Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Greenwater River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Greenwater River, the highest being situated at an altitude of ft, the .
The Greenwater River is a river in the U.S. state of Washington. Its watershed drains a portion of the Cascade Range east and northeast of Mount Rainier, including parts of the Norse Peak Wilderness. It flows into the White River at Greenwater, which eventually flows into Puget Sound via the Puyallup River. The Greenwater River defines part of the boundary between King and Pierce counties.