Freestone · Mixed · Wisconsin

Milwaukee River

Milwaukee River terrain map

The Milwaukee River is Wisconsin's major urban Lake Michigan steelhead tributary, where salmon, steelhead and browns move into very visible city water.

Marginal · Brown Trout
Hexagenia Dun · 4-8
Marginallive now
Slow going — pick your moments
River temperature is the limiting factor today, not the flow. Fish dawn or dusk if you go at all, and handle everything with extra care.
80% confidence
What moved it
  • Level0.13 m
  • Water temp19.4°C
  • ClarityClear
Today's fly
HD
Hexagenia Dun4-8
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.13 m
Water temp19.4°C
ClarityClear
Weather18°C
WindS 6 km/h
Pressure1020 hPa
Rain · recent0.1 mm
Rain · ahead0.0 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for Brown Trout
Warm — slow
19.4°Cideal 10–16°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 19.4°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 5 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 2 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
Quill GordonHatch
2
2
Blue QuillHatch
2
3
2
HendricksonHatch
2
2
Eastern March BrownHatch
2
2

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • Wisconsin licence with Great Lakes trout/salmon stamp where required; verify WIDNR tributary access and reach rules before launch.
What's coming
Plan ahead
5-day outlook
Water here at 19.4°C. Nothing cooler within range.
About this water

The Milwaukee River is Wisconsin's major urban Lake Michigan steelhead tributary, where salmon, steelhead and browns move into very visible city water. It needs urban-access handling, current WIDNR access links and a clear distinction between lower-river migratory fishing and broader watershed context.

  • Mixed
Water quality · US Clean Water Act
  • Aquatic life: Impaired
  • Fish consumption: Impaired
  • Recreation: Impaired
What this classification means

Fish consumption: Consumption advisory (Metals Other Than Mercury) — fish for sport, not the table.

Recreation: Bacteria/pathogen advisory — mind wading cuts and immersion.

EPA ATTAINS assessment unit 'Milwaukee River' (WI10008752), 2024 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Nutrients, Metals Other Than Mercury, Pathogens, Polychlorinated Biphenyls PCBs. 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) · WI10008752

The full read · show the working · for Brown Trout · confidence 80%
How the 31 is built — score × weight = contribution
Temperature33 × 28%9.2
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 62
Can you trust it?
Water temperaturelive gauge readinggauge
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.
The dawn and dusk windows score higher than the midday lull.
Related guides
Euro Nymphingsubsurface methods
Booking & contacts