BirdTrout
Hudson River, New York
14.2 mapped river miles, draining 1,657 square miles, in the Upper Hudson basin watershed. 4 USGS gauges report water temperature on it, and this page reads all 4.
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.
Water temperature right now
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: Green Island Ny, Port of Albany Ny, and Schodack Landing Ny are not reporting water temperature. Those pills carry 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.
Thermal classification
Each gauge carries a July mean built from its own daily record — 8 Julys, 2019–2026, 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 |
|---|---|---|---|
|
Green Island Ny RM 14.2–0.0 |
78.9 °F | warm | low |
|
Albany Ny RM -143.8–0.0 |
78.9 °F | warm | low |
|
Port of Albany Ny RM -146.8–0.0 |
78.6 °F | warm | low |
|
Schodack Landing Ny RM -153.0–0.0 |
78.0 °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.
Questions about this river
- Hudson River fishing report — what it reads right now
- When to fish the Hudson River — hatches, seasons and temperature
- How to get to the Hudson River — access, parking and public land
- Hudson River fishing regulations — season, size and gear by reach
NYSDEC classification
NYSDEC classifies this water as Class AA — drinking water source 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 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 →
Fishable reaches
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 14.2–0.0 down to Green Island Ny |
158.0 | 78.9 °F | 4 sites — at Johnsburg and 3 more |
|
RM -143.8–0.0 down to Albany Ny |
3.1 | 78.9 °F | — |
|
RM -146.8–0.0 down to Port of Albany Ny |
6.1 | 78.6 °F | — |
|
RM -153.0–0.0 down to Schodack Landing Ny |
46.0 | 78.0 °F | — |
4 mapped access sites on the mainstem: 4 walk-in, 0 boat or canoe launches. Source: NYSDEC.
USGS gauges
Every gauge on the mainstem, upstream first. Links go to the USGS monitoring-location page for the site.
-
Hudson River at Green Island Ny
— 01358000 · RM 0.0
247 July days of record across 8 Julys (2019–2026) · 8,020 cfs at last read -
Hudson River at Albany Ny
— 01359139 · RM 0.0
247 July days of record across 8 Julys (2019–2026) -
Hudson River at Port of Albany Ny
— 01359165 · RM 0.0
211 July days of record across 7 Julys (2019–2025) -
Hudson River near Schodack Landing Ny
— 0135980207 · RM 0.0
182 July days of record across 7 Julys (2019–2025)
Public land on the river
8 units of public or open-access land touch this river, 306,794 acres in total. Acreage is the whole unit, not the part beside the water.
| Unit | Owner | Acres |
|---|---|---|
| Hudson River Ice Meadows Preserve | land trust or conservancy | 201 |
| Vanderwhacker Mountain Wild Forest | state conservation department | 99,350 |
| Hudson River — Public Fishing Rights Easement | NYSDEC | 34 |
| Hudson River — State Land, Fishing Access | NYSDEC | 571 |
| State Conservation Area | state conservation department | 5,959 |
| Lake George Wild Forest | state conservation department | 71,072 |
| Kellogg - North Creek Mining And Forestry | local holder not recorded | 1 |
| Wilcox Lake Wild Forest | state conservation department | 129,607 |
Species
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.
Historical July mean
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 |
|---|---|---|---|
| Green Island Ny | 78.9 °F | 13.0 °F | 8 |
| Albany Ny | 78.9 °F | 13.0 °F | 8 |
| Port of Albany Ny | 78.6 °F | 13.7 °F | 7 |
| Schodack Landing Ny | 78.0 °F | 14.6 °F | 7 |
Tributaries and watershed
4 named streams meet this one. Confluence miles are above the mouth; the longest twelve are listed.
- North Creek 6.8 mi · RM 9.6
- Balm of Gilead Brook 4.4 mi · RM 14.2
- Collins Brook 2.7 mi · RM 8.4
- Raymond Brook 2.7 mi · RM 11.6
Hudson River sits in HUC 8 02020001, the Upper Hudson basin, and drains 1,657 square miles, Strahler order 7 at the mouth. 314 NHD reaches carry the name for 90.7 miles in total — more than the 14.2 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.