Maine River Levels & Streamflow
As of Oct 21, 2026, Maine rivers are running at 44% of normal across 45 USGS gauges — the highest is 3,200 cfs on the St. John River Below Fish R. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Maine.
Maine river map
See Maine’s rivers on a live map
Every gauge, river and reservoir, one tap each:
- Rivers now — which are running high or low
- Reservoirs — how full each one is vs normal
- Rain — past 24 hrs and the 72-hr forecast, press play
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Maine river conditions today
Where rivers are running versus normal, what’s spiking and what’s coming — refreshed daily from USGS and NOAA.
Streamflow levels across Maine are currently 44% of normal, with the St. John River Below Fish R reporting the highest discharge in the state at 3,200 cfs and a gauge stage of 4.42 ft.
Meanwhile, the Saco River At Cornish is seeing a spike today — up 1% since yesterday and currently running near peak.
Tap any gauge below for the full hydrograph, paired weather forecast, and historical context. Use the rivers panel to jump into Maine's named rivers.
How Maine’s rivers compare to normal
Every gauge placed by its own percent of normal, and three years of the statewide trend.
Where every gauge actually sits
One dot per Maine streamgauge, placed by its own percent of normal. The state average is a single line through all of it.
Percent of normal compares today's discharge with the historical average for this calendar day. Tap any dot to open that gauge.
Maine streamflow, three water years
Statewide percent of normal, every day since Oct 2023. The dotted line is normal.
799 daily readings from 45 reporting gauges. Percent of normal is today's statewide discharge against the historical average for the same calendar day — 100% is normal, not "good". The axis tops out at 175%: 9 readings above that — including the 428% peak in Dec 2023 — are drawn along the top edge, so a few flood days cannot flatten three years of everything else. The line breaks in 2 places where the record skips more than five days — those are gaps in reporting, not readings of zero.
Maine flow report
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Penobscot River At West Enfield, Me
8 hours ago · USGS 01034500 |
2,820 cfs | 1.36 ft | · | 55°F | 125 ft | Lower Penobscot |
|
St. John River Below Fish R, Me
8 hours ago · USGS 01014000 |
2,590 cfs | 4.21 ft | · | 52°F | 495 ft | Fish |
|
Kennebec River At North Sidney, Me
8 hours ago · USGS 01049265 |
2,550 cfs | 5.61 ft | · | 55°F | 20 ft | Lower Kennebec |
|
Androscoggin River Near Auburn, Me
8 hours ago · USGS 01059000 |
2,060 cfs | 2.42 ft | · | 54°F | 114 ft | Lower Androscoggin |
|
Androscoggin River At Rumford, Me
7 hours ago · USGS 01054500 |
1,810 cfs | 3.49 ft | · | 56°F | 426 ft | Lower Androscoggin |
|
Kennebec River At Bingham, Me
8 hours ago · USGS 01046500 |
1,610 cfs | 7.33 ft | · | 54°F | 335 ft | Lower Kennebec |
|
St. John River At Dickey, Me
7 hours ago · USGS 01010500 |
1,460 cfs | 4.67 ft | · | 53°F | 597 ft | Upper St. John |
|
Saco River At Cornish, Me
8 hours ago · USGS 01066000 |
1,340 cfs | 3.17 ft | · | 55°F | 320 ft | Saco |
|
St. John River At Ninemile Bridge, Me
8 hours ago · USGS 01010000 |
843 cfs | 1.81 ft | · | 52°F | 933 ft | Upper St. John |
|
St. Croix River At Baring, Me
7 hours ago · USGS 01021000 |
719 cfs | 4.39 ft | · | 56°F | 72 ft | · |
|
St. Croix River At Vanceboro, Me
7 hours ago · USGS 01018500 |
524 cfs | 4.66 ft | · | · | 364 ft | · |
|
Piscataquis River At Medford, Me
8 hours ago · USGS 01034000 |
498 cfs | 2.12 ft | · | 54°F | 278 ft | Piscataquis |
|
Kennebec River At The Forks, Me
7 hours ago · USGS 01042500 |
474 cfs | 1.96 ft | · | 55°F | 581 ft | Dead |
|
Allagash River Near Allagash, Me
8 hours ago · USGS 01011000 |
451 cfs | 2.25 ft | 57°F | 53°F | 611 ft | Allagash |
|
East Branch Penobscot River At Grindstone, Me
8 hours ago · USGS 01029500 |
369 cfs | 4.53 ft | · | 53°F | 353 ft | East Branch Penobscot |
|
Aroostook River At Washburn, Me
7 hours ago · USGS 01017000 |
364 cfs | 1.27 ft | · | 52°F | 446 ft | Aroostook |
|
Dead River Near Dead River, Me
7 hours ago · USGS 01043500 |
357 cfs | 3.77 ft | · | 54°F | 1,060 ft | Dead |
|
Aroostook River Near Masardis, Me
8 hours ago · USGS 01015800 |
167 cfs | 2.67 ft | · | 53°F | 542 ft | Aroostook |
|
Sandy River Near Mercer, Me
7 hours ago · USGS 01048000 |
164 cfs | 3.04 ft | · | 54°F | 190 ft | Lower Kennebec |
|
North Branch Penobscot River Nr Pittston Farm, Me
8 hours ago · USGS 01027200 |
151 cfs | 4.39 ft | · | 52°F | 1,134 ft | West Branch Penobscot |
|
Carrabassett River Near North Anson, Me
7 hours ago · USGS 01047000 |
130 cfs | 3.00 ft | · | 55°F | 306 ft | Lower Kennebec |
|
Spencer Stream At Mouth, Me
8 hours ago · USGS 01044550 |
121 cfs | 2.80 ft | · | 54°F | 1,056 ft | Dead |
|
Narraguagus River At Cherryfield, Me
7 hours ago · USGS 01022500 |
121 cfs | 7.87 ft | 43°F | 55°F | 57 ft | Maine Coastal |
|
Grand Lake Stream At Grand Lake Stream, Me
7 hours ago · USGS 01019000 |
118 cfs | 1.78 ft | · | 54°F | 313 ft | St. Croix |
|
Fish River Near Fort Kent, Me
8 hours ago · USGS 01013500 |
116 cfs | 2.96 ft | · | 52°F | 520 ft | Fish |
|
Mousam River Near West Kennebunk, Me
8 hours ago · USGS 01069500 |
99 cfs | 1.08 ft | · | 54°F | 224 ft | Piscataqua-Salmon Falls |
|
Mattawamkeag River Near Mattawamkeag, Me
8 hours ago · USGS 01030500 |
98 cfs | 3.80 ft | · | 53°F | 207 ft | Mattawamkeag |
|
Big Black River Near Depot Mtn, Me
8 hours ago · USGS 01010070 |
79 cfs | 3.58 ft | · | 51°F | 901 ft | Upper St. John |
|
Piscataquis River Near Dover-Foxcroft, Me
8 hours ago · USGS 01031500 |
72 cfs | 1.90 ft | 32°F | 55°F | 360 ft | Piscataquis |
|
Ellis River At South Andover, Me
8 hours ago · USGS 01054300 |
67 cfs | 5.10 ft | · | 56°F | 684 ft | Lower Androscoggin |
|
Austin Stream At Bingham, Me
8 hours ago · USGS 01046000 |
46 cfs | 3.65 ft | · | 55°F | 361 ft | Lower Kennebec |
|
Wild River At Gilead, Me
7 hours ago · USGS 01054200 |
41 cfs | 1.43 ft | 33°F | 56°F | 722 ft | Lower Androscoggin |
|
Swift River Near Roxbury, Me
8 hours ago · USGS 01055000 |
35 cfs | 1.29 ft | · | 55°F | 619 ft | Lower Androscoggin |
|
Kingsbury Stream At Abbot Village, Me
8 hours ago · USGS 01031450 |
29 cfs | 5.91 ft | · | 55°F | 434 ft | Piscataquis |
|
Piscataquis River At Blanchard, Me
8 hours ago · USGS 01031300 |
26 cfs | 3.69 ft | · | 54°F | 592 ft | Piscataquis |
|
Kenduskeag Stream Near Bangor, Me
8 hours ago · USGS 01037000 |
24 cfs | 2.96 ft | · | 56°F | 74 ft | Lower Penobscot |
|
Little Androscoggin River Near South Paris, Me
8 hours ago · USGS 01057000 |
24 cfs | 2.34 ft | · | 52°F | 476 ft | Lower Androscoggin |
|
Sheepscot River At North Whitefield, Me
8 hours ago · USGS 01038000 |
19 cfs | 1.75 ft | 35°F | 56°F | 126 ft | St. George-Sheepscot |
|
Seboeis River Near Shin Pond, Me
7 hours ago · USGS 01029200 |
15 cfs | 4.30 ft | · | 53°F | 553 ft | East Branch Penobscot |
|
Old Stream Near Wesley, Me
8 hours ago · USGS 01021480 |
10 cfs | 3.78 ft | · | 54°F | 190 ft | Maine Coastal |
|
Cobbosseecontee Stream At Gardiner, Me
8 hours ago · USGS 01049500 |
8 cfs | 2.06 ft | · | 55°F | 46 ft | Lower Kennebec |
|
Libby Brook Near Northfield, Me
8 hours ago · USGS 01021470 |
8 cfs | 1.69 ft | · | 55°F | 149 ft | Maine Coastal |
|
Meduxnekeag R Above S Br Medux. R Nr Houlton, Me
8 hours ago · USGS 01017960 |
8 cfs | 2.30 ft | · | 54°F | 404 ft | Meduxnekeag |
|
Williams Brook At Phair, Me
8 hours ago · USGS 01017550 |
1 cfs | 1.31 ft | · | 52°F | 582 ft | Meduxnekeag |
|
Ducktrap River Near Lincolnville, Me
8 hours ago · USGS 01037380 |
0 cfs | 1.31 ft | 33°F | 55°F | 135 ft | Maine Coastal |
Maine river runs
Paddleable river sections in Maine keyed to USGS gauges, with live streamflow and whitewater class.
| River run | Status | Streamflow | Air temp | Class |
|---|---|---|---|---|
| Kennebec Gorge | · | · | 45°F | III TO IV+ |
About Maine streamflow
What are river levels like in Maine right now?
As of October 21, 2026, Maine rivers are running at 44% of normal across 45 USGS streamgauges, and the St. John River Below Fish R is reporting the highest discharge at 3,200 cfs. The full sortable gauge table is below.
Which Maine river is running highest right now?
As of October 21, 2026, the highest discharge in Maine is 3,200 cfs on the St. John River Below Fish R. See the sortable gauge table for the full statewide ranking.
Are Maine rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means Maine rivers are running higher than the seasonal average for the date, below 100% means lower (a dry spell or drought). Each gauge also shows its own percent of median.
Where does the Maine streamflow data come from?
The U.S. Geological Survey National Water Information System. USGS streamgauges report continuously (every 15 minutes) and the data is the canonical real-time record for U.S. rivers. Snoflo pulls the latest readings and joins them to a 7-day NOAA weather forecast for each station.
What is cfs?
Cubic feet per second — the standard unit for streamflow. One cfs is about 7.5 gallons per second. Small creeks run at single-digit cfs; the Mississippi at hundreds of thousands.
What does Gauge Height mean?
The water level at the gauge in feet above the reference datum. Used together with discharge to track river state. Flood stage and runnable levels are typically expressed in gauge height (e.g., "flood at 16 ft").
How fresh is the Maine data?
USGS streamgauges report every 15 minutes; Snoflo re-pulls throughout the day. The AI briefing regenerates daily.
Can I get a flow alert for a Maine gauge?
Yes. Save any USGS gauge as a favorite in the Snoflo iOS app, set a discharge or stage threshold (e.g. "alert me when discharge crosses 2,000 cfs"), and you'll get a push the moment it crosses.
Is this a substitute for an NWS flood warning?
No. Snoflo is informational. For flood life-safety decisions always follow guidance from your local NWS forecast office and state emergency management. Snoflo data is one input among several.