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

The Humptulips River is a 45-mile-long river located in the Olympic Peninsula of Washington state. It was named by Native Americans for its winding course, which resembles the shape of a twisted snout. The river has historically been important to the Quinault Indian Nation and was also used for logging and transportation during the early 20th century. The river is fed by several tributaries and has a hydrology that supports healthy salmon runs. The Humptulips River is also home to the Wynoochee Dam and Reservoir, which was built in the 1970s for hydroelectric power generation and flood control. The reservoir is a popular destination for recreational activities like fishing, boating, camping, and hiking. The surrounding area is also used for agriculture, including dairy farming and cranberry production.