HYDROLOGY AND WATERSHED

Found in Mt. Hamiguitan are the watersheds of some rivers and creeks. These watersheds are Bitaugan, Mabua, Dumagooc/Timbo, Tibanban and Mati Clusted (Salingkomot and Jerico). Dumagooc/Timbo Watershed has the largest area of 2, 942.34 ha. While Tibanban Watershed has the smallest area of 490.42 ha. Bitaugan, Mabua, Dumagooc/Timbo and Tibanban River drain to the Davao Gulf. Jerico River drains to the Pujada Bay while Salingkamot River drains to the Pacific Ocean.
Three of these rivers namely: Dumagooc, Tibanban and Bitaugan are the Major Sources of irrigation waters for the agricultural lands of the municipalities of Governor Generoso and San Isidro. Minor Creeks are also seen in MHRWS, however, these are intermittent and dries up during summer. Of all the major rivers, Dumagooc River has the biggest discharge which is estimated to be at 30 cubic meters per second. And because there are no soil and forest disturbance inside, the water from the river is crystal clear as they exit MHRWS.
In addition to the various rivers and creek found inside MHRWS, two waterfalls exits, they are the twin falls in barangay La Union and the Danlogan Falls in barangay Maputi.