North Fork Alsea River
The North Fork Alsea River Watershed is located in the central Coast Range
(Coast Range Province) of
western Oregon. It is approximately 17 miles southwest of Corvallis, and
26 miles east of the Pacific
Ocean. Roughly 73% of the watershed is in Benton County; the remainder
is in Lincoln County. The
watershed is about 9 miles wide both east to west and north to south.
A major tributary of the Alsea
River, the North Fork Alsea River has a watershed of just under 41,900
acres (see Appendix 1, Map 1).
After traveling some 15 miles, the North Fork Alsea joins the South Fork
a few hundred yards west of the
town of Alsea to form the mainstem Alsea River, which flows into Alsea
Bay at Waldport.
Click on titles to navigate to specific documents. For ease of function,
the North Fork Alsea River Watershed Analysis and the maps are separate Adobe Acrobat PDF files.
North Fork Alsea River Watershed Analysis (PDF) Complete document
| Map Title |
Number |
| Location Map (PDF) |
App1, Map1 |
| Zones of Influence (PDF) |
App 1, Map 2 |
| Ownerships (PDF) |
App 1, Map 3 |
| Coho Salmon and Winter Steelhead Habitat (PDF) |
App 2, Map 1 |
| Fire History (PDF) |
App 3, Map 1 |
| Current Regneration Harvest Opportunities (PDF) |
App 4, Map1 |
| Future Regeneration Harvest Opportunities: Matrix Lands (PDF) |
App 4, Map2 |
| Current Commercial Thinning Opportunities: Matrix Lands (PDF) |
App 4, Map 3 |
| Current Density Mgt Opportunities: LSR (PDF) |
App 4, Map 5 |
| Future Density Mgt Opportunities: LSR (PDF) |
App 4, Map 6 |
| Transient Snow Level (PDF) |
App 4, Map 7 |
| Reach Classification by Response Type (PDF) |
App 4, Map 8 |
| Motorcycle Trails (PDF) |
App 4, Map 9 |
| Streams at Risk for Elevated Temperatures During Summer Low Flow (PDF) |
App 4, Map 10 |
| Large Woody Debris Recruitment Potential (PDF) |
App 4, Map 11 |
| Special Habitats Based on Soil Types and Plant Communitites (PDF) |
App 4, Map12 |
| Chinook and Coho Salmon Distribution (PDF) |
App 4, Map 13 |
| Steelhead and Cutthroat Trout Distribution (PDF) |
App 4, Map 14 |
| Productive Fish Flats Habitat (PDF) |
App 4, Map 15 |
| Landslide Potential and High Risk Roads (PDF) |
App 4, Map 16 |
| Vegetation Classes on BLM Lands (PDF) |
App 4, Map 17 |
| Known Sites of Poa laxiflora (PDF) |
App 4, Map 18 |
| Late Seral/Old Growth and Interior Forest Habitat Conditions (PDF) |
App 4, Map 19 |
| Zones of Influence (PDF) |
App 5, Map 1 |
