Mongaup River West Branch
NYSDEC reported 620 trout stocked in Mongaup River West Branch (Sullivan County) in 2025, the latest year in its stocking lists. The most recent month listed is April 2025. DEC lists stocking by month, not by day.
NYSDEC data pulled .

Mongaup River West Branch in numbers
- trout stocked in 2025
- 620
- yearly average, 2020–2024
- 522
- 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. DEC lists each batch with its average length; where a month has several batches the range is shown.
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| April | Brown trout620 fish · Average length: 7.1–13.9 in | 620 | 2 | 7.1–13.9 in |
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| April | Brown trout590 fish · Average length: 8.2–13.4 in | 590 | 2 | 8.2–13.4 in |
| Month | Species | Fish | Batches | Average length |
|---|---|---|---|---|
| April | Brown trout590 fish · Average length: 8.9–13.1 in | 590 | 2 | 8.9–13.1 in |
| Year | Fish |
|---|---|
| 2025620 fish | 620 |
| 2024590 fish | 590 |
| 2023590 fish | 590 |
| 2022590 fish | 590 |
| 2021590 fish | 590 |
| 2020250 fish | 250 |
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 | 3,230 | 100% |
No single map point is given for this water in the USGS names database, so no map is shown.
Also in Sullivan County: Willowemoc Creek, Beaver Kill, Callicoon Creek East Branch, Callicoon Creek North Branch, Neversink River, Ten Mile River, Neversink Reservoir, Beaver Brook.
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.