Boguko River

Boguko River (; ) is a stream located in Sibagat, Agusan del Sur, Caraga Region, Philippines. It is a tributary of the larger Wawa River with headwaters located in the mountain boundaries of Sibagat and the Province of Surigao del Sur.
Etymology.
"Boguko River" got its name from the native word "bagako" which means "mysterious". According to the oral history from early inhabitants of the place, mostly "manobo" natives, the place where the river is located had made few stories of mysterious disappearance of people and animals that's why they called the place as Bagako River which means "mysterious river". Variant forms of names and spelling of Bagako River or in other native languages such like Bagoko and its present name Boguko River.
Geography.
"Boguko River" is situated approximately 8.779840, 125.711982 in the island of Mindanao. Terrain elevation at these coordinates is estimated 719 metres above seal level.
"Boguko River" headwaters originate from the Diwata Mountain Range of Barangays Banagbanag and New Tubigon where its mouth located in Barangay Magsaysay joins with the larger Wawa River. Wawa River is the largest and longest river in the town and a tributary river to the Agusan River.
Crossings.
In early years, a logging company operating on that area constructed an access road and built a highly elevated detour bridge that crossed Boguko River and they named it "Boguko Bridge". The bridge connects the villages of Sitio San Roque of Barangay Magsaysay to Sitio Kahayag of Barangay Banagbanag. The said access road and bridge are now part of the Butuan-Kolambugan-Tandag Road.