Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Calawah River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Calawah River, the highest being situated at an altitude of ft, the .

The Calawah River is a 23-mile-long river located in the Olympic Peninsula in the U.S. state of Washington. It flows from the Olympic Mountains and drains into the Pacific Ocean at La Push. The river has a rich history of salmon fishing by the Quileute tribe and European settlers. The hydrology of the river is influenced by seasonal rainfall and snowmelt. There are no major reservoirs or dams on the river. The river supports recreational activities such as fishing, kayaking, and hiking. The Calawah River is also used for agricultural purposes, with several farms located along its banks. The river is an important part of the ecosystem and plays a key role in supporting the biodiversity of the region.