Total streamflow across the Bark River was last observed at 169 cfs, and is expected to yield approximately 336 acre-ft of water today; about 85% of normal. Average streamflow for this time of year is 199 cfs, with recent peaks last observed on 2020-01-20 when daily discharge volume was observed at 852 cfs.

Maximum discharge along the river is currently at the Bark River Near Rome reporting a streamflow rate of 134 cfs. However, the streamgauge with the highest stage along the river is the Bark River At Nagawicka Road At Delafield with a gauge stage of 12.6 ft. This river is monitored from 2 different streamgauging stations along the Bark River, the highest being situated at an altitude of 901 ft, the Bark River At Nagawicka Road At Delafield.

The Bark River is a 70-mile-long river that runs through Wisconsin, USA. It is a tributary of the Rock River, which eventually flows into the Mississippi River. The river's name comes from the bark of trees that was used to make canoes by Native Americans. The river has a rich history and was used for transportation and logging in the past. Today, the river is used for recreation and water supply. The river has several reservoirs and dams, including the Lower and Upper Nemahbin Lakes, Lower and Upper Nashotah Lakes, and the Lulu Lake Preserve. These reservoirs and dams are used for flood control and water supply. The river is also used for fishing and boating, while nearby agricultural land is irrigated using water from the river.