Freestone · Mixed · New York, US

Genesee River

Turquoise water of the Genesee River flowing over exposed shale ledges through a forested gorge in Letchworth State Park, New York.
Prime · Brown Trout
Glo Bug · 8-14
Primelive now
About as good as it gets
River high but settled. Coloured water — fish bigger and deeper, confident takes down the seams.
90% confidence
What moved it
  • Level3.89 mLast reading 2h ago
  • Water temp14.8°C
  • ClarityClear
Today's fly
Glo Bug
Glo Bug8-14
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
3.89 m
Last reading 2h ago
Water temp14.8°C
ClarityClear
Weather7°C
WindNW 17 km/h
Pressure1029 hPa
Rain · recent8.7 mm
Rain · ahead0.0 mm

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

Water temperature for Brown Trout
Ideal
14.8°Cideal 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 · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 5 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

Supporters see what else is on the menu.

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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
Brown DunHatch
2
3
3
3
3
3
3
2
Quill GordonHatch
2
2
Blue QuillHatch
2
3
2
HendricksonHatch
2
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.
  • New York licence; verify NY DEC rules and gorge access
  • Introduced, harvestable sport fishery.
What's coming
Plan ahead
5-day outlook
Other water nearby · 4
Oak Orchard Creek
55 km
86
Steelhead · Chinook salmon · Coho salmon
Oswego River
96 km
84
Steelhead · Chinook salmon · Coho salmon
Lower Niagara River
117 km
87
Steelhead · Brown trout · Chinook salmon
Salmon River
130 km
87
Steelhead · Chinook salmon · Coho salmon
Gallery · 2
  1. Turquoise water of the Genesee River flowing over exposed shale ledges through a forested gorge in Letchworth State Park, New York.
    The Genesee River carving through the shale gorge of Letchworth State Park, New York.
  2. Terrain map of the venue
    Terrain map
Water quality · US Clean Water Act
  • Aquatic life: Impaired
What this classification means

EPA ATTAINS assessment unit 'Genesee River, Lower, Main Stem' (NY0401-0001), 2022 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Metals Other Than Mercury, Pathogens, Polychlorinated Biphenyls PCBs, Pesticides, Dioxins. 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) · NY0401-0001

The full read · show the working · for Brown Trout · confidence 90%
How the 86 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time85 × 13%11.1
Pressure80 × 7%5.6
Insect activity58 × 12%7.0
Conditions total= 86
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Related guides
Euro Nymphingsubsurface methods
Booking & contacts