The Andanan River (; ) is a stream located in

Sibagat, Agusan del Sur Sibagat, officially the Municipality of Sibagat (; ), is a municipality in the province of Agusan del Sur, Philippines. According to the 2020 census, it has a population of 33,957 people. Located at the northernmost part of the province, the t ...

and

Bayugan Bayugan, officially the City of Bayugan (; ), is a component city in the province of Agusan del Sur, Philippines. According to the 2020 census, it has a population of 109,499 people.. Gained cityhood through Republic Act No. 9405, it is the o ...

Caraga Region Caraga, officially the Caraga Administrative Region (or simply known as Caraga region) and designated as Region XIII, is an Regions of the Philippines, administrative region in the Philippines occupying the northeastern section of Mindanao. Th ...

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

. It is a

tributary A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which they ...

of the larger Wawa River.

Geography

The Andanan River is situated approximately 8.85089, 125.814 on the island of

Mindanao Mindanao ( ) is the List of islands of the Philippines, second-largest island in the Philippines, after Luzon, and List of islands by population, seventh-most populous island in the world. Located in the southern region of the archipelago, the ...

. The Andanan River

headwater The headwater of a river or stream is the geographical point of its beginning, specifically where surface runoff water begins to accumulate into a flowing channel of water. A river or stream into which one or many tributary rivers or streams flo ...

s from the Diwata Mountain Range of

. It traverses along Barangay New Tubigon in

Sibagat Sibagat, officially the Municipality of Sibagat (; ), is a municipality in the province of Agusan del Sur, Philippines. According to the 2020 census, it has a population of 33,957 people. Located at the northernmost part of the province, the t ...

and the riverbank barangays of

namely: San Juan, Berseba, Santo Niño, Calaitan, Santa Irene and Noli where its

mouth A mouth also referred to as the oral is the body orifice through which many animals ingest food and animal communication#Auditory, vocalize. The body cavity immediately behind the mouth opening, known as the oral cavity (or in Latin), is also t ...

is 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 Agusan del Sur, officially the Province of Agusan del Sur (; Butuanon: ''Probinsya hong Agusan del Sur''; ), is a province in Caraga region, Mindanao, Philippines. Its capital is the municipality of Prosperidad. It is bordered on the northwest ...

and a tributary river to the

Agusan River The Agusan River is third longest river in the Philippines, located in the north-eastern part of Mindanao island, draining majority of the Caraga region and some parts of Davao de Oro. It is the country's third largest river (after the Cagayan ...

Crossings

There are two permanent

bridges A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somet ...

that cross the Andanan River: * Andanan Bridge ''(1)'' – Barangay Maygatasan,

along the

Pan-Philippine Highway The Pan-Philippine Highway, also known as the Maharlika Highway (; ), is a network of roads, expressways, bridges, and ferry services that connect the islands of Luzon, Samar, Leyte, and Mindanao in the Philippines, serving as the country's p ...

Butuan Butuan (pronounced ), officially the City of Butuan (; Butuanon: ''Dakbayan hong Butuan''; ), is a highly urbanized city and the regional center of Caraga, Philippines. It is the '' de facto'' capital of the province of Agusan del Norte ...

- Davao Road * Andanan Bridge ''(2)'' – Barangay New Tubigon,

along the

Tandag Tandag, officially the City of Tandag (Surigaonon language#Tandaganon, Tandaganon/Surigaonon language, Surigaonon: ''Siyudad nan Tandag''; cebuano language, Cebuano: ''Dakbayan sa Tandag''; ), is a Cities of the Philippines#Legal classificatio ...

Road that serves as road boundary connecting Barangay New Tubigon of

and Barangay San Juan of

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 The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

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

and Barangay New Tubigon in

. 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. The area covered by the proclamation is under the administrative jurisdiction, supervision and control of the

Department of Environment and Natural Resources The Department of Environment and Natural Resources (DENR; ) is the Executive Departments of the Philippines, executive department of the Philippine government responsible for the conservation, management, development, and proper use of the cou ...

through its

Forest management Forest management is a branch of forestry concerned with overall administrative, legal, economic, and social aspects, as well as scientific and technical aspects, such as silviculture, forest protection, and forest regulation. This includes man ...

Bureau in coordination with other government agencies with the objective of maintaining its usefulness as a source of water for domestic, agriculture, power generation and other forestry purposes. the Andanan River Watershed supports potable drinking water and irrigation for

, and other areas of

References

Rivers of the Philippines Landforms of Agusan del Sur {{Caraga-geo-stub

Geography

Crossings

Watershed

See also

References