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

The Newaukum River is a 25-mile-long river located in western Washington, United States. It was historically a vital fishing ground for the local indigenous people. The river's headwaters are located near the town of Bucoda, and it flows southward to join the Chehalis River near the city of Centralia. The river's hydrology is influenced by the surrounding topography, with steep gradients and numerous tributaries contributing to its flow. The river is home to several reservoirs and dams, including the Centralia Lake and the Mayfield Dam, which were constructed for flood control and hydroelectric power generation. The river is also used for recreational activities such as fishing, boating, and swimming, and supports agricultural activities in its floodplain.