanan Bridge (1) – Barangay Maygatasan, Bayugan along the Pan-Philippine Highway Butuan-Davao Road
Andanan Bridge (2) – Barangay New Tubigon, Sibagat, Agusan del Sur along the Butuan-Tandag Road that serves as road boundary connecting Barangay New Tubigon of Sibagat and Barangay San Juan of Bayugan.

Watershed

The Andanan River and its surrounding areas was declared as a nature reserve called the Andanan Watershed Forest Reserve (AWFR) proclaimed by virtue of Philippine Presidential Proclamation No. 734 dated May 29, 1991, with an area of 15,097 hectares comprises with eight (8) barangays namely; Sta. Irene, Calaitan, Berseba, Sto. Niño, Mt. Carmel, Mt. Ararat, San Juan all of Bayugan and Barangay New Tubigon in Sibagat, Agusan del Sur.^[4]^[5]

The areas of the Andanan River is being proposed as Andanan Natural Park under the National Integrated Protected Areas System (NIPAS). This protected area has its own biological features of fauna and flora dipterocarp and premium species. Ecotourism sites like caves, waterfalls, lakes and unique rock formations are the mere features for tourist destination.^[4]

The area covered by the proclamation is under the administrative jurisdiction, supervision and control of the Philippines Department of Environment and Natural Resources through its Forest management Bureau in coordination with other government agencies with objective of maintaining its usefulness as a source of water for domestic, agriculture, power generation and other forestry purposes.^[5]

the Andanan River Watershed supports potable drinking water and irrigation for Bayugan, Sibagat, and other areas of Agusan del Sur.^[6]

Related Research Articles

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References

↑ "Region 13, List of Waterbodies | Water Quality Management Section" . Retrieved April 17, 2021.
↑ "GeoHack - Andanan River". geohack.toolforge.org. Retrieved April 17, 2021.
↑ "The Mighty Rivers of Agusan | Len Joson" . Retrieved April 17, 2021.
1 2 "Andanan Natural Park". mindanaopamb.buksu.edu.ph. Retrieved April 17, 2021.
1 2 "Proclamation No. 734, s. 1991 | GOVPH". Official Gazette of the Republic of the Philippines . Retrieved April 17, 2021.
↑ Fernandez - Gamalinda, Eve; Solania, Chennie (September 20, 2018). "Species composition and habitat association of anurans within water systems of Andanan Watershed, Agusan del Sur, Caraga Region, Philippines". Environmental and Experimental Biology. 16: 159–168. doi: 10.22364/eeb.16.15 .

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[1] "Region 13, List of Waterbodies | Water Quality Management Section" . Retrieved April 17, 2021.

[2] "GeoHack - Andanan River". geohack.toolforge.org. Retrieved April 17, 2021.

[3] "The Mighty Rivers of Agusan | Len Joson" . Retrieved April 17, 2021.

[:0-4] 1 2 "Andanan Natural Park". mindanaopamb.buksu.edu.ph. Retrieved April 17, 2021.

[:1-5] 1 2 "Proclamation No. 734, s. 1991 | GOVPH". Official Gazette of the Republic of the Philippines . Retrieved April 17, 2021.

[6] Fernandez - Gamalinda, Eve; Solania, Chennie (September 20, 2018). "Species composition and habitat association of anurans within water systems of Andanan Watershed, Agusan del Sur, Caraga Region, Philippines". Environmental and Experimental Biology. 16: 159–168. doi: 10.22364/eeb.16.15 .

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