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

The Ellis River, located in New Hampshire, runs for approximately 25 miles through the White Mountains. The river has a rich history, having been used for logging in the 1800s and serving as a major transportation route for timber. The river's flow is largely dependent on snowmelt and rainfall, and in the past, it has experienced severe flooding. Today, the river is home to multiple dams and reservoirs, including the Silver Lake Reservoir and the Jackson Reservoir. These reservoirs serve as sources of hydroelectric power, and they also provide a valuable water source for the surrounding communities. The river is a popular destination for outdoor recreation, and activities such as swimming, fishing, and kayaking are common. Agricultural uses of the river's water include irrigation for crops and pastureland.