Presumpscot River At Westbrook flow report
As of July 13, 2026, Presumpscot River At Westbrook is flowing at -999,999 cfs with a gage height of 4.74 ft, receding 537733% over the past 24 hours. Source: USGS gauge #01064118, refreshed throughout the day.
Historical Data
Presumpscot River At Westbrook at a glance
How Presumpscot River At Westbrook is running right now, where it sits on the map, and the key gauge stats.
Presumpscot River At Westbrook is flowing at -999,999 cfs, with the water sitting 4.74 ft at the gage. Flow is down 537733% since yesterday as the gauge recedes.
This is USGS gauge #01064118 in Maine.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Maine flow report.
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.
Presumpscot River At Westbrook
The river is fed by numerous tributaries and is regulated by several dams, including the Saccarappa Dam in Westbrook. Seasonal trends show peak flows in the spring due to snowmelt and lower flows in the summer and fall. The hydrology of the river is interesting because it supports a diverse range of fish species, including Atlantic salmon, and is also home to the iconic Sappi paper mill, which uses the river's water for industrial purposes.
Nearby streamflow levels
Cross-check Presumpscot River At Westbrook's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Presumpscot River At Westbrook | — |
| Androscoggin River Near Auburn | 2,100 cfs |
| Saco River At Cornish | 1,120 cfs |
| Mousam River Near West Kennebunk | 38 cfs |
| Nezinscot River At Turner Center | 43 cfs |
| Little Androscoggin River Near South Paris | 16 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Presumpscot River At Westbrook. 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 |
|---|---|
| Nohrsc Portland 5.4 Nw | 0 in |
| Portland 5.5 Wnw | 0 in |
| Nohrsc Portland 4.3 W | 0 in |
| Residual Office To Portland Wsfo (Gyx) | 0 in |
| South Portland 1.6 S | 0 in |
| Gray 2.9 Sse | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Presumpscot River At Westbrook.
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 Presumpscot River At Westbrook in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Presumpscot River At Westbrook crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Presumpscot River At Westbrook
Where does the streamflow data for Presumpscot River At Westbrook come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01064118. 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 Presumpscot River At Westbrook 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 Presumpscot River At Westbrook report
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