| North Fork Clackamas River | |
| Name Etymology: | Clackamas tribe |
| Map Size: | 300 |
| Pushpin Map: | USA Oregon |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of the North Fork Clackamas River in Oregon |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Oregon |
| Subdivision Type4: | County |
| Subdivision Name4: | Clackamas |
| Length: | 11miles[1] |
| Source1 Location: | Cascade Range, Clackamas County, Oregon |
| Source1 Coordinates: | 45.2272°N -122.0456°W[2] |
| Source1 Elevation: | 3963feet[3] |
| Mouth: | Clackamas River |
| Mouth Location: | North Fork Reservoir, Clackamas County, Oregon |
| Mouth Coordinates: | 45.2322°N -122.2544°W |
| Mouth Elevation: | 666feet |
| Basin Size: | 47sqmi[4] |
The North Fork Clackamas River is a tributary, about 11miles long, of the Clackamas River in the U.S. state of Oregon. Originating at nearly 4000feet above sea level on the west side of the Cascade Range, it flows westward through Mount Hood National Forest. It joins the Clackamas at North Fork Reservoir, about 32miles from the larger river's confluence with the Willamette River. From source to mouth, the following tributaries enter the river: Dry Creek from the right bank, Boyer Creek from the left bank, then Whiskey, Bedford, Bee, and Fall creeks, all from the right.[1] [5]
Elevations in the watershed range from 4770feet in the headwaters on Tumala Mountain to 660feet at the river mouth. Prominent landforms include Ladee Flats, a flat-topped ridge composed of lava flows resistant to erosion. The North Fork valley is narrow and steep, and a 50feet waterfall 2.5miles from the mouth limits passage of migratory fish. Native rainbow and cutthroat trout are found in the upper river and its tributaries, while the lower river has winter and summer steelhead, coho salmon, spring chinook, and stocked rainbow trout.[6]