Androscoggin River At Errol flow report
As of July 14, 2026, Androscoggin River At Errol is flowing at 1,780 cfs with a gage height of 2.47 ft. Source: USGS gauge #01053500, refreshed throughout the day.
Historical Data
Androscoggin River At Errol at a glance
How Androscoggin River At Errol is running right now, where it sits on the map, and the key gauge stats.
Androscoggin River At Errol is flowing at 1,780 cfs, with the water sitting 2.47 ft at the gage.
This is USGS gauge #01053500 in New Hampshire. Over the past 10 days the average has been 1,774 cfs, peaking at 2,400 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the New Hampshire flow report.
Streamflow Forecast
Over the next 5 days, Androscoggin River At Errol is expected to hold near today's 1780 cfs, toward roughly 1731 cfs by 2026-07-18 (likely range 1253-2390 cfs) -- drier than normal for the date.
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.
Androscoggin River At Errol
The major flow contributors to the river include the Magalloway River and the Dead Diamond River. The Errol Dam located upstream of the gauge has a significant influence on the flow of the river. The river flow is generally low during the summer months and increases during the spring due to snowmelt. The Androscoggin River at Errol, NH is known for its strong currents and varied aquatic life, including rainbow trout and salmon. The river has a rich history of logging and paper production, which has had significant impacts on the hydrology and ecology of the river.
Nearby streamflow levels
Cross-check Androscoggin River At Errol's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Androscoggin River At Errol | 1,780 cfs |
| Diamond River Near Wentworth Location | 48 cfs |
| Upper Ammonoosuc River Near Groveton | 190 cfs |
| Ellis River At South Andover | 43 cfs |
| Connecticut R Below Indian Stream Nr Pittsburg | 324 cfs |
| Androscoggin River Near Gorham | 1,880 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Androscoggin River At Errol. 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 |
|---|---|
| Colebrook 3sw | 0 in |
| Berlin | 0 in |
| Northumberland | 0 in |
| Rangeley 2nw | 0 in |
| Rangeley | 0 in |
| Nohrsc Lancaster 0.5 N | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Androscoggin River At Errol.
Boat launches
See all →
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 Androscoggin River At Errol in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Androscoggin River At Errol crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Androscoggin River At Errol
Where does the streamflow data for Androscoggin River At Errol come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01053500. 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 Androscoggin River At Errol 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 Androscoggin River At Errol report
Create your free account to track this river — and everything else you love on the water.
- Flow alerts — get pinged the moment this river hits your range
- Save favorites — every river, lake & snowpack in one place
- Full history & forecasts — plus the free iPhone app