North Yamhill River

North Yamhill River
North Yamhill River near Flying M Airport
Name origin: Uncertain but probably after a local Kalapuya tribe
Country	United States
State	Oregon
County	Yamhill
Source	Northern Oregon Coast Range
- location	Siuslaw National Forest, in western Yamhill County, Oregon
- elevation	2,467 ft (752 m)
- coordinates	45°23′51″N 123°25′23″W / 45.39750°N 123.42306°W / 45.39750; -123.42306
Mouth	Yamhill River
- location	between McMinnville and Dayton, Yamhill County, Oregon
- elevation	75 ft (23 m)
- coordinates	45°13′33″N 123°08′42″W / 45.22583°N 123.14500°W / 45.22583; -123.14500Coordinates: 45°13′33″N 123°08′42″W / 45.22583°N 123.14500°W / 45.22583; -123.14500
Length	31 mi (50 km)
Basin	177 sq mi (458 km2)
Location of the mouth of North Yamhill River in Oregon

The North Yamhill River is a 31-mile (50 km) tributary of the Yamhill River in the U.S. state of Oregon. It drains an area of the Northern Oregon Coast Range, as well as part of the Willamette Valley west of the Willamette River.

Rising in a remote area in the mountains of northwestern Yamhill County, the river flows generally east, then southeast, then south past the city of Yamhill. It joins the South Yamhill River about 2 miles (3.2 km) east of McMinnville to form the Yamhill River.

The river begins at an elevation of 2,467 feet (752 m) above sea level and falls 2,392 feet (729 m) between source and mouth to an elevation of 75 feet (23 m). It rises northeast of Trask Mountain, a 3,412-foot (1,040 m) peak at 45°22′17″N 123°27′23″W / 45.37139°N 123.45639°W / 45.37139; -123.45639 (Trask Mountain), in the Northern Oregon Coast Range. The source, at about river mile (RM) 31 or river kilometer (RK) 50, lies near the border between Tillamook County and Yamhill County northwest of the city of Yamhill.

Flowing south and then southeast for its first 1 mile (1.6 km), the river receives Perkins Creek from the . Heading east, it receives Maroney Creek from the right before reaching the Flying M Ranch and Flying M Airport at about RM 26 (RK 42), where it receives Hanna Creek from the and Petch Creek from the right. Continuing east, the stream receives Fairchild Creek from the left, Haskins Creek from the right, and Cedar Creek from the left before reaching Pike at RM 20 (RK 32). Shortly thereafter, the river turns southeast, and Turner Creek enters from the left.