Damselflies & dragonflies
Gammarids
A big, powerful river dropping into Lake Ontario at Oswego, where salmon and steelhead stack below the downtown dam. Heavy water that fishes well for those who can get a fly down, with a strong fall salmon run and steelhead behind it.
- Mixed
Rules at a glance
- Fly only
Water temperature for Steelhead
Ideal11°C est.ideal 4–13°C
0°14°28°
Typical for this reach at this time of year, fitted to the river's own record — not a reading of today's release. A change at the dam can move it several degrees within hours. It also warms as it runs away from the dam.
How to fish it · for Steelhead
When
Salmon Sep–Oct; steelhead Oct–Apr
Where
A big, powerful river dropping into Lake Ontario at Oswego, where salmon and steelhead stack below the downtown dam.
Why this works
Poor — barometric pressure is working for you, but water clarity is the limiting factor today.
Likely species
Hatch timeline · todayPeak at 12pm
12pm(now) — Eastern Blue-Winged Olive
Stage: On emergersApproach: Emerger or dryActivity: 56%
Also:Black Midge23%
Peak emergence window4 food groups active
Peak activity at 12pm — 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.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 as a supporter.
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 · 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
Steelhead fly box
Permits & access
Permit required — see local rules.
- New York licence; verify NY DEC rules and the downtown-dam access
- Introduced, harvestable sport fishery.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 3
Gallery · 2
Terrain map
About this water
Water quality · US Clean Water Act
- Aquatic life: Supporting
What this classification means
EPA ATTAINS assessment unit 'Oswego River, Lower, Main Stem' (NY0701-0022), 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) · NY0701-0022
Why this score · for Steelhead
- Temperature3928% weight
- Flow5522% weight
- Clarity1518% weight
- Feeding Time5513% weight
- Pressure757% weight
- Insect activity3712% weight
Directions
Related guides
Booking & contacts
Oswego River
A big, powerful river dropping into Lake Ontario at Oswego, where salmon and steelhead stack below the downtown dam.
Water temperature for Steelhead
Ideal11°C est.ideal 4–13°C
0°14°28°
Typical for this reach at this time of year, fitted to the river's own record — not a reading of today's release. A change at the dam can move it several degrees within hours. It also warms as it runs away from the dam.
How to fish it · for Steelhead
When
Salmon Sep–Oct; steelhead Oct–Apr
Where
A big, powerful river dropping into Lake Ontario at Oswego, where salmon and steelhead stack below the downtown dam.
Why this works
Poor — barometric pressure is working for you, but water clarity is the limiting factor today.
Likely species
Hatch timeline · todayPeak at 12pm
12pm(now) — Eastern Blue-Winged Olive
Stage: On emergersApproach: Emerger or dryActivity: 56%
Also:Black Midge23%
Peak emergence window4 food groups active
Peak activity at 12pm — 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.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 as a supporter.
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 · 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
Steelhead fly box
Permits & access
Permit required — see local rules.
- New York licence; verify NY DEC rules and the downtown-dam access
- Introduced, harvestable sport fishery.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 3
Gallery · 2
Terrain map
About this water
A big, powerful river dropping into Lake Ontario at Oswego, where salmon and steelhead stack below the downtown dam. Heavy water that fishes well for those who can get a fly down, with a strong fall salmon run and steelhead behind it.
- Mixed
Water quality · US Clean Water Act
- Aquatic life: Supporting
What this classification means
EPA ATTAINS assessment unit 'Oswego River, Lower, Main Stem' (NY0701-0022), 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) · NY0701-0022
Why this score · for Steelhead
- Temperature3928% weight
- Flow5522% weight
- Clarity1518% weight
- Feeding Time5513% weight
- Pressure757% weight
- Insect activity3712% weight
Directions
Related guides
Booking & contacts