Spring Creek · Limestone · Wisconsin

Black Earth Creek

Black Earth Creek terrain map

Cited more than once as one of the best trout streams in the country, and remarkable for running so close to Madison — a Class I wild-brown fishery on the edge of a city.

Poor · Rainbow Trout
Pink Squirrel · 14-16
Poorlive now
Not the day for it
River steady at a fishable height. Not much stacked in your favour today. Worth an hour if you are nearby, not worth the special trip.
90% confidence
What moved it
  • Level0.62 mLast reading 17h ago
  • Water temp22.1°C
  • ClarityClear
Today's fly
Pink Squirrel
Pink Squirrel14-16
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.62 m
Last reading 17h ago
Water temp22.1°C
ClarityClear
Weather25°C
WindW 17 km/h
Pressure1010 hPa
Rain · recent0.0 mm
Rain · ahead2.7 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for Rainbow Trout
Warm — slow
22°C est.ideal 1018°C
0°14°28°
How to fish it · for Rainbow 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 22.1°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 2 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 4 with Pro.

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Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July 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
Rainbow Trout fly box
SU
Sulphur
16-18 · Pattern
Proven pattern for this period
Local fly shops: Driftless Angler
Permits & access
Permit required — see local rules.
  • WI DNR — portions are Class I with special regs; verify.
What's coming
Plan ahead
5-day outlook
Water here around 22°C. Nothing cooler within range — carry a thermometer.
About this water

Cited more than once as one of the best trout streams in the country, and remarkable for running so close to Madison — a Class I wild-brown fishery on the edge of a city. A rich limestone creek with heavy hatches and trout that grow fat and selective. The downside of fame is company, so fish the early and late ends of the day.

Under the surface

Black Earth Creek runs through the farm country west of Madison as one of the Driftless region's most celebrated spring creeks — a fertile, cold, limestone-fed stream that grows wild brown trout to sizes a creek this small has no right to, on a relentless supply of scuds, sowbugs and mayflies. It winds through pasture and village over a bed of gravel, silt and the rooted weed that fertile spring creeks grow, the flow steady and cold off the limestone springs, the famous hatches — the spring caddis, the summer Tricos — drawing fish up with reassuring regularity. The character is classic Driftless meadow spring creek: undercut banks, brushy corners, glassy flats. Wading is easy on firm footing, the challenge being the tight quarters and the educated trout rather than the water. It is small, close to the city, hard-fished and still excellent — which says everything about how good the underlying water really is.

Wading: Tight quarters, soft silt margins

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

EPA ATTAINS assessment unit 'Black Earth Creek' (WI10002690), 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) · WI10002690

The full read · show the working · for Rainbow Trout · confidence 90%
How the 15 is built — score × weight = contribution
Temperature10 × 28%2.8
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time70 × 13%9.1
Pressure75 × 7%5.3
Insect activity62 × 12%7.4
Limiting factor: Water temperature (22.1°C) is outside Rainbow Trout's preferred range (10–18°C)= 58
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–18 °C ideal band — would lift the score and ease welfare.
Directions
Seasons & zones
  • TroutFirst Saturday in January (early catch-and-release, artificial only)October 15 (regular harvest season from first Saturday in May)
Related guides
Booking & contacts