Hudson River At Green Island flow report
As of July 14, 2026, Hudson River At Green Island is flowing at 4,160 cfs with a gage height of 16.59 ft, receding 24% over the past 24 hours. Source: USGS gauge #01358000, refreshed throughout the day.
Historical Data
Hudson River At Green Island at a glance
How Hudson River At Green Island is running right now, where it sits on the map, and the key gauge stats.
Hudson River At Green Island is flowing at 4,160 cfs, with the water sitting 16.59 ft at the gage. Flow is down 24% since yesterday as the gauge recedes.
This is USGS gauge #01358000 in New York. Over the past 10 days the average has been 7,343 cfs, peaking at 9,270 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the New York flow report.
Streamflow Forecast
Over the next 5 days, Hudson River At Green Island Ny is expected to hold near today's 4160 cfs, toward roughly 3775 cfs by 2026-07-19 (likely range 1556-9159 cfs) -- running well below the seasonal normal.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Hudson River At Green Island
The primary flow providers are precipitation and snowmelt, with occasional contributions from tributaries such as the Mohawk River. The presence of several dams upstream can impact the flow rate at Green Island. Seasonal trends include higher flows in the spring due to snowmelt and lower flows in the summer and fall. Interestingly, the Hudson River at Green Island is affected by tidal influences, with a tide range of over two feet. Additionally, the river serves as an important transportation route and has played a significant role in the history of the region.
Nearby streamflow levels
Cross-check Hudson River At Green Island's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Hudson River At Green Island Ny | 4,160 cfs |
| Mohawk River At Cohoes Ny | 972 cfs |
| Hudson River At Lock 1 Near Waterford Ny | 8,410 cfs |
| Hudson R Above Lock 1 Nr Waterford Ny | 2,310 cfs |
| Normans Kill At Albany Ny | 30 cfs |
| Valatie Kill Near Nassau Ny | 15 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Hudson River At Green Island. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Albany Intl Ap | 0 in |
| Albany 0.7 Sw | 0 in |
| Averill Park 0.9 Wnw | 0 in |
| Nohrsc Altamont 0.4 Se | 0 in |
| Buskirk | 0 in |
| Alcove Dam | 2 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Hudson River At Green Island.
Boat launches
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River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Hudson River At Green Island in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Hudson River At Green Island crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Hudson River At Green Island
Where does the streamflow data for Hudson River At Green Island come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01358000. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Hudson River At Green Island rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Hudson River At Green Island report
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