Sediments have a general downhill tendency moving towards floodplains, deltas and eventually delivered to the sea.[22] and this is shown in Butuanon River (Table 1). Siltation in Butuanon River though is aggravated by a number of human activities that increase sedimentation rate. These are run off are due to poor agricultural practices, channel straightening, overgrazing of river and stream banks, and clearing of streamside vegetation, construction and construction related activities such as dredging and quarrying