| Luckiamute River | |
| Name Etymology: | Native American but of unknown meaning[1] |
| Map Size: | 300 |
| Pushpin Map: | USA Oregon |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of the Luckiamute River in Oregon |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Oregon |
| Subdivision Type4: | County |
| Subdivision Name4: | Polk and Benton |
| Length: | 61miles[2] |
| Discharge1 Location: | Helmick State Recreation Site, 13.5miles from the mouth[3] |
| Discharge1 Min: | 0.65cuft/s |
| Discharge1 Avg: | 872cuft/s[4] |
| Discharge1 Max: | 32900cuft/s |
| Source1: | Central Oregon Coast Range |
| Source1 Location: | near Bald Mountain, Polk County |
| Source1 Coordinates: | 44.7911°N -123.5458°W[5] |
| Source1 Elevation: | 2684feet[6] |
| Mouth: | Willamette River |
| Mouth Location: | near Buena Vista, Polk County |
| Mouth Coordinates: | 44.7542°N -123.1483°W |
| Mouth Elevation: | 157feet |
| Basin Size: | 315sqmi[7] |
The Luckiamute River is a tributary of the Willamette River, about 61miles long, in western Oregon in the United States.[2] It drains an area of Central Oregon Coast Range and the western Willamette Valley northwest of Corvallis.[8]
It rises in the remote mountains of southwestern Polk County, about 10miles west of Pedee. It flows southeast to Hoskins in Benton County, then northeast into Polk County, past Pedee, then east across southern Polk County. It is joined from the northwest by the Little Luckiamute River. It joins the Willamette from the west about 10miles north of Albany. The mouth of the river is about NaNmiles downstream from the mouth of the Santiam River, which enters the Willamette from the east 108miles upstream of the Willamette's mouth on the Columbia River.
Named tributaries from source to mouth are Boulder, Beaver, Miller, Wolf, Rock Pit, Slick, Cougar, Slide, and Harris creeks. Further downstream are Hull, Foster, Jones, Bonner, Vincent, Plunkett, and Price creeks. Maxfield Creek is next followed by Bump, Ritner, Pedee, McTimmonds, Link, Dry, and Jont creeks followed by the Little Luckiamute River. Soap Creek enters the main stem along the Luckiamute's lower reaches.[9]
The Luckiamute Watershed Council includes Ash Creek in its watershed study area, although it drains directly into the Willamette River.[7]