Ausable River Near Au Sable Forks flow report
As of July 13, 2026, Ausable River Near Au Sable Forks is flowing at 230 cfs with a gage height of 1.31 ft, holding steady over the past 24 hours. Source: USGS gauge #04275500, refreshed throughout the day.
Historical Data
Ausable River Near Au Sable Forks at a glance
How Ausable River Near Au Sable Forks is running right now, where it sits on the map, and the key gauge stats.
Ausable River Near Au Sable Forks is flowing at 230 cfs, with the water sitting 1.31 ft at the gage. Flow has held roughly steady over the past 24 hours.
This is USGS gauge #04275500 in New York. Over the past 10 days the average has been 307 cfs, peaking at 491 cfs.
Over the next 5 days, Ausable River Near Au Sable Forks Ny is expected to recede from today's 230 cfs, toward roughly 200 cfs by 2026-07-18 (likely range 105-381 cfs) -- running well below the seasonal normal.
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
Powered by PULSE — Snoflo’s Predictive Unified Learning & Simulation Engine, which learns from how this river has answered every past storm, snowmelt, and dry spell to forecast where it’s headed with a precision generic models can’t match.
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.
Ausable River Near Au Sable Forks
It is primarily fed by several smaller streams and its flow is regulated by several dams. Seasonal trends show the river to be at its highest flows in the spring due to snowmelt and lowest in the late fall and winter. The river also experiences flash flooding during heavy rains. Notably, the Ausable River is home to the famous Ausable Wulff dry fly, invented by fly fisherman Lee Wulff in the 1930s. Additionally, the river has been a subject of numerous paintings and photographs due to its scenic beauty.
Nearby streamflow levels
Cross-check Ausable River Near Au Sable Forks's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Ausable River Near Au Sable Forks Ny | 230 cfs |
| E Br Ausable River At Au Sable Forks Ny | 69 cfs |
| Little Ausable River Near Valcour Ny | 12 cfs |
| Bouquet River At Willsboro Ny | 75 cfs |
| Salmon River At South Plattsburgh Ny | 18 cfs |
| Saranac River At Plattsburgh Ny | 510 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Ausable River Near Au Sable Forks. 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 |
|---|---|
| Wilmington 2w | 0 in |
| Nohrsc Saranac 0.8 Sse | 0 in |
| Lake Placid 2 S | 0 in |
| Bloomingdale 0.2 Nw | 25 in |
| Nohrsc Saranac Lake 6.2 N | 0 in |
| Huntington 1.1 E | 0 in |
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 Ausable River Near Au Sable Forks in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Ausable River Near Au Sable Forks crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Ausable River Near Au Sable Forks
Where does the streamflow data for Ausable River Near Au Sable Forks come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 04275500. 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 Ausable River Near Au Sable Forks 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 Ausable River Near Au Sable Forks report
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