Spring Creek · Sand Gravel · Wisconsin, US

Bluff Creek (Kettle Moraine)

Poor · Brown Trout
Blue Winged Olive · 18–22
Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp15.3°C
  • ClarityClear
Today's fly
Blue Winged Olive
Blue Winged Olive18–22
Proven pattern for this period
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp15.3°C
ClarityClear
Weather21°C
WindS 19 km/h
Pressure1018 hPa
Rain · recent0.0 mm
Rain · ahead0.2 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for Brown Trout
Ideal
15°C est.ideal 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.
Likely species
Mayflies
Blackflies
  • Blackfly larvae/pupaeMost likelyLower confidence
    #16–18–20 · Pupa
    Small dark soft-hackle drifted through riffle seams.
Chironomids
Aquatic beetles
Gammarids
Molluscs
  • Pond snailsMost likelyLower confidence
    #10–12–14 · Adult
    Dead-drift or twitch a snail pattern near weed beds.
Oligochaetes
  • Aquatic wormsMost likelyLower confidence
    #12–14–16 · Adult
    Dead-drift a worm pattern deep - a year-round staple.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 4 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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Evidence
Records-basedModerate confidence

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

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
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
Fly box · Brown Trout
PL
Pass Lake
8–12 · Pattern
Proven pattern for this period
Permits & access
Permit required — see local rules.
  • Early C&R season 3 Jan – 3 Apr 2026 (artificial lures); harvest season 4 Apr – 15 Oct
  • Inland trout stamp
  • Verify the 2026–27 bag and length limit.
What's coming
Plan ahead
5-day outlook
Conservation note

Wild, naturally reproducing brown trout in the upper reach (WDNR: headwaters to CTH P is an Exceptional Resource Water); stocked browns lower down.

The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity58 × 12%7.0
Conditions total= 84
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 3 January → 15 October
Related guides
Euro Nymphingsubsurface methods
Booking & contacts