Grass River
NYSDEC reported 1,410 trout stocked in Grass River (St Lawrence 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 .
Grass River in numbers
- trout stocked in 2025
- 1,410
- yearly average, 2020–2024
- 1,838
- 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 |
|---|---|---|---|
| May - second week 2026 | Brown trout1,290 fish | 1,290 | 9– 10 inches |
| May - second week 2026 | Brown trout150 fish | 150 | 12–15 inches |
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| May | Brown trout1,410 fish · Average length: 8.3–13.3 in | 1,410 | 4 | 8.3–13.3 in |
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| May | Brown trout1,360 fish · Average length: 9.3–13.2 in | 1,360 | 4 | 9.3–13.2 in |
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| May | Brown trout730 fish · Average length: 9.4–13.4 in | 730 | 2 | 9.4–13.4 in |
| Year | Fish |
|---|---|
| 20251,410 fish | 1,410 |
| 20241,360 fish | 1,360 |
| 2023730 fish | 730 |
| 20222,140 fish | 2,140 |
| 20212,170 fish | 2,170 |
| 20202,790 fish | 2,790 |
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 | 9,320 | 88% |
| Brook trout | 1,280 | 12% |
No single map point is given for this water in the USGS names database, so no map is shown.
Also in St Lawrence County: Plumb Brook, Ozonia Lake, St. Regis River, Grass River South Branch, Star Lake, Oswegatchie River, Hopkinton Brook, Little River.
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.