West Branch Oswegatchie River fishing guide
A 64-mile river in Lewis, St. Lawrence and Herkimer counties, New York. The state agency lists 2 species here and last stocked it in May 2024. It has 3 public access points and 1 live sensor on the water.
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Live sensors on this water
- West Branch Oswegatchie River near Harrisville NY · flow, water level · USGS 04262500
West Branch Oswegatchie River flow
Flow gauge: West Branch Oswegatchie River near Harrisville NY, USGS 04262500 . The forecast above shows its latest reading and band: Fishable up to this month's typical high (75th percentile), High up to the 90th percentile, Blown out above that.
Typical flow by month
Typical is the middle half of daily mean flows in that month (25th to 75th percentile), from 20–21 years of USGS records.
| Month | Typical flow (cfs) | Median (cfs) | Blown out above (cfs) |
|---|---|---|---|
| January | 299–715 | 423 | 1,242 |
| February | 226–515 | 309 | 1,026 |
| March | 345–1,153 | 709 | 1,810 |
| April | 604–1,533 | 899 | 2,191 |
| May | 312–786 | 472 | 1,218 |
| June | 198–535 | 316 | 879 |
| July | 138–395 | 225 | 683 |
| August | 93–351 | 175 | 740 |
| September | 84–213 | 145 | 326 |
| October | 160–573 | 327 | 1,104 |
| November | 340–754 | 509 | 1,141 |
| December | 391–877 | 562 | 1,361 |
Fish species in West Branch Oswegatchie River
Species on the official fishing-waters list from New York State Department of Environmental Conservation. Species links open our guide to that fish in New York.
| Species | Status | Last stocked |
|---|---|---|
| Brook Trout | Agency list | May 2024 |
| Brown Trout | Agency list | Jun 2022 |
Stocking history
Last stocked May 2024: brook trout catchable. 28 stocking records in the last 10 years, 16,830 fish in all, from New York State Department of Environmental Conservation. Each row below sums the agency's records for one month, species and size.
| Date | Species | Size | Fish stocked |
|---|---|---|---|
| May 2024 | Brook Trout | catchable | 1,850 |
| May 2023 | Brook Trout | fry | 1,930 |
| Jun 2022 | Brown Trout | catchable | 110 |
| May 2022 | Brook Trout | yearling | 1,530 |
| May 2021 | Brook Trout | catchable | 1,530 |
| May 2021 | Brown Trout | catchable | 70 |
| May 2020 | Brook Trout | yearling | 1,450 |
| Apr 2020 | Brown Trout | yearling | 590 |
| May 2019 | Brook Trout | yearling | 1,900 |
| May 2019 | Brown Trout | yearling | 710 |
| May 2018 | Brook Trout | yearling | 1,900 |
| May 2018 | Brown Trout | yearling | 700 |
| May 2017 | Brook Trout | catchable | 1,900 |
| May 2017 | Brown Trout | catchable | 660 |
Public access and boat launches
2 carry-in launches and 1 shoreline access site from New York State Department of Environmental Conservation; orange dots on the map above.
Access along the river
- End near Stillwater
- mi 13West Branch Oswegatchie River boat launchCarry-in
- mi 21West Branch Oswegatchie River fishing access (Kilbourne Rd)Shore
- mi 45West Branch Oswegatchie River near Harrisville NYFlow gauge
- mi 59West Branch Oswegatchie River boat launchCarry-in
- End near Talcville
Access points
- West Branch Oswegatchie River boat launchCarry-in
- West Branch Oswegatchie River boat launchCarry-in
- West Branch Oswegatchie River fishing access (Kilbourne Rd)Shore
Regulations
No special regulations for West Branch Oswegatchie River in our data. New York statewide rules apply unless the agency lists a special rule for this water. Seasons, limits and size rules change: check New York fishing regulations before every trip.
Licence: New York fishing licences from New York State Department of Environmental Conservation.
West Branch Oswegatchie River fishing FAQ
What fish are in West Branch Oswegatchie River?
New York State Department of Environmental Conservation lists 2 species for West Branch Oswegatchie River: brook trout and brown trout.
When was West Branch Oswegatchie River last stocked?
New York State Department of Environmental Conservation last stocked West Branch Oswegatchie River in May 2024 with brook trout. Our data has 28 stocking records in the last 10 years.
Where can I launch a boat on West Branch Oswegatchie River?
The agency lists 2 carry-in launches and 1 shoreline access site for West Branch Oswegatchie River, near Bishas Mill and Fullerville. Each one is listed in the access section with parking and toilets where the agency records them.
Is there a flow gauge on West Branch Oswegatchie River?
Yes. USGS gauge 04262500 (West Branch Oswegatchie River near Harrisville NY) measures flow on West Branch Oswegatchie River. Its median daily flow runs from about 145 cfs in September to 899 cfs in April. Today's reading is in the forecast at the top of this page; the flow section has the typical range by month.
Sources: New York State DEC, Boat launch sites · New York State DEC, Public Fishing Rights parking areas (9vef-6whi), on data.ny.gov · New York State DEC, Fish stocking lists on data.ny.gov · U.S. Geological Survey, Geographic Names Information System, domestic names · U.S. Geological Survey, National Hydrography Dataset, high resolution, state geodatabases (NHDWaterbody, NHDFlowline); 3DHP when it replaces it · U.S. Geological Survey, Water Data OGC API (monitoring locations, discharge, gage height, water temperature). Checked: Oct 4, 2026. Official links open the agency page. How we use data