Unit 18 Alsea
Marys Peak to the Pacific — a classic mid-coast Roosevelt elk and blacktail unit stitched from timber-company checkerboard.
West Oregon — Central Coast Range · Last reviewed 2026-07-12
Area
1,963
sq mi
Public land
42%
approx.
Elevation
0–4,097
feet
Motorized
moderate
access
Overview
The Alsea (Unit 18) is a big Central Coast Range unit running from the Willamette Valley edge at Corvallis and Philomath southwest across the Coast Range crest all the way to the Pacific at Siletz and Siuslaw bays. It is anchored by Marys Peak (4,097 ft, the highest point in the Oregon Coast Range) and drained by the Alsea, Siletz, and Yaquina river systems. This is fundamentally Columbian blacktail and Roosevelt elk country — Alsea is one of the better-known coastal Roosevelt units — backed by black bear and cougar in the thick rainforest cover. At roughly 42% public land, most of it Siuslaw National Forest and BLM O&C parcels laced through a dense private-industrial-timber checkerboard, access is real but has to be mapped carefully.
Terrain
Steep, wet, densely forested Coast Range topography of short sharp ridges and tight river canyons, rising from sea level on the west edge and valley farmland on the east up to the Marys Peak massif. Slopes are relentlessly brushy and timbered — this is close-cover still-hunting country, not open glassing terrain, apart from the clearcuts and Marys Peak's grassy bald summit.
Cover: Coastal Douglas-fir, western hemlock, and western redcedar rainforest with heavy salmonberry, sword fern, salal, and blackberry understory. Industrial timberland means a shifting mosaic of clearcuts and replanted stands in every age class; fresh cuts and reprod units explode with forbs, fireweed, and grass that pull deer, elk, and bear to feed. Marys Peak crowns out in a noble-fir stand and a grassy summit meadow.
Landmarks: Marys Peak (4,097 ft — highest point in the Coast Range) · Alsea River / Alsea Bay · Siletz River and Siletz Bay · Yaquina River · Triangle Lake (south boundary area) · Coast Range crest · Table Mountain / Prairie Peak area · Corvallis / Philomath valley edge (east boundary)
Access
About 42% of the unit is public, dominated by Siuslaw National Forest around the Marys Peak/crest core and BLM O&C sections scattered through the private-timber checkerboard. The rest is private industrial timberland and valley farmland. Much of the industrial timber has historically allowed walk-in foot access but is increasingly gated, permit-only, or fee-based and can close seasonally for fire or logging — verify each company's current rules before you hunt. ODFW manages mid-coast travel management areas here with designated open-road maps; get the current motor-vehicle-use and ownership maps to sort open ground from closed. A dense logging-road grid means you can drive close to most non-summit public ground.
Managers: USFS - Siuslaw National Forest, BLM - Northwest Oregon / Salem District (O&C lands), Private industrial timber (Weyerhaeuser, Starker Forests, Hancock/Manulife and others), Oregon Dept. of Forestry lands, Private valley farmland (east edge)
Access points: Hwy 34 / Alsea River corridor (main east-west route Corvallis-Philomath to the coast) · Marys Peak Road off Hwy 34 (FS access to the crest) · Hwy 20 (north edge, Corvallis-Newport) · Hwy 180 / Eddyville and Siletz-side roads · Alsea-Deadwood and Five Rivers road systems · Triangle Lake / Hwy 36 (south)
Species notes
Roosevelt Elk
common qualityAlsea is one of the signature Roosevelt elk units on the mid-coast, with resident herds using the timber/clearcut mosaic across both public and private ground. Bull quality is solid for a coastal general/controlled unit, and the reprod-and-old-growth interface holds animals year-round. Access to the best private timber is the main limiter on where you can chase them.
- →Glass fresh clearcuts and reprod units at first and last light — elk feed in the openings and slip back to bedding timber by mid-morning
- →Work benches, saddles, and north-facing draws that link feeding cuts to security cover; elk pattern between the two
- →During archery rut, hunt timbered slopes near creeks, seeps, and wallows and call from the cover edges — bulls answer but hang up in the brush
- →Cut fresh logging roads for tracks after rain and still-hunt into the wind through the nastiest reprod when pressure builds
- →Map private-timber access first — the herds cross ownership lines constantly and the best odds often sit behind a gate
Blacktail Deer
common opportunityColumbian blacktail are widespread across the whole unit but live in heavy cover, so densities feel moderate and sightings are low. Mature bucks exist — the private-timber edges and valley-farmland fringe on the east produce the heavier headgear — but success here is about hunting the cover, not glassing open slopes.
- →Hunt clearcut and timber-harvest edges at dawn and dusk — blackberry, forbs, and brush regrowth are blacktail magnets
- →Still-hunt slowly into the wind through Douglas-fir/hemlock benches and creek bottoms midday; bucks bed in the thick stuff and won't move far
- →Key the east-side farmland-timber edge and BLM parcels for bigger-bodied bucks
- →Late season, post the snowline when it drops onto Marys Peak and the crest — deer slide downhill with it
- →Use skid roads and old grades to move quietly and cut tracks in soft ground after rain
Black Bear
common opportunityBlack bear are common throughout the coastal rainforest. The same regenerating clearcuts, berry fields, and creek bottoms that feed deer and elk concentrate bears, and the mild coast holds good numbers.
- →Glass green clearcuts, reprod units, and roadside grass flushes at dawn and dusk in spring as bears feed on new growth
- →In fall, key berry patches, skunk-cabbage bottoms, and any oak/mast pockets
- →Cover ground on the logging-road grid, glassing open cuts across drainages
- →Move slowly through creek-bottom brush where bears feed and travel
Cougar
common opportunityCougars are present wherever the deer and elk are — the dense coastal timber holds a healthy lion population. Most are taken incidentally by deer and elk hunters rather than by dedicated calling or hounds.
- →Carry a tag while deer/elk hunting and watch muddy roads and cutbanks for fresh tracks
- →Use a predator call near fresh kills or in steep timbered canyon country
- →Hunt the same cover edges and rim breaks that hold deer — cougars follow the prey
- →After rain or snow, cut roads and ridgelines to locate and follow tracks
Pro tips
- →Treat fresh clearcuts and reprod units as your feed map — they out-produce old-growth for both elk and blacktail
- →Sort the ownership checkerboard before opening day; industrial-timber access rules and gate closures vary by company and season
- →For elk, hunt the feeding-cut-to-bedding-timber transition rather than the middle of either
- →Slow down — this is a still-hunting unit; hunters who ease through the cover kill the deer that hunters covering miles never see
- →Time a wet, windy day for still-hunting; rain-quiet ground and moving animals are your best window
Watch out for
- !About 58% of the unit is private industrial timber and farmland — access is increasingly gated, permit, or fee and can close for fire or active logging; confirm before you go
- !Mid-coast travel management area road closures apply — carry the current designated-route map
- !Steep, brush-choked, slick rainforest terrain is physically demanding and easy to get turned around in; carry navigation
- !Blacktails are dense-cover ghosts — expect low sighting rates and hunt accordingly
- !Fire-season closures and industrial-forest fire restrictions can shut down access with little notice in early season
Logistics
Corvallis and Philomath are the main service, fuel, and lodging hubs on the east edge, with Newport, Waldport, and Toledo covering the coast side and Alsea as a small mid-unit stop. Hwy 34 is the primary east-west artery down the Alsea River, with Hwy 20 framing the north. Lodging runs from valley-town and coastal motels to dispersed and developed camping in the Siuslaw National Forest. Cell coverage drops fast off the highway corridors. A high-clearance rig plus current ownership and motor-vehicle-use maps (or onX) are essential to work the private-timber checkerboard.
Nearest towns: Corvallis, Philomath, Alsea, Waldport, Newport, Toledo, Monroe
Seasons & regulations
This page carries no season dates or regulations. Get current rules from the official Oregon sources:
Research sources: ODFW - Alsea Unit 18 (official unit page: boundary, 42% public, Siuslaw NF/BLM) · USFS - Siuslaw National Forest · ODFW - Big Game Hunting Seasons & Regulations
FAQ
- How big is Unit 18 in Oregon?
- Unit 18 (Alsea) covers about 1,963 square miles, ranging from roughly 0 to 4,097 feet in elevation. Area is computed from the unit boundary polygon.
- How much public land is in Unit 18?
- Approximately 42% of the unit is public land. Primary managers: USFS - Siuslaw National Forest, BLM - Northwest Oregon / Salem District (O&C lands), Private industrial timber (Weyerhaeuser, Starker Forests, Hancock/Manulife and others), Oregon Dept. of Forestry lands, Private valley farmland (east edge). Always verify ownership boundaries on the ground.
- What species does the catalog list for Unit 18?
- Roosevelt Elk, Blacktail Deer, Black Bear, Cougar. For seasons, tags, and regulations, use the official Oregon agency resources linked on this page — this page carries no regulatory information.
Put Unit 18 on your map.
Boundary lines, public/private ownership, topo, and offline maps for this unit — in Baseline Maps, free for 14 days.