Spring Creek · Limestone · Pennsylvania, US

Letort Spring Run

View from one of the various bridges on the Letort Spring Run Nature Trail
Today · About as good as it gets
Pink Shrimp
Forecast · Today
About as good as it gets
On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
90% projected
Today's fly
Pink Shrimp
Pink Shrimp
Conditions on the water · Today
Proxy gauge
Level
Falling
Proxy
via Spring Creek
Water temp14.1°C
ClaritySlightly coloured
Weather10°C
WindN 19 km/h
Pressure1022 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

No gauge on this water — conditions are inferred from Spring Creek. The trend transfers, the absolute level does not.

Water temperature for Brown Trout
Ideal
14°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 time of day 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: 40%
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
Trout seasonSeason
1
2
2
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
Permits & access
Permit required — see local rules.
  • PA Heritage Trout Angling C&R, fly-fishing-only on the managed section — verify reach.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Yellow Breeches Creek
8.0 km
84
Brown trout · Rainbow trout
Big Spring Creek
19 km
84
Brook trout · Brown trout
Falling Spring Branch
49 km
89
Brown trout · Rainbow trout
Gallery · 2
  1. View from one of the various bridges on the Letort Spring Run Nature Trail
  2. Terrain map of the venue
    Terrain map
Water quality · US Clean Water Act
  • Aquatic life: Not assessed
What this classification means

EPA ATTAINS assessment unit 'Letort Spring Run-56407101' (PA-SCR-56407101), 2024 Integrated Report. Aquatic Life use: not assessed. 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) · PA-SCR-56407101

The full read · show the working · for Brown Trout · confidence 90%
How the 82 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity56 × 12%6.7
Conditions total= 82
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Spring Creekproxy
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 January → 31 December
Related guides
Euro Nymphingsubsurface methods
Booking & contacts