| Birch Creek | |
| Map Size: | 300 |
| Pushpin Map: | USA Oregon |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of Birch Creek in Oregon |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Oregon |
| Subdivision Type4: | County |
| Subdivision Name4: | Umatilla |
| Length: | 16miles[1] |
| Source1: | confluence of east and west forks |
| Source1 Location: | near Pilot Rock |
| Source1 Coordinates: | 45.485°N -118.8344°W[2] |
| Source1 Elevation: | 1622feet[3] |
| Mouth: | Umatilla River |
| Mouth Location: | near Rieth |
| Mouth Coordinates: | 45.6553°N -118.8817°W |
| Mouth Elevation: | 958feet |
| Basin Size: | 291sqmi[4] |
Birch Creek is a 16miles tributary of the Umatilla River in eastern Oregon in the United States.[1] It rises at the confluence of East and West Birch creeks south of Pilot Rock, Oregon, at the base of the Blue Mountains and flows north, slightly west of the city of Pendleton.[5] It enters the Umatilla River about 49miles from the larger stream's confluence with the Columbia River.[6]
Birch Creek is one of the rivers that drain Oregon's northwestern corner of the Blue Mountains, flowing alongside industrial waste ponds, and over two minor impoundments before reaching the Umatilla River. Lands in the Birch Creek drainage are used for logging, grazing, dairy farming, and factory farming. Birch Creek is a source of phosphates and the resulting eutrophication of the Umatilla River.[7]
Pendleton photographer Walter S. Bowman is believed to have been born by Birch Creek.