Massachusetts River Levels & Streamflow
As of Sep 12, 2026, Massachusetts rivers are running at 79% of normal across 78 USGS gauges — the highest is 4,060 cfs on the Connecticut River At Montague City. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Massachusetts.
Streamflow levels across Massachusetts are currently 79% of normal, with the Connecticut River At Montague City reporting the highest discharge in the state at 4,060 cfs and a gauge stage of 7.79 ft.
Meanwhile, the Connecticut River At Montague City is seeing a spike today — up 135% 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 Massachusetts's named rivers.
State-wide streamflow overview
The Massachusetts flow picture in four data points -- where the state sits versus historical norms, what's flowing hardest, and what's spiking fastest.
Percent of normal
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Gauge stage 7.79 ft
Biggest 24h spike
Now 4,060 cfs
Network coverage
USGS gauges feeding 0 named rivers in Massachusetts.
Where every gauge actually sits
One dot per Massachusetts 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.
Massachusetts streamflow, three water years
Statewide percent of normal, every day since Sep 2023. The dotted line is normal.
799 daily readings from 78 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 250%: 29 readings above that — including the 440% peak in Aug 2026 — 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.
Massachusetts USGS streamgauges
Every USGS gauge Snoflo tracks in Massachusetts. Sortable, quickly filterable. Numeric columns heat-mapped from light to deep. Tap any gauge for its full hydrograph and forecast.
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Connecticut River At Montague City, Ma
1 day ago · USGS 01170500 |
4,060 cfs | 7.79 ft | · | 74°F | 111 ft | Middle Connecticut |
|
Connecticut R At Interstate 391 Bridge At Holyoke, Ma
1 day ago · USGS 01172010 |
2,120 cfs | 4.23 ft | · | 77°F | 43 ft | Middle Connecticut |
|
Merrimack River Bl Concord River At Lowell, Ma
1 day ago · USGS 01100000 |
1,420 cfs | 41.71 ft | · | 75°F | 50 ft | Merrimack |
|
Deerfield River Near West Deerfield, Ma
1 day ago · USGS 01170000 |
322 cfs | 2.16 ft | · | 74°F | 157 ft | Deerfield |
|
Chicopee River At Indian Orchard, Ma
1 day ago · USGS 01177000 |
286 cfs | 4.25 ft | · | 76°F | 126 ft | Chicopee |
|
Housatonic River Nr Ashley Falls, Ma
1 day ago · USGS 01198125 |
209 cfs | 1.69 ft | · | 73°F | 646 ft | Housatonic |
|
Deerfield River At Charlemont, Ma
1 day ago · USGS 01168500 |
191 cfs | 1.94 ft | · | 72°F | 517 ft | Deerfield |
|
Housatonic River Near Great Barrington, Ma
1 day ago · USGS 01197500 |
136 cfs | 1.82 ft | · | 72°F | 693 ft | Housatonic |
|
Westfield River Near Westfield, Ma
1 day ago · USGS 01183500 |
135 cfs | 3.01 ft | · | 77°F | 140 ft | Westfield |
|
Swift River At West Ware, Ma
1 day ago · USGS 01175500 |
119 cfs | 2.84 ft | · | 75°F | 370 ft | Chicopee |
|
Hoosic River Near Williamstown, Ma
1 day ago · USGS 01332500 |
95 cfs | 5.41 ft | · | 70°F | 618 ft | Hudson-Hoosic |
|
Millers River At Erving, Ma
1 day ago · USGS 01166500 |
94 cfs | 1.75 ft | · | 73°F | 378 ft | Miller |
|
Nashua River At East Pepperell, Ma
1 day ago · USGS 01096500 |
85 cfs | · | · | 75°F | 165 ft | Nashua |
|
Westfield River At Knightville, Ma
1 day ago · USGS 01179500 |
58 cfs | 2.76 ft | · | 74°F | 464 ft | Westfield |
|
Concord R Below R Meadow Brook, Ma
1 day ago · USGS 01099500 |
57 cfs | 3.78 ft | · | 75°F | 67 ft | Merrimack |
|
Taunton River Near Bridgewater, Ma
1 day ago · USGS 01108000 |
57 cfs | 2.98 ft | 62°F | 79°F | 10 ft | Narragansett |
|
Ware River At Gibbs Crossing, Ma
1 day ago · USGS 01173500 |
50 cfs | 2.07 ft | · | 74°F | 380 ft | Chicopee |
|
North River At Shattuckville, Ma
1 day ago · USGS 01169000 |
48 cfs | 1.53 ft | · | 72°F | 459 ft | Deerfield |
|
North Nashua River Near Leominster, Ma
1 day ago · USGS 01094500 |
44 cfs | 2.05 ft | · | 76°F | 274 ft | Nashua |
|
Hoosic River At Adams, Ma
1 day ago · USGS 01331500 |
42 cfs | 5.78 ft | · | 71°F | 831 ft | Hudson-Hoosic |
|
Quaboag River At West Brimfield, Ma
1 day ago · USGS 01176000 |
40 cfs | 2.59 ft | · | 74°F | 388 ft | Chicopee |
|
Blackstone River, Ma
1 day ago · USGS 01109730 |
39 cfs | 1.53 ft | · | 74°F | 382 ft | Blackstone |
|
Neponset River At Milton Village, Ma
1 day ago · USGS 011055566 |
30 cfs | · | · | 77°F | 5 ft | Charles |
|
West Branch Farmington River Near New Boston, Ma
1 day ago · USGS 01185500 |
28 cfs | 2.29 ft | · | 71°F | 776 ft | Farmington |
|
East Branch Housatonic River At Coltsville, Ma
1 day ago · USGS 01197000 |
27 cfs | · | · | 70°F | 996 ft | Housatonic |
|
Charles River At Dover, Ma
1 day ago · USGS 01103500 |
27 cfs | · | · | 76°F | 93 ft | Charles |
|
Charles River At Waltham, Ma
1 day ago · USGS 01104500 |
26 cfs | · | · | 77°F | 16 ft | Charles |
|
Green River At Williamstown, Ma
1 day ago · USGS 01333000 |
25 cfs | 1.67 ft | · | 71°F | 614 ft | Hudson-Hoosic |
|
Assabet River At Maynard, Ma
1 day ago · USGS 01097000 |
24 cfs | 1.36 ft | · | 76°F | 154 ft | Concord |
|
Quinebaug R Bl Westville Dam Nr Southbridge, Ma
1 day ago · USGS 01123600 |
23 cfs | 3.20 ft | · | 73°F | 513 ft | Quinebaug |
|
Charles River At Wellesley, Ma
1 day ago · USGS 01104200 |
23 cfs | 2.73 ft | · | 77°F | 67 ft | Charles |
|
West Branch Westfield River At Huntington, Ma
1 day ago · USGS 01181000 |
22 cfs | 3.05 ft | · | 75°F | 391 ft | Westfield |
|
Stony Brook At Rt 20 At Waltham, Ma
1 day ago · USGS 01104460 |
21 cfs | 5.22 ft | 71°F | 77°F | 87 ft | Charles |
|
Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma
1 day ago · USGS 01104430 |
20 cfs | 1.21 ft | 72°F | 77°F | 145 ft | Charles |
|
Millers River Near Winchendon, Ma
1 day ago · USGS 01162000 |
20 cfs | 3.90 ft | · | 72°F | 834 ft | Miller |
|
Ware River At Intake Works Near Barre, Ma
1 day ago · USGS 01173000 |
17 cfs | 3.16 ft | 69°F | 73°F | 639 ft | Chicopee |
|
Squannacook River Near West Groton, Ma
1 day ago · USGS 01096000 |
16 cfs | 1.56 ft | · | 76°F | 246 ft | Nashua |
|
Quinebaug R Bl E Brimfield Dam At Fiskdale, Ma
1 day ago · USGS 01123360 |
16 cfs | 2.21 ft | · | 73°F | 614 ft | Quinebaug |
|
North Nashua River At Fitchburg, Ma
1 day ago · USGS 01094400 |
14 cfs | 2.22 ft | · | 75°F | 399 ft | Nashua |
|
Aberjona River At Winchester, Ma
1 day ago · USGS 01102500 |
14 cfs | 7.28 ft | · | 77°F | 14 ft | Charles |
|
Green River Near Colrain, Ma
1 day ago · USGS 01170100 |
13 cfs | 2.54 ft | 63°F | 72°F | 436 ft | Deerfield |
|
Neponset River At Greenlodge St Near Canton, Ma
1 day ago · USGS 01105554 |
12 cfs | 6.23 ft | · | 77°F | 46 ft | Charles |
|
Sudbury River At Saxonville, Ma
1 day ago · USGS 01098530 |
12 cfs | 4.14 ft | · | 76°F | 116 ft | Concord |
|
Mill River At Northampton, Ma
1 day ago · USGS 01171500 |
12 cfs | 5.45 ft | · | 75°F | 205 ft | Middle Connecticut |
|
Charles River At Medway, Ma
1 day ago · USGS 01103280 |
12 cfs | · | · | 76°F | 129 ft | Charles |
|
Indian Head River At Hanover, Ma
1 day ago · USGS 01105730 |
11 cfs | 1.46 ft | · | 76°F | 8 ft | Cape Cod |
|
Quashnet River At Waquoit Village, Ma
1 day ago · USGS 011058837 |
11 cfs | 2.00 ft | · | 75°F | 3 ft | Cape Cod |
|
Green River Near Great Barrington, Ma
1 day ago · USGS 01198000 |
11 cfs | · | · | 73°F | 694 ft | Housatonic |
|
Mother Brook At Dedham, Ma
1 day ago · USGS 01104000 |
9 cfs | 80.12 ft | · | 77°F | 87 ft | Charles |
|
Jones River At Kingston, Ma
1 day ago · USGS 01105870 |
8 cfs | 2.82 ft | · | 76°F | 8 ft | Cape Cod |
|
Quinapoxet River At Canada Mills Near Holden, Ma
1 day ago · USGS 01095375 |
8 cfs | 6.37 ft | 66°F | 74°F | 569 ft | Nashua |
|
South River Near Conway, Ma
1 day ago · USGS 01169900 |
8 cfs | 1.39 ft | · | 74°F | 456 ft | Deerfield |
|
Shawsheen River Near Wilmington, Ma
1 day ago · USGS 01100600 |
8 cfs | 1.96 ft | · | 76°F | 95 ft | Merrimack |
|
Otter River At Otter River, Ma
1 day ago · USGS 01163200 |
7 cfs | · | · | 73°F | 901 ft | Miller |
|
Priest Brook Near Winchendon, Ma
1 day ago · USGS 01162500 |
7 cfs | 2.48 ft | · | 72°F | 852 ft | Miller |
|
Threemile River At North Dighton, Ma
1 day ago · USGS 01109060 |
7 cfs | 2.01 ft | · | 79°F | 12 ft | Narragansett |
|
Ware River Near Barre, Ma
1 day ago · USGS 01172500 |
6 cfs | 2.32 ft | · | 73°F | 738 ft | Chicopee |
|
East Branch Neponset River At Canton, Ma
1 day ago · USGS 01105500 |
4 cfs | · | 79°F | 77°F | 80 ft | Charles |
|
Quinsigamond River At North Grafton, Ma
1 day ago · USGS 01110000 |
4 cfs | · | · | 75°F | 349 ft | Blackstone |
|
Stillwater River Near Sterling, Ma
1 day ago · USGS 01095220 |
3 cfs | 3.85 ft | 64°F | 75°F | 403 ft | Nashua |
|
Paskamanset River Near South Dartmouth, Ma
1 day ago · USGS 01105933 |
3 cfs | 8.25 ft | · | 76°F | 29 ft | Cape Cod |
|
Neponset River At Norwood, Ma
1 day ago · USGS 01105000 |
3 cfs | 5.53 ft | · | 78°F | 51 ft | Charles |
|
West Branch Swift River Near Shutesbury, Ma
1 day ago · USGS 01174565 |
2 cfs | 1.11 ft | · | 73°F | 536 ft | Chicopee |
|
Ipswich River Near Ipswich, Ma
1 day ago · USGS 01102000 |
1 cfs | 2.29 ft | · | 74°F | 21 ft | Charles |
|
Herring River At North Harwich, Ma
1 day ago · USGS 01105880 |
1 cfs | 1.74 ft | · | 75°F | 21 ft | Cape Cod |
|
Saugus R At Saugus Iron Works At Saugus, Ma
1 day ago · USGS 01102345 |
1 cfs | · | · | 77°F | 14 ft | Charles |
|
Sevenmile River Near Spencer, Ma
1 day ago · USGS 01175670 |
1 cfs | 9.19 ft | · | 73°F | 650 ft | Chicopee |
|
Wading River Near Norton, Ma
1 day ago · USGS 01109000 |
1 cfs | 4.84 ft | · | 78°F | 63 ft | Narragansett |
|
East Branch Swift River Near Hardwick, Ma
1 day ago · USGS 01174500 |
1 cfs | 19.24 ft | · | 73°F | 520 ft | Chicopee |
|
Ipswich River At South Middleton, Ma
1 day ago · USGS 01101500 |
1 cfs | 1.74 ft | · | 75°F | 49 ft | Charles |
|
Lake Cochituate Outlet At Framingham, Ma
1 day ago · USGS 01098500 |
1 cfs | · | · | 76°F | 129 ft | Concord |
|
Nashoba Brook Near Acton, Ma
1 day ago · USGS 01097300 |
0 cfs | 3.44 ft | · | 76°F | 155 ft | Concord |
|
Parker River At Byfield, Ma
1 day ago · USGS 01101000 |
0 cfs | · | · | 74°F | 25 ft | Charles |
|
Old Swamp River Near South Weymouth, Ma
1 day ago · USGS 01105600 |
0 cfs | 2.32 ft | · | 76°F | 87 ft | Cape Cod |
|
Whitmans Pond, Ma
1 day ago · USGS 01105606 |
0 cfs | 70.93 ft | · | 77°F | 75 ft | Charles |
|
Whitmans Pond Fish Ladder At East Weymouth, Ma
1 day ago · USGS 01105608 |
0 cfs | 31.07 ft | · | 77°F | 52 ft | Charles |
|
Segreganset River Near Dighton, Ma
1 day ago · USGS 01109070 |
0 cfs | 1.55 ft | · | 79°F | 36 ft | Narragansett |
|
Stony Brook Reservoir At Dam Near Waltham, Ma
1 day ago · USGS 01104480 |
0 cfs | · | 36°F | 77°F | 62 ft | Charles |
See every Massachusetts gauge ranked against normal.
- Percentile rank & % of median for all 78 gauges
- 15-day PULSE forecast on every gauge
- Custom flow alerts & full daily history
About Massachusetts streamflow
What are river levels like in Massachusetts right now?
As of September 12, 2026, Massachusetts rivers are running at 79% of normal across 78 USGS streamgauges, and the Connecticut River At Montague City is reporting the highest discharge at 4,060 cfs. The full sortable gauge table is below.
Which Massachusetts river is running highest right now?
As of September 12, 2026, the highest discharge in Massachusetts is 4,060 cfs on the Connecticut River At Montague City. See the sortable gauge table for the full statewide ranking.
Are Massachusetts rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means Massachusetts 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 Massachusetts 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 Massachusetts 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 Massachusetts 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.
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