17.3 mapped river miles, draining 98 square miles, in the Middle Delaware Mongaup Brodhead basin watershed. 8 USGS gauges report water temperature on it, and this page reads all 8.
50°F and colder is cold, through cold-transitional and cool, to warm above 70°F — the same four bands, breaking at 58, 64 and 70°F, that the app paints. Grey is water nobody has measured.
Live from the USGS — every pill above is live, so the numbers you are reading are the latest continuous readings at each gauge. Provisional and unreviewed, as all real-time data is. If that fetch cannot happen — you are offline, or the USGS is down — the pills fall back to the last value we cached, 1 October 2026, 02:35 UTC. Not all of them, though: Basher Kill at Cuddebackville Ny is not reporting water temperature — it has sent no water temperature for 2203 days, since 15 September 2020. That pill carries a modelled temperature where one can be fitted, marked as modelled, and a dash where it cannot — never a stale reading dressed as a current one.
Each gauge carries a July mean built from its own daily record — 7 Julys, 2020–2026, measured rather than modelled. A July mean is what decides which of the four bands a stretch of water belongs to, because July is when a trout river either holds or does not.
| Reach | July mean | Band | Groundwater |
|---|---|---|---|
|
W Br Neversink R at Winnisook L Nr Frost Valley Ny RM 17.3–13.1 |
55.7 °F | cold | high |
|
Biscuit Bk above Pigeon Bk at Frost Valley Ny RM 13.1–7.9 |
63.5 °F | cold-transitional | moderate |
|
West Branch at Claryville Ny RM 7.9–2.6 |
64.8 °F | cool | moderate |
|
Claryville Ny RM 2.6–0.0 |
63.5 °F | cold-transitional | moderate |
|
Neversink Ny RM -3.6–0.0 |
48.5 °F | cold | high |
|
Bridgeville Ny RM -15.5–0.0 |
65.8 °F | cool | moderate |
|
Basher Kill at Cuddebackville Ny RM -32.1–0.0 |
63.5 °F | cold-transitional | moderate |
|
Godeffroy Ny RM -40.6–0.0 |
71.8 °F | warm | low |
Every gauge sits at the bottom of its segment, so each number is the warm end and the water above it runs colder. ±2.33 °F on the fit.
NYSDEC classifies this water as Class A — drinking water source, Class AA — drinking water source, and Class B — swimming and contact recreation. More than one class appears because the classification changes along the river. The thermal bar above shows where. On those reaches DEC also designates it trout waters — which is the half of the classification that is about temperature, and the half this map paints by. The class is a designation of best usage under 6 NYCRR — what the water is protected for — and not the season and creel rules, which change yearly and live with the agency.
NYSDEC water quality classifications and standards →
River miles are measured above the mouth, along the mapped mainstem. The reach breaks are the gauges, which is also how the temperature model divides the river.
| Reach | Miles | July mean | Access on it |
|---|---|---|---|
|
RM 17.3–13.1 down to W Br Neversink R at Winnisook L Nr Frost Valley Ny |
4.2 | 55.7 °F | 1 site — angler parking |
|
RM 13.1–7.9 down to Biscuit Bk above Pigeon Bk at Frost Valley Ny |
5.2 | 63.5 °F | — |
|
RM 7.9–2.6 down to West Branch at Claryville Ny |
5.3 | 64.8 °F | 1 site — angler parking |
|
RM 2.6–0.0 down to Claryville Ny |
6.2 | 63.5 °F | 1 site — angler parking |
|
RM -3.6–0.0 down to Neversink Ny |
11.9 | 48.5 °F | — |
|
RM -15.5–0.0 down to Bridgeville Ny |
16.5 | 65.8 °F | — |
|
RM -32.1–0.0 down to Basher Kill at Cuddebackville Ny |
8.5 | 63.5 °F | — |
|
RM -40.6–0.0 down to Godeffroy Ny |
8.5 | 71.8 °F | — |
3 mapped access sites on the mainstem: 3 walk-in, 0 boat or canoe launches. Source: NYSDEC.
Every gauge on the mainstem, upstream first. Links go to the USGS monitoring-location page for the site.
4 units of public or open-access land touch this river, 843 acres in total. Acreage is the whole unit, not the part beside the water.
| Unit | Owner | Acres |
|---|---|---|
| Neversink River — State Land, Fishing Access | NYSDEC | 372 |
| Neversink River — County Land, Fishing Access | County | 81 |
| Neversink River — Public Fishing Rights Easement | NYSDEC | 244 |
| Holiday Mountain Ski Area | local holder not recorded | 146 |
NYSDEC designates this as trout water — Trout waters — without naming the species. No fish survey or stocking record for this water is in the files this site reads.
The measured record behind every temperature band on this page: the mean of the daily means for July, at each gauge, over the years USGS has one.
| Gauge | July mean | July range | Julys |
|---|---|---|---|
| W Br Neversink R at Winnisook L Nr Frost Valley Ny | 55.7 °F | 8.5 °F | 7 |
| Biscuit Bk above Pigeon Bk at Frost Valley Ny | 63.5 °F | 20.2 °F | 8 |
| West Branch at Claryville Ny | 64.8 °F | 15.8 °F | 7 |
| Claryville Ny | 63.5 °F | 20.2 °F | 8 |
| Neversink Ny | 48.5 °F | 26.3 °F | 8 |
| Bridgeville Ny | 65.8 °F | 11.3 °F | 8 |
| Basher Kill at Cuddebackville Ny | 63.5 °F | 20.2 °F | 8 |
| Godeffroy Ny | 71.8 °F | 14.8 °F | 8 |
6 named streams meet this one. Confluence miles are above the mouth; the longest twelve are listed.
Neversink River sits in HUC 8 02040104, the Middle Delaware Mongaup Brodhead basin, and drains 98 square miles, Strahler order 5 at the mouth. 154 NHD reaches carry the name for 56.4 miles in total — more than the 17.3 miles of drawn mainstem, because NHD counts side channels and braids as their own reaches.
The closest 6 rivers on this site, straight-line from the middle of this one — not drive time.