| East Fork Millicoma River | |
| Name Etymology: | Possibly the Coos people's name for the river[1] |
| Map Size: | 300 |
| Pushpin Map: | USA Oregon |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of the East Fork Millicoma River in Oregon |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Oregon |
| Subdivision Type4: | County |
| Subdivision Name4: | Coos |
| Length: | 24miles[2] |
| Discharge1 Min: | 1cuft/s |
| Source1: | eastern Coos County |
| Source1 Location: | near Douglas County line, Southern Oregon Coast Range |
| Source1 Coordinates: | 43.4139°N -123.7678°W |
| Source1 Elevation: | 1921feet[3] |
| Mouth: | Millicoma River |
| Mouth Location: | Allegany |
| Mouth Coordinates: | 43.4242°N -124.0303°W[4] |
| Mouth Elevation: | 20feet |
The East Fork Millicoma River is a tributary, about 24miles long, of the Millicoma River in the U.S. state of Oregon. Rising in eastern Coos County, it flows generally west to the community of Allegany, where it joins the West Fork Millicoma River to form the Millicoma. In turn, the Millicoma, which is only about 9miles long, joins the South Fork Coos River to form the Coos River. The Coos River, itself only about 5miles long, empties into the eastern end of Coos Bay, which connects to the Pacific Ocean.[2]
Forming north of Coos Ridge in the Southern Oregon Coast Range near Ivers Peak, the river flows west, receiving Beulah Creek from the right about 18miles from the mouth. About 6miles further downstream, Little Matson Creek enters from the right, and a mile or so later Fox Creek enters from the left. The river receives Glenn Creek from the right about 7miles from the mouth.[2] Glenn Creek and one of its tributaries, Silver Creek, cascade over Golden and Silver falls in the Golden and Silver Falls State Natural Area.[5] [6] The East Fork Millicoma River then passes a stream gauge managed by the Coos Watershed Association.[7]
Rodine Creek enters from the left about 2miles later. Just below the confluence with Rodine Creek, Nesika County Park is on the left, and Hodges Creek enters from the left. Less than a mile from Allegany, Marlow Creek enters from the right and then Nowlit Creek, also from the right, before the East Fork meets the West Fork to form the Millicoma. East Fork Millicoma Road runs parallel to the river for much of its course.[2] [8]
The river supports coastal cutthroat trout and a run of winter steelhead. Nesika County Park, about 2.5miles east of Allegany on East Fork Millicoma Road, offers bank access for steelhead fishing.[9]