Spring Creek · Sand Gravel · Wisconsin, US

Bluff Creek (Kettle Moraine)

Bluff Creek is a two-mile spring creek in the Kettle Moraine southeast of Whitewater, among the nearest genuinely wild trout to Chicago.

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 4 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
Brown Trout fly box
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
About this water

Bluff Creek is a two-mile spring creek in the Kettle Moraine southeast of Whitewater, among the nearest genuinely wild trout to Chicago. WDNR rates its upper reach Class I trout water with a naturally reproducing brown trout population (headwaters to CTH P are also an Exceptional Resource Water), and the lower end is stocked. It's tiny, brushy and cold all summer from its springs, so it's all short casts, careful wading and patience. Numbers are low and the fish are wild, so treat them that way.

  • Sand gravel
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