Spring Creek · Limestone · Wisconsin, US

Black Earth Creek

Black Earth Creek venue image

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.

Today · Not the day for it
Scud
Forecast · Today
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 · Today
Live gauge
Level
Rising
0.65 m
Lifting fast
Water temp17.8°C
ClarityUnfishable
Weather26°C
WindN 9 km/h
Pressure1013 hPa
Rain · recent0.0 mm
Rain · ahead16.8 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Warm — slow
18°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 18.5°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 · todayPeak at 7am

12pm(now) Grasshopper (Eastern)

Stage: Terrestrials on topApproach: Dry flyActivity: 39%
Also:Trico (Eastern)36%Reed Smut31%
Peak emergence windowWeather boostEmergence building5 food groups active

Peak activity at 7am — Trico (Eastern) (Trico (Eastern), Weather boost)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 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 — portions are Class I with special regs; verify.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
Gallery · 1
  1. Terrain map of the venue
    Terrain map
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 Brown Trout · confidence 80%
How the 37 is built — score × weight = contribution
Temperature32 × 28%9.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 67
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 10–16 °C ideal band — would lift the score and ease welfare.
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