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Shadehill: Quiet USBR pool — walleye first in northwest SD
Monday Sep 21 – Thursday Sep 24, 2026 · Shadehill Reservoir · bank, kayak & boat · Monday morning through Thursday evening focus · times CT
Shadehill Dam nearly idle on tonight’s bulletin. Fish structure and fall bait, not current.
Midweek outlook
**NWS** pin forecast for Shadehill Reservoir (pulled Sun Sep 20 ~8:45–8:55 PM CT). Monday reads **Mostly Cloudy** (~63°F); Thursday trends **Mostly Sunny** (~79°F). All clock times **CT**.
Barometer: KHEI baro blank at pull (not invented). Clarity unconfirmed — do not invent stain.
Mon–Thuthrough Thu evening CT
walleyelocalized — not bass-by-default
Weekday recreational soft Mon–Thu after residual weekend traffic Monday. No named trail event pulled for this window on this water — re-check local clubs before launch.
Monday
- High ~63°F / night ~44°F **CT** · 3 to 9 mph E · PoP ~10%
- Mostly Cloudy
- Primary **walleye**: fish weather pauses and forage edges — not a bass-by-default week.
Tuesday
- High ~66°F / night ~49°F **CT** · 10 to 22 mph SE · PoP ~0%
- Partly Sunny
- Primary **walleye**: fish weather pauses and forage edges — not a bass-by-default week.
Wednesday
- High ~74°F / night ~51°F **CT** · 14 to 22 mph SE · PoP ~45%
- Chance Showers And Thunderstorms
- Primary **walleye**: fish weather pauses and forage edges — not a bass-by-default week.
Thursday
- High ~79°F / night ~53°F **CT** · 1 to 5 mph E · PoP ~1%
- Mostly Sunny
- Primary **walleye**: fish weather pauses and forage edges — not a bass-by-default week.
Verify local CT sunrise/sunset at pin (~7:05–7:10 AM CT class Monday Pierre/Watertown corridor). All Cast times CT.
Generator / pool cheat sheet
Live **USACE Missouri River Basin Water Management** board pulled **2026-09-20 ~8:13 PM CT** (https://www.nwd-mr.usace.army.mil/rcc/reports/pdfs/MRBWM_Reservoir.pdf). Sunday elev/inflow/release only — **Mon–Thu hourly unit blocks not on this bulletin**; soft re-check language.
| Lake | Sun observed | Inflow / release | Notes |
|---|---|---|---|
| Shadehill Dam | Elev **2265.68 ft** (Δ -0.01) | In ~0 cfs · out ~21 cfs | MP ~75.8% · verify dam boards before you go |
USBR / SD GFP · Shadehill Dam
Primary story: walleye. Secondaries: northern pike, smallmouth bass, yellow perch.
Failover
Re-check USACE/USBR/NWS boards before launch — Sunday numbers age fast.
Schedules change without notice — re-check USACE / USBR / NWS before launch.
How to fish it — Bank / Kayak / Boat
Bank
- Dawn/dusk points and riprap with live bait or a slow jig — walleye first.
- Wind-blown banks after showers if safe.
- Watch slippery clay launches after Monday rain.
Kayak
- Parallel rock transitions and current seams (mainstem) or weed edges (glacial).
- Stake lightly — September walleye slide deeper midday.
- PFD on; midweek SW winds can stack chop on big water.
Boat
- Graph bait and follow birds/white-bass boils to find walleye underneath.
- Lead-core or snap-weights along breaks if wind allows.
- Idle zones near ramps if weekend leftovers linger Monday.
Lure box — Top / Mid / Bottom
Top
- Small buzz/walker only if bait is breaking — otherwise skip topwater.
- Long-bomb crank only on rare calm windows.
- Whites/SMB may crash bait — keep one reaction rod ready.
Mid
- Shad-profile cranks and swimbaits along windward breaks.
- Spinner harness + crawler where effective.
- Hair jig or soft plastic on rock for SMB bycatch.
Bottom
- Jig + minnow/plastic on points and river channel edges.
- Live-bait rig off the break as nights cool.
- Blade bait / hair jig when wind stands fish up.
Stain/clear: Clarity unconfirmed at pull — start natural/chrome and darken only if you see stain.
Life stage + What’s on the menu
**Late summer → early fall transition.** Cooler nights pulling **walleye** toward breaks and bait schools. Residual mild afternoons Wednesday–Thursday.
**What’s on the menu** (seasonal, not a dated hatch): YOY shad/minnows on mainstem; perch and invertebrates on glacial lakes. Match profile — do not invent a hatch date.
Ethanol-free fuel near this water
Pure-Gas.org E0 · near this water
Source: Pure-Gas.orgpulled Sun Sep 20, 2026 ~8:55 PM CT. Current prices — may change; verify at the pump.
- Lemmon Iga, 19190 Us Highway 12, Lemmon, SD — ~12.8 mi · E0 listing · Ethanol-free UNBRANDED 91; GPS located from addressprice not listed — verify at pump
- Kum & Go #2811, 306 Adams Ave, Hettinger, ND — ~27.1 mi · E0 listing · Ethanol-free KUM & GO 91; GPS located from addressprice not listed — verify at pump
- M & D Food Shop, Us Hwy 212, Faith, SD — ~50.8 mi · E0 listing · Ethanol-free SINCLAIR 86; GPS entered by Samprice not listed — verify at pump
- Farmer's Union Oil, Us Hwy 212, Dupree, SD — ~56.1 mi · E0 listing · Ethanol-free CENEX 85; GPS entered by Jonathan Lathburyprice not listed — verify at pump
Also hot / also in season
- northern pike — honest secondary this week
- smallmouth bass — honest secondary this week
- yellow perch — honest secondary this week
- Regs: SD GFP Fishinglive-check only — do not hardcode inches/creel.
Regs: live-check only — never hardcode length/creel in Cast text.