Massachusetts River Levels & Streamflow
As of Sep 6, 2026, Massachusetts rivers are running at 74% of normal across 78 USGS gauges — the highest is 3,260 cfs on the Connecticut R At Interstate 391 Bridge At Holyoke. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Massachusetts.
Streamflow levels across Massachusetts are currently 74% of normal, with the Connecticut R At Interstate 391 Bridge At Holyoke reporting the highest discharge in the state at 3,260 cfs and a gauge stage of 4.75 ft.
Meanwhile, the Connecticut R At Interstate 391 Bridge At Holyoke is seeing a spike today — up 36% 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.
Active weather warnings for Massachusetts
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 4.75 ft
Biggest 24h spike
Now 3,260 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 R At Interstate 391 Bridge At Holyoke, Ma
4 hours ago · USGS 01172010 |
3,350 cfs | 4.79 ft | · | 56°F | 43 ft | Middle Connecticut |
|
Connecticut River At Montague City, Ma
4 hours ago · USGS 01170500 |
3,290 cfs | 7.32 ft | · | 55°F | 111 ft | Middle Connecticut |
|
Merrimack River Bl Concord River At Lowell, Ma
4 hours ago · USGS 01100000 |
1,210 cfs | 41.56 ft | · | 54°F | 50 ft | Merrimack |
|
Deerfield River Near West Deerfield, Ma
4 hours ago · USGS 01170000 |
522 cfs | 2.46 ft | · | 55°F | 157 ft | Deerfield |
|
Chicopee River At Indian Orchard, Ma
5 hours ago · USGS 01177000 |
356 cfs | 4.40 ft | · | 55°F | 126 ft | Chicopee |
|
Housatonic River Nr Ashley Falls, Ma
4 hours ago · USGS 01198125 |
299 cfs | 2.14 ft | · | 55°F | 646 ft | Housatonic |
|
Deerfield River At Charlemont, Ma
4 hours ago · USGS 01168500 |
203 cfs | 1.97 ft | · | 51°F | 517 ft | Deerfield |
|
Westfield River Near Westfield, Ma
4 hours ago · USGS 01183500 |
181 cfs | 3.27 ft | · | 55°F | 140 ft | Westfield |
|
Housatonic River Near Great Barrington, Ma
4 hours ago · USGS 01197500 |
151 cfs | 1.87 ft | · | 55°F | 693 ft | Housatonic |
|
Swift River At West Ware, Ma
4 hours ago · USGS 01175500 |
119 cfs | 2.84 ft | · | 53°F | 370 ft | Chicopee |
|
Nashua River At East Pepperell, Ma
4 hours ago · USGS 01096500 |
101 cfs | · | · | 52°F | 165 ft | Nashua |
|
Millers River At Erving, Ma
5 hours ago · USGS 01166500 |
79 cfs | 1.66 ft | · | 54°F | 378 ft | Miller |
|
North Nashua River Near Leominster, Ma
4 hours ago · USGS 01094500 |
69 cfs | 2.26 ft | · | 53°F | 274 ft | Nashua |
|
Hoosic River Near Williamstown, Ma
5 hours ago · USGS 01332500 |
68 cfs | 5.33 ft | · | 53°F | 618 ft | Hudson-Hoosic |
|
Westfield River At Knightville, Ma
4 hours ago · USGS 01179500 |
66 cfs | 2.81 ft | · | 52°F | 464 ft | Westfield |
|
Taunton River Near Bridgewater, Ma
4 hours ago · USGS 01108000 |
65 cfs | 3.06 ft | 62°F | 70°F | 10 ft | Narragansett |
|
Concord R Below R Meadow Brook, Ma
4 hours ago · USGS 01099500 |
64 cfs | 3.82 ft | · | 54°F | 67 ft | Merrimack |
|
Blackstone River, Ma
4 hours ago · USGS 01109730 |
60 cfs | 1.74 ft | · | 54°F | 382 ft | Blackstone |
|
Ware River At Gibbs Crossing, Ma
4 hours ago · USGS 01173500 |
55 cfs | 2.10 ft | · | 53°F | 380 ft | Chicopee |
|
Quaboag River At West Brimfield, Ma
5 hours ago · USGS 01176000 |
43 cfs | 2.62 ft | · | 53°F | 388 ft | Chicopee |
|
Hoosic River At Adams, Ma
4 hours ago · USGS 01331500 |
42 cfs | 5.78 ft | · | 53°F | 831 ft | Hudson-Hoosic |
|
Charles River At Dover, Ma
4 hours ago · USGS 01103500 |
36 cfs | · | · | 55°F | 93 ft | Charles |
|
Neponset River At Milton Village, Ma
4 hours ago · USGS 011055566 |
36 cfs | · | · | 57°F | 5 ft | Charles |
|
Quinebaug R Bl Westville Dam Nr Southbridge, Ma
4 hours ago · USGS 01123600 |
35 cfs | 3.37 ft | · | 53°F | 513 ft | Quinebaug |
|
North River At Shattuckville, Ma
4 hours ago · USGS 01169000 |
34 cfs | 1.44 ft | · | 53°F | 459 ft | Deerfield |
|
West Branch Farmington River Near New Boston, Ma
4 hours ago · USGS 01185500 |
32 cfs | 2.35 ft | · | 54°F | 776 ft | Farmington |
|
Charles River At Waltham, Ma
4 hours ago · USGS 01104500 |
31 cfs | · | · | 56°F | 16 ft | Charles |
|
Quinebaug R Bl E Brimfield Dam At Fiskdale, Ma
4 hours ago · USGS 01123360 |
27 cfs | 2.47 ft | · | 53°F | 614 ft | Quinebaug |
|
East Branch Housatonic River At Coltsville, Ma
4 hours ago · USGS 01197000 |
27 cfs | · | · | 53°F | 996 ft | Housatonic |
|
Assabet River At Maynard, Ma
4 hours ago · USGS 01097000 |
26 cfs | 1.39 ft | · | 54°F | 154 ft | Concord |
|
West Branch Westfield River At Huntington, Ma
4 hours ago · USGS 01181000 |
26 cfs | 3.11 ft | · | 53°F | 391 ft | Westfield |
|
Charles River At Wellesley, Ma
4 hours ago · USGS 01104200 |
24 cfs | 2.74 ft | · | 56°F | 67 ft | Charles |
|
Stony Brook At Rt 20 At Waltham, Ma
4 hours ago · USGS 01104460 |
22 cfs | 5.24 ft | 71°F | 56°F | 87 ft | Charles |
|
Green River At Williamstown, Ma
4 hours ago · USGS 01333000 |
22 cfs | 1.62 ft | · | 54°F | 614 ft | Hudson-Hoosic |
|
Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma
4 hours ago · USGS 01104430 |
21 cfs | 1.23 ft | 74°F | 56°F | 145 ft | Charles |
|
North Nashua River At Fitchburg, Ma
4 hours ago · USGS 01094400 |
19 cfs | 2.30 ft | · | 52°F | 399 ft | Nashua |
|
Neponset River At Greenlodge St Near Canton, Ma
4 hours ago · USGS 01105554 |
18 cfs | 6.38 ft | · | 55°F | 46 ft | Charles |
|
Green River Near Colrain, Ma
5 hours ago · USGS 01170100 |
18 cfs | 2.63 ft | 63°F | 52°F | 436 ft | Deerfield |
|
Squannacook River Near West Groton, Ma
5 hours ago · USGS 01096000 |
16 cfs | 1.56 ft | · | 52°F | 246 ft | Nashua |
|
Charles River At Medway, Ma
4 hours ago · USGS 01103280 |
16 cfs | · | · | 54°F | 129 ft | Charles |
|
Ware River At Intake Works Near Barre, Ma
4 hours ago · USGS 01173000 |
16 cfs | 3.14 ft | 68°F | 51°F | 639 ft | Chicopee |
|
Mill River At Northampton, Ma
5 hours ago · USGS 01171500 |
15 cfs | 5.53 ft | · | 55°F | 205 ft | Middle Connecticut |
|
Millers River Near Winchendon, Ma
5 hours ago · USGS 01162000 |
15 cfs | 3.90 ft | · | 49°F | 834 ft | Miller |
|
Quashnet River At Waquoit Village, Ma
4 hours ago · USGS 011058837 |
15 cfs | 2.04 ft | · | 68°F | 3 ft | Cape Cod |
|
Aberjona River At Winchester, Ma
5 hours ago · USGS 01102500 |
14 cfs | 7.29 ft | · | 57°F | 14 ft | Charles |
|
Green River Near Great Barrington, Ma
4 hours ago · USGS 01198000 |
13 cfs | · | · | 55°F | 694 ft | Housatonic |
|
Quinapoxet River At Canada Mills Near Holden, Ma
4 hours ago · USGS 01095375 |
12 cfs | 6.46 ft | 65°F | 53°F | 569 ft | Nashua |
|
South River Near Conway, Ma
5 hours ago · USGS 01169900 |
11 cfs | 1.44 ft | · | 54°F | 456 ft | Deerfield |
|
Shawsheen River Near Wilmington, Ma
4 hours ago · USGS 01100600 |
10 cfs | 2.05 ft | · | 55°F | 95 ft | Merrimack |
|
Ware River Near Barre, Ma
4 hours ago · USGS 01172500 |
10 cfs | 2.46 ft | · | 50°F | 738 ft | Chicopee |
|
Mother Brook At Dedham, Ma
4 hours ago · USGS 01104000 |
9 cfs | 80.13 ft | · | 56°F | 87 ft | Charles |
|
Threemile River At North Dighton, Ma
4 hours ago · USGS 01109060 |
9 cfs | 2.06 ft | · | 54°F | 12 ft | Narragansett |
|
Jones River At Kingston, Ma
4 hours ago · USGS 01105870 |
9 cfs | 2.85 ft | · | 67°F | 8 ft | Cape Cod |
|
Indian Head River At Hanover, Ma
4 hours ago · USGS 01105730 |
7 cfs | 1.32 ft | · | 69°F | 8 ft | Cape Cod |
|
Sudbury River At Saxonville, Ma
4 hours ago · USGS 01098530 |
7 cfs | 4.02 ft | · | 55°F | 116 ft | Concord |
|
Otter River At Otter River, Ma
4 hours ago · USGS 01163200 |
6 cfs | · | · | 49°F | 901 ft | Miller |
|
East Branch Neponset River At Canton, Ma
4 hours ago · USGS 01105500 |
6 cfs | · | 79°F | 55°F | 80 ft | Charles |
|
Stillwater River Near Sterling, Ma
4 hours ago · USGS 01095220 |
5 cfs | 3.94 ft | 65°F | 53°F | 403 ft | Nashua |
|
Paskamanset River Near South Dartmouth, Ma
4 hours ago · USGS 01105933 |
5 cfs | 8.34 ft | · | 70°F | 29 ft | Cape Cod |
|
Priest Brook Near Winchendon, Ma
4 hours ago · USGS 01162500 |
5 cfs | 2.41 ft | · | 49°F | 852 ft | Miller |
|
Quinsigamond River At North Grafton, Ma
4 hours ago · USGS 01110000 |
5 cfs | · | · | 53°F | 349 ft | Blackstone |
|
Neponset River At Norwood, Ma
5 hours ago · USGS 01105000 |
4 cfs | 5.56 ft | · | 54°F | 51 ft | Charles |
|
West Branch Swift River Near Shutesbury, Ma
5 hours ago · USGS 01174565 |
3 cfs | 1.16 ft | · | 54°F | 536 ft | Chicopee |
|
Ipswich River Near Ipswich, Ma
4 hours ago · USGS 01102000 |
3 cfs | 2.36 ft | · | 54°F | 21 ft | Charles |
|
Wading River Near Norton, Ma
4 hours ago · USGS 01109000 |
2 cfs | 4.90 ft | · | 54°F | 63 ft | Narragansett |
|
Sevenmile River Near Spencer, Ma
4 hours ago · USGS 01175670 |
2 cfs | 9.23 ft | · | 52°F | 650 ft | Chicopee |
|
Herring River At North Harwich, Ma
4 hours ago · USGS 01105880 |
2 cfs | 1.73 ft | · | 70°F | 21 ft | Cape Cod |
|
Saugus R At Saugus Iron Works At Saugus, Ma
4 hours ago · USGS 01102345 |
2 cfs | · | · | 57°F | 14 ft | Charles |
|
East Branch Swift River Near Hardwick, Ma
4 hours ago · USGS 01174500 |
2 cfs | 19.27 ft | · | 53°F | 520 ft | Chicopee |
|
Ipswich River At South Middleton, Ma
4 hours ago · USGS 01101500 |
1 cfs | 1.75 ft | · | 55°F | 49 ft | Charles |
|
Whitmans Pond, Ma
4 hours ago · USGS 01105606 |
1 cfs | 70.99 ft | · | 57°F | 75 ft | Charles |
|
Whitmans Pond Fish Ladder At East Weymouth, Ma
4 hours ago · USGS 01105608 |
1 cfs | 31.27 ft | · | 57°F | 52 ft | Charles |
|
Lake Cochituate Outlet At Framingham, Ma
5 hours ago · USGS 01098500 |
0 cfs | · | · | 55°F | 129 ft | Concord |
|
Nashoba Brook Near Acton, Ma
4 hours ago · USGS 01097300 |
0 cfs | 3.48 ft | · | 54°F | 155 ft | Concord |
|
Segreganset River Near Dighton, Ma
4 hours ago · USGS 01109070 |
0 cfs | 1.61 ft | · | 71°F | 36 ft | Narragansett |
|
Old Swamp River Near South Weymouth, Ma
5 hours ago · USGS 01105600 |
0 cfs | 2.35 ft | · | 56°F | 87 ft | Cape Cod |
|
Parker River At Byfield, Ma
4 hours ago · USGS 01101000 |
0 cfs | · | · | 54°F | 25 ft | Charles |
|
Stony Brook Reservoir At Dam Near Waltham, Ma
4 hours ago · USGS 01104480 |
0 cfs | · | 36°F | 56°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 6, 2026, Massachusetts rivers are running at 74% of normal across 78 USGS streamgauges, and the Connecticut R At Interstate 391 Bridge At Holyoke is reporting the highest discharge at 3,260 cfs. The full sortable gauge table is below.
Which Massachusetts river is running highest right now?
As of September 6, 2026, the highest discharge in Massachusetts is 3,260 cfs on the Connecticut R At Interstate 391 Bridge At Holyoke. 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.
Streamflow in every state
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