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Henry Hagg: Sunny Warming Weekend & Dawn Rock Smallmouth
Henry Hagg Lake (Scoggins Valley) · Fri Oct 2 – Sun Oct 4, 2026 · bank / kayak / boat · times PT
Scoggins Valley opens early October under a warming Portland-office high — pack a shell for the low-50° dawn, fish the first Dam Overlook riprap before the sun climbs, and let crawfish and leftover baitfish tell you which Eagle Point and Sain Creek rock still hold honest Hagg smallmouth.
WEEKEND OUTLOOK
NWS Portland (PQR) north-band corridor forecast (PQR 121,64), pulled early Friday morning, keeps the Scoggins Valley / Henry Hagg corridor under a quiet dry high with cool nights and warming days into the upper 70s–upper 80s. Friday opens sunny with a high near 79°F after an overnight low near 53°F, west-southwest wind 0–6 mph, and almost no rain in the forecast; Friday night settles near 51°F. Saturday climbs to near 86°F / overnight low near 54°F, sunny, light north breeze 0–3 mph. Sunday peaks near 88°F / overnight low near 56°F, sunny, southwest wind 0–5 mph. No active NWS watches or warnings for the corridor at the early-Friday pull. Nearby METARs around 4 AM PT Friday: KHIO ~30.00 and KSLE ~30.00 inHg — a settled high over metro rock water.
For smallmouth: lean the low-light riprap, points, and Dam Overlook rock hard while nights stay in the low-to-mid 50s, then expect a morning-shallow / midday-slide pattern as highs climb into the mid-80s under sunny skies. Cool dawns should keep bait and bass honest on the first stone, Eagle Point banks, and Sain Creek no-wake water before the sun climbs. Soft recreational-metro pressure is the crowd factor — no named Henry Hagg / Scoggins Valley trail event Fri–Sun.
Friday Oct 2
- Sunny
- Sunrise 7:11 AM · Sunset 6:54 PM PT
- Best bite: first light–~9:30 AM PT on Dam Overlook riprap and Eagle Point rock; midday deeper points and shaded banks
Saturday Oct 3
- Sunny
- Sunrise 7:12 AM · Sunset 6:52 PM PT
- Best bite: dawn on Sain Creek rock; midday lee points once metro park traffic builds
Sunday Oct 4
- Sunny
- Sunrise 7:13 AM · Sunset 6:50 PM PT
- Best bite: first light–mid-morning on lee riprap; midday windward rip along rock if any breeze stacks bait
Bite tie-in
Cool nights + warming sunny days = morning smallmouth on riprap, points, and the first rock transitions, then a midday slide to deeper stone and shaded banks as highs climb into the mid-80s. Keep a craw-colored tube or Ned ready — that is still Hagg’s honest early-October menu.
DAM & CURRENT / GENERATOR SCHEDULE CHEAT SHEET
Henry Hagg Lake is a Bureau of Reclamation (BOR) recreation pool behind Scoggins Dam, operated for public use by Washington County Parks (Scoggins Valley Park). There is no public hour-by-hour hydropower unit board for anglers. Live pool-elevation IV for the reservoir itself was thin at the early-Friday pull — treat the sheet below as honest failover plus metro-pressure context, with Scoggins Creek below the dam as the live outflow cue.
| Source | Live pull (Fri Oct 2 early PT) | What it means this weekend |
|---|---|---|
| Pool elevation BOR Scoggins / Hagg Hydromet · USGS lake elev |
Thin at pull — no fresh instantaneous pool elev IV posted on scraped USGS/BOR endpoints | Confirm Washington County Parks notices and BOR RISE / Hydromet Scoggins before you trailer if last week’s ramp felt skinny. Late-season recreation pools here typically still fish rock and points; confirm rather than guess. |
| Scoggins Creek below dam USGS 14202980 |
~147 cfs early Fri PT Oct 2 |
Modest early-October release below Scoggins — soft current near the dam-face neighborhood, not a sweeping generation push inside the pool. Soft outflow→bite only. |
| Access / park context Washington County Parks · Scoggins Valley |
Confirm C-Ramp / Eagle Point / Sain Creek hours and any seasonal notices | Metro weekend traffic is the real crowd board — earlier launch still beats the picnic stack even without a trail blast-off. |
Failover before launch: Washington County Parks Scoggins Valley · BOR RISE / Hydromet Scoggins · USGS 14202980. Dam restricted zones stay off-limits. Soft pool→bite only when elev is thin — fish rock and points you can see.
Dam Overlook / lower rock
Dam Overlook riprap and the first deep rock edge fish a classic early-fall Hagg pattern: crawfish on stone early, then smallmouth sliding deeper along points as the sun climbs. Keep a safe buffer from restricted water.
Eagle Point · Sain Creek
Eagle Point banks and Sain Creek no-wake cove favor bank and kayak when metro boat traffic stacks the main bowl. Calm dawn pockets favor a compact tube; any light breeze favors a windward rip along rock after mid-morning.
HOW TO FISH IT — BANK / KAYAK / BOAT
Bank
Shared: Cool Friday dawns and hot Saturday–Sunday afternoons reward a shell early and water later; PFDs on wet rock; dam restricted zones stay off-limits. Start on Dam Overlook riprap and Eagle Point shore before picnic traffic, then rotate to Sain Creek Rec Area walking water for quieter rock. Dawn under the sunny high favors a compact tube or Ned along visible stone; once the sun climbs Saturday–Sunday, slow down with a green-pumpkin creature or light football jig along deeper points and shaded banks near the park day-use lanes.
Kayak
Launch Sain Creek or Scoggins Creek Rec Area when you want short paddles into no-wake rock pockets boats rush past. On calmer dawn pockets Friday–Sunday, work lee riprap with a ⅜-oz swim jig or tube where bait marks, then slide a small crank parallel to Eagle Point stone once the sun hits rock. Pack a dry bag — metro evenings cool after sundown PT — and give bigger boats the main-bowl lanes around C-Ramp after late morning once weekend recreational traffic stacks up.
Boat
C-Ramp and Eagle Point ramp put you closest to classic fall Hagg transitions: Dam Overlook riprap, main-lake points, and Sain Creek rock where crawfish pull smallmouth. Idle the first hour on a tube or waking bait along stone edges, then slide to deeper points and 8–15 ft rock with a Ned or light football jig as the sun climbs. Confirm park ramp notes if trailer depth looked skinny last trip — thin elev boards still fish rock you can see. Weekend metro recreational traffic builds by late morning even without a trail blast-off.
LURE BOX
Top
- Walking bait in slick dawn pockets along rock
- Compact buzzbait on shaded riprap edges
- Small popper when bait is sipping
Mid
- ⅜ oz swim jig (green pumpkin / craw)
- Tube parallel to riprap and points
- Small crank / squarebill along rock transitions
- Spinnerbait if any breeze stacks a rip
Bottom
- Ned or light football jig on dam-face rock
- Drop-shot on deeper points midday
- Texas-rig creature in brush pockets
- Wacky stickbait when fish suspend off stone
Stain / clear match: Natural craw and green-pumpkin on clearer main-lake rock; slightly darker profiles if Scoggins release color shows near the dam face. Tie colors to crawfish and leftover baitfish first.
BASS LIFE STAGE
Early-fall transition on Henry Hagg. Cooler nights in the low-to-mid 50s and a warming sunny high should pull smallmouth onto riprap, points, and the first rock transitions while keeping them honest around brush and dam-face stone. Fish are not locked on a winter deep stack yet — treat this as a morning-shallow, midday-slide pattern as highs climb into the mid-80s. Skip the spawn talk; that chapter is closed.
What’s on the menu: Dated hatch reports for this exact window are thin. Most-likely forage this weekend is crawfish on riprap and points, with leftover juvenile baitfish wherever birds tip a school, and panfish / stocked trout leftovers in quieter coves. Start on craw-colored tubes and Neds; keep a baitfish-profile swim jig ready when schools mark midday.
ALSO HOT / ALSO IN SEASON
Largemouth · brush pockets
Hagg holds largemouth in brushier pockets and softer banks — keep a creature or swim jig ready when smallmouth rock goes quiet. Soft language only; confirm seasons and creel on the live ODFW page before you keep fish.
Stocked trout · crappie
Stocked trout and crappie matter for mixed bags in cooler arms and night bites. Same access rules as bass — legal bank and ramp water only.
Crowd / Heavy Traffic
No named Oregon club / trail event pulled for Fri Oct 2 – Sun Oct 4 on Henry Hagg / Scoggins Valley. Metro recreational pressure is the crowd factor — expect picnic and ski traffic at C-Ramp / Eagle Point by late morning Saturday–Sunday. Weekend trail traffic elsewhere stays on Siltcoos / Lower Columbia / John Day Pool — not here. Earlier launch still beats the picnic stack.
Looking ahead
NWS trend stays dry and warm into early next week with highs pushing the mid-to-upper 80s — classic early-October Hagg mornings if nights stay cool. Heavy Traffic this weekend stays on other OR waters — none named Henry Hagg at the early-Friday pull. Next Cast: Monday window.
Pure-Gas.org E0 · this water
Ethanol-free stations near the Forest Grove / Cornelius / Yamhill corridor (no pump prices).
- Marathon — 3619 Pacific Ave, Forest Grove, OR (~7.3 mi) · ethanol-free MARATHON 93 on Pure-Gas.org — verify grade
- Econo Gas — 845 N Adair Street, Cornelius, OR (~8.3 mi) · ethanol-free SPACE AGE 92 on Pure-Gas.org — verify grade
- Valley Market — 210 S Maple St., Yamhill, OR (~9.2 mi) · ethanol-free MARATHON 92 on Pure-Gas.org — verify grade
- Carlton Corners — 150 N Yamhill St, Carlton, OR (~12.4 mi) · ethanol-free UNBRANDED 92 on Pure-Gas.org — verify grade
Stations from Pure-Gas.org OR list (saved for this water). Listings move — verify literal E0 / ethanol-free grade at the pump. No pump prices published in this Cast.
Sources: NWS Portland (PQR) north-band corridor forecast grid PQR 121,64 · METAR KHIO / KSLE · USGS 14202980 Scoggins Creek below Henry Hagg · BOR Scoggins / Washington County Parks Scoggins Valley · orbass.com Oregon master schedule · Pure-Gas.org ethanol-free station directory · ODFW Willamette Zone recreation report (live regs). Schedules change — confirm pool, ramps, and the forecast before launch.
Freshwater Cast · Friday Cast · Henry Hagg Lake · Fri Oct 2 – Sun Oct 4, 2026 · drafted Fri Oct 2, 2026 ~6:50 AM PT