BirdTrout
Unadilla River, New York
22 mapped river miles, draining 52 square miles, in the Upper Susquehanna basin watershed. No gauge stands in it; the nearest is 25.8 miles away, and what this page knows about its temperature is NYSDEC's classification of the water itself.
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.
The nearest live reading
The nearest gauge is 37.2 miles away, at West Branch Delaware River At Walton Ny — not a reading of this water, but of what the region is doing today. A closer gauge has stopped reporting — it has sent no water temperature for 334 days, since 29 October 2025, so no number here comes from it.
Thermal classification
NYSDEC's classification of this water, reach by reach. A class, not a temperature — no July mean, because none was measured here.
| Reach | Typed miles | Band | NYSDEC type |
|---|---|---|---|
| RM 22.0–22.0 | 20.8 | cold | — |
NYSDEC has classified 20.8 of the 72 miles NHD carries for this stream — 29% of it. Every typed reach carries the same class, cold. The untyped reaches are not warm water — they are water NYSDEC's inventory does not reach, and the mile ranges above span only the reaches it does.
Questions about this river
- Unadilla River fishing report — what it reads right now
- How to get to the Unadilla River — access, parking and public land
- Unadilla River fishing regulations — season, size and gear by reach
NYSDEC classification
NYSDEC classifies this water as Class B — swimming and contact recreation and Class C — fishing. 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 spawning waters, 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 →
Access
2 mapped NYSDEC access sites within a quarter mile of the water, upstream first: Unadilla River At New Berlin (RM 3.9), Unadilla River At New Berlin (RM 1.7). 2 walk-in, 0 boat or canoe launches.
Public land on the river
3 units of public or open-access land touch this river, 335 acres in total. Acreage is the whole unit, not the part beside the water.
| Unit | Owner | Acres |
|---|---|---|
| Unadilla River — Public Fishing Rights Easement | NYSDEC | 38 |
| Wharton Creek — Public Fishing Rights Easement | NYSDEC | 296 |
| Unadilla River Fishing Access | state conservation department | 1 |
Species
NYSDEC designates this as trout water — Trout spawning waters, Trout waters — without naming the species. No fish survey or stocking record for this water is in the files this site reads.
Tributaries and watershed
5 named streams meet this one. Confluence miles are above the mouth; the longest twelve are listed.
- Wharton Creek 45.5 mi · RM 12.3
- Beaver Creek 19.9 mi · RM 22.0
- Center Brook 18.4 mi · RM 15.0
- Great Brook 13.0 mi · RM 0.0
- Tallette Creek 10.4 mi · RM 21.5
Unadilla River sits in HUC 8 02050101, the Upper Susquehanna basin, and drains 52 square miles, Strahler order 4 at the mouth. 152 NHD reaches carry the name for 71.7 miles in total — more than the 22.0 miles of drawn mainstem, because NHD counts side channels and braids as their own reaches.
Other water nearby
The closest 6 rivers on this site, straight-line from the middle of this one — not drive time.