Spring Creek · Limestone · Wisconsin, US

Timber Coulee Creek

Timber Coulee Creek terrain map

The most famous water in the Driftless and, by reputation, one of the densest trout streams in the country — something like four hundred pounds of brown trout to the acre, which is a number that sounds made up until you fish it.

Tomorrow · Not the day for it
Scud
Forecast · Tomorrow
Not the day for it
Not much stacked in your favour today. Worth an hour if you are nearby, not worth the special trip.
45% projected
Today's fly
Scud
Scud
Conditions on the water · Tomorrow
Proxy gauge
Level
Rising
Proxy
via West Fork Kickapoo River
Water temp16.8°C
ClarityUnfishable
Weather24°C
WindN 14 km/h
Pressure1013 hPa
Rain · recent0.4 mm
Rain · ahead8.4 mm

No gauge on this water — conditions are inferred from West Fork Kickapoo River. The trend transfers, the absolute level does not.

Water temperature for Brown Trout
Warm — slow
17°C est.ideal 1016°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Water at 20°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Likely species
Hatch timeline · tomorrowPeak at 7am

12pm(now) Grasshopper (Eastern)

Stage: Terrestrials on topApproach: Dry flyActivity: 38%
Also:Trico (Eastern)33%Reed Smut33%
Peak emergence windowWeather boostEmergence building5 food groups active

Peak activity at 7am — Trico (Eastern) (Trico (Eastern), Degree-days at peak)

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 4 with Pro.

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Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
SulphurHatch
2
3
2
Trico (Eastern)Hatch
2
3
3
2
Eastern Blue-Winged OliveHatch
2
3
3
3
3
3
3
3
2
Eastern Summer BWO (Drunella)Hatch
2
3
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Brown Trout fly box
Local fly shops: Driftless Angler
Permits & access
Permit required — see local rules.
  • WI DNR — stretches of the Coon Creek watershed carry special artificial-only/C&R regs; verify by reach.
What's coming
Plan ahead
5-day outlook
Water here around 20°C. Nothing cooler within range — carry a thermometer.
About this water

The most famous water in the Driftless and, by reputation, one of the densest trout streams in the country — something like four hundred pounds of brown trout to the acre, which is a number that sounds made up until you fish it. A restored limestone spring creek that runs cold and clear through a narrow coulee, so the trout see everything and forgive nothing. Fish it light and humble.

Under the surface

Timber Coulee is the heart of the Driftless — that strange, lovely pocket of southwest Wisconsin the glaciers somehow missed, leaving a country of steep wooded ridges and spring-fed limestone valleys where the coldwater creeks run clear and the wild brown trout are thick as anywhere in America. It's a small spring creek winding through a hayfield-and-woodlot coulee, cold and fertile off the limestone aquifer, the subject of decades of habitat work that turned a degraded ditch into a model wild-trout stream. The bed is gravel and silt over limestone, the banks rebuilt with lunker structure and undercut sod, the water clear and bug-rich. Wading is easy on firm gravel, the casting tight against the brush and the grass. Timber Coulee is proof of what spring water and patient restoration can do, and on a good evening with the trout rising along the cut banks, it is as good as small-stream fishing gets.

Wading: Tight brushy casting, soft silt pockets

  • Limestone
  • Unconfined
  • Spring creek
  • Pool riffle
Water quality · US Clean Water Act
  • Aquatic lifeSupporting
What this classification means

EPA ATTAINS assessment unit 'Timber Coulee Creek' (WI10025116), 2024 Integrated Report. Aquatic Life use: Fully Supporting. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · WI10025116

The full read · show the working · for Brown Trout · confidence 80%
How the 26 is built — score × weight = contribution
Temperature13 × 28%3.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity57 × 12%6.8
Limiting factor: Water temperature (20°C) is outside Brown Trout's preferred range (10–16°C)= 59
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via West Fork Kickapoo Riverproxy
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout First Saturday in January (early catch-and-release, artificial only)October 15 (regular harvest season from first Saturday in May)
Related guides
Booking & contacts