Total streamflow across the Marys River was last observed at 271 cfs, and is expected to yield approximately 538 acre-ft of water today; about 46% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 588 cfs, with recent peaks last observed on 2012-01-19 when daily discharge volume was observed at 8,922 cfs.

Maximum discharge along the river is currently at the Marys River Near Philomath reporting a streamflow rate of 267 cfs. This is also the highest stage along the Marys River, with a gauge stage of 5.17 ft at this location. This river is monitored from 3 different streamgauging stations along the Marys River, the highest being situated at an altitude of 5,950 ft, the Marys River Below Orange Bridge Nr Charleston Nv.

The Marys River is a river in western Oregon that flows for approximately 41 miles from the Coast Range to the Willamette River. It was named after a Native American tribe that lived in the area. The river has historically been used for fishing by the local tribes and later for logging and transportation. It also has been a source of water for agriculture and drinking water for nearby towns. The river is dammed at two locations, the first being the Marys River Dam, which creates the Starker Reservoir, and the second being the Woods Creek Dam, which creates the Woods Creek Reservoir. These reservoirs are used for water storage, flood control, and hydroelectric power generation. The Marys River is a popular spot for recreation, including fishing, kayaking, and hiking along its banks.