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

Named after the Ojibwe word for "river that twists like a snake," the Namekagon River is a tributary of the St. Croix River that flows through northwest Wisconsin. The river stretches 101 miles, starting in the Chequamegon-Nicolet National Forest and ending at its confluence with the St. Croix. The Namekagon watershed is known for its pristine water quality, diverse fish and wildlife populations, and recreational opportunities. There are two major dams that affect the river's hydrology: the Hayward Dam and the Trego Dam. The Hayward Dam creates the 2,855-acre Lake Hayward, which is used for recreational activities such as fishing, boating, and swimming. The Trego Dam creates the 389-acre Trego Lake, which is also used for recreation. The Namekagon River is a popular destination for kayaking, canoeing, and fishing. Additionally, the river is critical for agricultural and forestry industries in the region.