Lake Ontario
NYSDEC reported 118,492 trout stocked in Lake Ontario (Jefferson County) in 2025, the latest year in its stocking lists. The most recent month listed is May 2025. DEC lists stocking by month, not by day.
NYSDEC data pulled .
Lake Ontario in numbers
- trout stocked in 2025
- 118,492
- yearly average, 2020–2024
- 151,873
- years stocked since 2020
- 6
Every stocking record
DEC stocking lists for the last three years on record, by month and species, newest first, then yearly totals, and the spring plan DEC published for this water. DEC lists each batch with its average length; where a month has several batches the range is shown.
| When (DEC wording) | Species | Fish | Size |
|---|---|---|---|
| Mid May 2026 | Brown trout72,930 fish | 72,930 | 8 inches |
| Mid May 2026 | Brown trout10,600 fish | 10,600 | 8 inches |
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| May | Brown trout86,680 fish · Average length: 6.9 in | 86,680 | 2 | 6.9 in |
| May | Lake trout31,812 fish · Average length: 7.2 in | 31,812 | 1 | 7.2 in |
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| May | Brown trout84,320 fish · Average length: 7.3 in | 84,320 | 2 | 7.3 in |
| May | Lake trout79,450 fish · Average length: 6.5–7 in | 79,450 | 2 | 6.5–7 in |
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| May | Brown trout77,100 fish · Average length: 8.3–8.5 in | 77,100 | 2 | 8.3–8.5 in |
| May | Lake trout80,405 fish · Average length: 6.4–6.5 in | 80,405 | 2 | 6.4–6.5 in |
| Year | Fish |
|---|---|
| 2025118,492 fish | 118,492 |
| 2024163,770 fish | 163,770 |
| 2023157,505 fish | 157,505 |
| 2022158,234 fish | 158,234 |
| 2021137,434 fish | 137,434 |
| 2020142,420 fish | 142,420 |
Trout stocked each year
DEC’s lists end with the latest year it has published. The tallest year is yellow.
What is stocked here
| Species | Fish | Share |
|---|---|---|
| Brown trout | 458,188 | 52% |
| Lake trout | 419,667 | 48% |
No single map point is given for this water in the USGS names database, so no map is shown.
Also in Jefferson County: Black River, South Sandy Creek, Sandy Creek, Black Creek, Millsite Lake, Lake of the Woods, Sixberry Lake, Felts Mills Creek.
Source: DEC fish stocking lists (actual), data.ny.gov and the DEC spring trout stocking plan, data.ny.gov, New York State Department of Environmental Conservation. Pulled . Check the agency and the current fishing rules before you go.