Spring Creek · Limestone · Iowa, US

Spring Branch

Spring Branch terrain map
Today · Not the day for it
Pink Shrimp
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
Pink Shrimp
Pink Shrimp
Conditions on the water · Today
Estimate
Level
Light rain recently
No gauge reading
Water temp12.9°C
ClarityUnfishable
Weather7°C
WindN 6 km/h
Pressure1034 hPa
Rain · recent9.6 mm
Rain · ahead0.0 mm

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

Water temperature for Brown Trout
Ideal
13°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.
Why this works
Excellent — water temperature is right today, though insect activity could be better.
Likely species
Mayflies
Chironomids
Gammarids
Hatch timeline · todayPeak at 12h

12h(now) — Eastern Blue-Winged Olive

Stage: On emergersApproach: Emerger or dryActivity: 38%
Peak emergence window

Peak activity at 12h — Eastern Blue-Winged Olive (Eastern Blue-Winged Olive, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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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
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
Local fly shops: Driftless Fly Fishing Co.
Permits & access
Permit required — see local rules.
  • Iowa DNR — verify regulations and stocking schedule.
What's coming
Plan ahead
5-day outlook
The full read · show the working · for Brown Trout · confidence 90%
How the 84 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 activity59 × 12%7.1
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 Open all year → Open all year
Related guides
Euro Nymphingsubsurface methods
Booking & contacts