Blue River Reservoir is an artificial impoundment, about 6 miles long, of the Blue River in Lane County in the U.S. state of Oregon. The reservoir is about 1 mile north of Oregon Route 126 in the Willamette National Forest about 45 miles east of Eugene.
Location: Lane County, Oregon, about 42 miles (68 km) east of Springfield
Primary inflows: Blue River
Primary outflows: Blue River
Catchment area: 88 sq mi (230 km²)
Max. length: 6.4 mi (10.3 km)
Surface area: 935 acres (378 ha), 1,420 acres (570 ha) when full