Top Discharges

Streamgauges reporting the most discharge on the Grande Ronde River

10 Day Trend

Discharge comparison for the highest gauges over the past 10 days

Expected Streamflow Ranges

Streamflow discharge range for this time of year

For other places with the same name, see Grande Ronde (disambiguation).The Grande Ronde River ( or, less commonly, ) is a tributary of the Snake River, 182 miles (293 km) long, in northeastern Oregon and southeastern Washington in the United States. It drains an area southeast of the Blue Mountains and northwest of the Wallowa Mountains, on the Columbia Plateau. It flows through the agricultural Grande Ronde Valley in its middle course and through a series of scenic canyons in its lower course. Source: Wikipedia