Most anglers look at the Sandy River as a spring Chinook or winter steelhead river — and they're not wrong. But every August, a significant fall Chinook run quietly pushes through the lower Sandy, offering bank anglers some of the best salmon fishing within an hour of Portland before the crowds figure out what's happening.

Timing the Early Run

Fall Chinook begin staging in the Columbia River near the Sandy's mouth as early as mid-July. By late July and into August, the first fish — often large, ocean-bright adults in the 15–35 pound class — push up into the lower Sandy between Troutdale and Dodge Park. Water temperature is the key variable. When the Sandy drops below 65°F after mid-summer rain events or overnight cooling, fish move. Watch the USGS gauge at Marmot Road; when flows tick up even slightly after a weather system, fish move with it.

Peak bank fishing on the lower Sandy typically runs August 10th through September 15th. By late September, pressure increases dramatically as word spreads and the main bulk of the run arrives. The anglers who show up in mid-August hit chrome fish with far less competition.

Best Bank Access Points

The Sandy River offers good public bank access at several key locations:

  • Lewis and Clark State Recreation Site (Troutdale): The confluence area where the Sandy enters the Columbia is a staging zone. Fish rest here before pushing upstream. Good for sliding back-bounced eggs or tossing spinners.
  • Revenue Bridge (Sandy, OR): One of the most productive bank spots on the river. Deep pools on river-right hold fish. Plunking with a sand shrimp and egg cluster rig is the local go-to.
  • Oxbow Regional Park: A fee site but worth it — multiple miles of bank access in beautiful canyon setting. Fish the tailouts and deeper slots. Early morning weekdays in August can be nearly empty.
  • Dodge Park: The classic Sandy access point. Parking fills on weekends but weekday morning sessions in August can be productive with minimal competition.

Gear and Rigging for Sandy River Chinook

The Sandy runs clear-green in summer, so go lighter than you might on a glacial system. A medium-heavy rod in the 9–10 foot range rated for 15–30 lb test paired with a baitcasting or level-wind reel spooled with 20 lb monofilament or 30 lb braid with a mono leader is the workhorse setup.

For terminal tackle, the Sandy Chinook respond well to:

  • Plunking rigs: 4–6 oz pyramid or river sinker on a dropper, 24–36 inch leader to a 4/0–5/0 Gamakatsu Octopus hook, baited with fresh or cured roe and a sand shrimp. Let it sit. Change bait every 20–30 minutes in warm water.
  • Back-bouncing eggs: In deeper pools with slower current, back-bouncing a cured egg cluster off the bottom covers water and produces fish. Use just enough weight to maintain bottom contact — usually 1–2 oz.
  • Spinners: In the faster, shallower runs, a Blue Fox Vibrax in size 5 or 6 (chartreuse/silver or orange/silver) retrieved at salmon pace is deadly on aggressive biters.
  • Kwikfish or Flatfish lures: Wrap your lure in cured sand shrimp, anchor above a deep hole, and let it work the current in a stationary presentation.

Cured Roe: The Sandy Secret

Local guides on the Sandy swear by borax-and-Fire Cure combinations for their roe. Here is a simple cure that holds up in the Sandy's cool, clear water:

  • Skein-cut eggs, skin side down
  • Apply Pro-Cure Bloody Tuna or BorX O Fire in red/orange
  • Let cure 30 minutes, flip, and cure another 30 minutes
  • Eggs should be firm, slightly tacky, and a rich orange-red
  • Store in the refrigerator; use within three days for maximum scent

Fresh sand shrimp from a Clackamas area bait shop added to the hook along with eggs is the double-trigger presentation that catches fish when bites are slow.

Regulations Check

Before you go, verify the current ODFW regulations for the Sandy River. The Sandy is subject to selective fishery rules in some sections and seasons. As of recent seasons, hatchery Chinook (clipped adipose fin) are retainable; wild fish must be released. This can change, so always confirm before heading out.

Final Thoughts

The Sandy River fall Chinook run is one of those fisheries hiding in plain sight — close to a major metro area, producing solid fish numbers, and largely ignored until September. Show up in August with fresh bait, a solid plunking rig, and some patience, and you will have a genuine shot at a chrome, ocean-bright Chinook without fighting for a parking spot.