Spring Creek · Mixed · Idaho

Silver Creek

Silver Creek venue image
Poor · Rainbow Trout
Foam Ant · 14-18
Poorlive now
Not the day for it
River high but settled. Not much stacked in your favour today. Worth an hour if you are nearby, not worth the special trip.
80% confidence
What moved it
  • Level2.06 mLast reading 6h ago
  • Water temp21.9°C
  • ClarityClear
Today's fly
Foam Ant
Foam Ant14-18
Proven pattern for this period
Conditions on the water
Live gauge
Level
Steady
2.06 m
Last reading 6h ago
Water temp21.9°C
ClarityClear
Weather32°C
WindSW 19 km/h
Pressure1010 hPa
Rain · recent2.2 mm
Rain · ahead0.0 mm

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

Water temperature for Rainbow Trout
Warm — slow
21.9°Cideal 10–18°C
0°14°28°
How to fish it · for Rainbow 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 21.9°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

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 4 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
Western Blue-Winged OliveHatch
2
3
3
3
3
3
3
3
2
Pale Morning DunHatch
2
3
3
2
TricoHatch
2
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2

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

Ranked for today
Rainbow Trout fly box
Gammarus Scud (Olive)
Gammarus Scud (Olive)
12-16 · Gammarus Scud
Dead-drift, sub-surface
Permits & access
Permit required — see local rules.
  • Idaho licence
  • The Nature Conservancy Preserve is barbless catch-and-release — verify the special regulations before fishing.
What's coming
Plan ahead
5-day outlook
Water here at 21.9°C. Nothing cooler within range.
Gallery · 1
  1. Terrain map of the venue
    Terrain map
Water quality · US Clean Water Act
  • Aquatic life: Impaired
What this classification means

EPA ATTAINS assessment unit 'Silver Creek - source to mouth' (ID17040221SK023_03), 2022 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Temperature, Cause Unknown Impaired Biota. 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) · ID17040221SK023_03

The full read · show the working · for Rainbow Trout · confidence 80%
How the 16 is built — score × weight = contribution
Temperature12 × 28%3.4
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time40 × 13%5.2
Pressure75 × 7%5.3
Insect activity62 × 12%7.4
Limiting factor: Water temperature (21.9°C) is outside Rainbow Trout's preferred range (10–18°C)= 54
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 10–18 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • TroutSaturday of Memorial Day weekend → 30 November
Related guides
Euro Nymphingsubsurface methods
Booking & contacts