East Branch of the Ausable River at Au Sable Forks
New York — Water Level & Flood Stage
Located in Essex County, New York on the East Branch of the Ausable River. Live water level data from USGS gauge 04275000, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
11 ft
Moderate Flood
9 ft
Minor Flood
7 ft
Action Stage
6 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
18 ft
Record flooding will occur throughout the Ausable valley with numerous homes and businesses flooded or becoming isolated by high water. Large sections of Routes 9N and 73 will flood and become impassable. Ausable Village may become isolated with large areas of the town flooded, such as Main Street, the Main Street bridge and the Jersey bridge. Safe access to many homes and businesses will be blocked by high water.
15 ft
Severe flooding will be seen throughout much of the Ausable Valley from Keene to Jay, downstream through Ausable Village and Keeseville. Numerous sections of Routes 9n and 73 will flood with some homes and businesses becoming isolated by high water, similar to the flood of November 1996. In Ausable Village, Grove Road, School Street, Intervale Avenue, and homes in the Jersey area will flood. In Keeseville, the wastewater treatment plant and several homes and businesses along Route 9 will flood.
13 ft
Major flooding will occur in many portions of the Ausable Valley. In Ausable Village, homes in the Jersey area and other lowland areas will likely flood. Several feet of water will cover Intervale Avenue, and portions of Grove Road and School Street may experience high water. Sections of Routes 9N and 73 will flood. In Keeseville, the wastewater treatment plant, as well as homes and businesses along Route 9 will likely flood. This stage is equivalent to the FEMA 1 Percent Annual Chance Flood.
11 ft
Major flooding will likely occur in portions of the Ausable River valley. In Ausable Village, homes in the Jersey area including Intervale Avenue will flood. Water will cover Route 9N near Stickney Bridge including Clark Lane and Carey Road. Water will approach Route 9N near Stone House Road. In Keeseville, the wastewater treatment plant and businesses along Route 9 may flood. In Keene, water will cover Hulls Falls Road, Routes 73 and 9N near Marcy field. The Keene business district may also flood.
10 ft
Parkland and adjacent parking lots will flood in Ausable Forks. In Jay, portions of Route 9N near Stickney Bridge will flood. Water will back up onto Clark Lane and Carey Road. Downstream in Keeseville, water will approach businesses along north Ausable Street, as well as the Keeseville wastewater treatment plant. Upstream in Keene, water will cover Hulls Falls Road and Routes 73 and 9N near Marcy Field.
9 ft
In Jay, water will approach Route 9N in the Stickney Bridge area. In Keene, water will cover Hulls Falls Road, and Routes 73 and 9N near Marcy Field.
8 ft
In Jay, water will cover Route 9N near Trumbulls Corner. Minor flooding can occur in Keene. Water begins to overflow onto Hulls Falls Road, Route 73, and Route 9N near Marcy Field. High water will impact interests at Alice Falls near Keeseville.
7 ft
Minor flooding can occur in Keene. Water begins to overflow onto Hulls Falls Road, Route 73, and Route 9N near Marcy Field. High water will impact interests at Alice Falls near Keeseville.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Aug 28, 2011 | 18.51 ft | 33,500 cfs |
| Aug 28, 2011 | 18.51 ft | 33,500 cfs |
| Feb 18, 2022 | 15.82 ft | — |
| Feb 18, 2022 | 15.82 ft | — |
| Nov 8, 1996 | 15.22 ft | 23,900 cfs |
About This Gauge
USGS Site
NWS LID
ASFN6
River
East Branch of the Ausable River
County
Essex, NY
Coordinates
44.4375°N, 73.6811°W
Get Flood Alerts for East Branch of the Ausable River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of East Branch of the Ausable River at Au Sable Forks?
The East Branch of the Ausable River at Au Sable Forks gauge is maintained by USGS (site 04275000) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for East Branch of the Ausable River at Au Sable Forks?
The NWS-defined flood stage for East Branch of the Ausable River at Au Sable Forks is 7 feet. Action stage begins at 6 feet. Moderate flooding starts at 9 feet, and major flooding at 11 feet.
How do I get alerts when East Branch of the Ausable River rises?
Download StormCast free on Google Play, go to River Gauges, and add East Branch of the Ausable River at Au Sable Forks to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the East Branch of the Ausable River at Au Sable Forks gauge located?
The gauge is located in Essex County, New York at coordinates 44.4375°N, 73.6811°W. USGS site number: 04275000. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.