Lower Elkhorn

Watershed Hydrology

The Lower Elkhorn Watershed (HUC 10220003) covers approximately 1,121 square miles in northeastern Nebraska. The area is characterized by rolling hills and farmland. The main hydrological feature of the watershed is the Elkhorn River, which flows through the center of the watershed. The river is fed by a combination of snowmelt and precipitation. The watershed experiences cold winters with average snowfall of 28 inches. The snowpack contributes to spring runoff, which can cause flooding in the area. The primary reservoir in the watershed is the Elkhorn Reservoir, which provides flood control and recreation opportunities. The reservoir is subject to nutrient loading, particularly from agricultural runoff. The area is also subject to severe weather events, including tornadoes and thunderstorms. In recent years, the watershed has experienced an increase in extreme precipitation events, which has led to increased flooding risks.


Surface Flows

Lower Elkhorn Watershed

Snowpack Depths

Lower Elkhorn Watershed

Dams & Reservoirs

Lower Elkhorn Watershed

Groundwater Levels

Lower Elkhorn Watershed

Lower Elkhorn Rivers

Rivers of the Watershed