Mayflies
Caddisflies
A wild brookie stream falling off Spruce Knob, the roof of West Virginia — high, cold and acidic, with small native specks in step-pool water under spruce and rhododendron. A walk-in fish-high-and-light kind of day.
- Acidic sandstone
Water temperature for Brook Trout
Warm — slow17°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brook 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
Caddisflies
- Tan Caddis / Spotted SedgeMost likelyLower confidenceNearest relative#14–16 · Adult
- Green Caddis / Rock WormAlso possibleLower confidence#14 · Adult
- October CaddisAlso possibleLower confidenceNearest relative#6–8–10 · Adult
- Little Black Caddis (East)Also possibleLower confidenceNearest relative#16–18–20 · Adult
Hatch timeline · todayPeak at 6pm
12pm(now) — Flying Ants
Stage: Terrestrials on topApproach: Dry flyActivity: 33%
Also:Reed Smut29%
Peak emergence windowWeather boost3 food groups active
Peak activity at 6pm — Slate Drake / Isonychia (Slate Drake / Isonychia, 5 food groups active)
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sculpin (North America)Hatch
2
3
2
Brown DunHatch
2
3
3
3
3
3
3
2
Early Black StoneflyHatch
2
3
2
Eastern Golden StoneHatch
2
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brook Trout fly box
What's coming
Plan ahead
5-day outlook
About this water
Conservation note
Native wild brook-trout headwater below WV's highest point. brook_trout scores as a conservation-first char comfort-overlay post-seed (char welfare ceiling ~20°C).
Water quality · US Clean Water Act
- Aquatic life: Supporting
What this classification means
EPA ATTAINS assessment unit 'Seneca Creek' (WV-PSB-105-BB_01), 2022 Integrated Report. Aquatic Life use: Fully Supporting. 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) · WV-PSB-105-BB_01
The full read · show the working · for Brook Trout · confidence 75%
How the 82 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure75 × 7%5.3
Insect activity45 × 12%5.4
Conditions total= 83
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Directions
Related guides
Booking & contacts
Seneca Creek
A wild brookie stream falling off Spruce Knob, the roof of West Virginia — high, cold and acidic, with small native specks in step-pool water under spruce and rhododendron.
Water temperature for Brook Trout
Warm — slow17°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brook 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
Caddisflies
- Tan Caddis / Spotted SedgeMost likelyLower confidenceNearest relative#14–16 · Adult
- Green Caddis / Rock WormAlso possibleLower confidence#14 · Adult
- October CaddisAlso possibleLower confidenceNearest relative#6–8–10 · Adult
- Little Black Caddis (East)Also possibleLower confidenceNearest relative#16–18–20 · Adult
Hatch timeline · todayPeak at 6pm
12pm(now) — Flying Ants
Stage: Terrestrials on topApproach: Dry flyActivity: 33%
Also:Reed Smut29%
Peak emergence windowWeather boost3 food groups active
Peak activity at 6pm — Slate Drake / Isonychia (Slate Drake / Isonychia, 5 food groups active)
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sculpin (North America)Hatch
2
3
2
Brown DunHatch
2
3
3
3
3
3
3
2
Early Black StoneflyHatch
2
3
2
Eastern Golden StoneHatch
2
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brook Trout fly box
What's coming
Plan ahead
5-day outlook
About this water
A wild brookie stream falling off Spruce Knob, the roof of West Virginia — high, cold and acidic, with small native specks in step-pool water under spruce and rhododendron. A walk-in fish-high-and-light kind of day.
- Acidic sandstone
Conservation note
Native wild brook-trout headwater below WV's highest point. brook_trout scores as a conservation-first char comfort-overlay post-seed (char welfare ceiling ~20°C).
Water quality · US Clean Water Act
- Aquatic life: Supporting
What this classification means
EPA ATTAINS assessment unit 'Seneca Creek' (WV-PSB-105-BB_01), 2022 Integrated Report. Aquatic Life use: Fully Supporting. 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) · WV-PSB-105-BB_01
The full read · show the working · for Brook Trout · confidence 75%
How the 82 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure75 × 7%5.3
Insect activity45 × 12%5.4
Conditions total= 83
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Directions
Related guides
Booking & contacts