| Tillamook River | |
| Map Size: | 300 |
| Pushpin Map: | USA Oregon |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of the Tillamook River in Oregon |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Oregon |
| Subdivision Type4: | County |
| Subdivision Name4: | Tillamook County |
| Length: | 17miles[1] |
| Source1: | Northern Oregon Coast Range |
| Source1 Location: | low coastal hills southwest of Tillamook |
| Source1 Coordinates: | 45.3639°N -123.9161°W[2] |
| Source1 Elevation: | 744feet[3] |
| Mouth: | Tillamook Bay |
| Mouth Location: | Oregon |
| Mouth Coordinates: | 45.4875°N -123.9017°W |
| Mouth Elevation: | 0feet |
| Basin Size: | 61sqmi |
The Tillamook River is a stream, about 17miles long, near the coast of northwest Oregon in the United States. It drains an oceanside valley in the foothills of the Northern Oregon Coast Range west of Portland and empties into the Pacific Ocean via Tillamook Bay.[1] It is one of five rivers - the Tillamook, the Trask, the Wilson, the Kilchis, and the Miami - that flow into the bay.[4]
Rising in southern Tillamook County about 4miles east of Cape Lookout, it flows initially east, then generally north, through a long broadening farming valley, passing west of Tillamook and entering the south end of Tillamook Bay. For its lower 1miles, it shares a channel with the Trask River.[1] [5]
Although much of the upper watershed of about 61mi2 is forested, much of the lower valley consists of drained pasture land.[1]
Named tributaries from source to mouth are Mills, Munson, Joe, Simmons, Fawcett, Killam, and Bewley creeks. Then come Sutton, Beaver, Anderson, Fagan, Esther, Tomlinson, Memaloose, and Dick creeks.[6]