Massachusetts River Levels & Streamflow
As of Aug 3, 2026, Massachusetts rivers are running at 230% of normal across 78 USGS gauges — the highest is 11,500 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 230% of normal, with the Connecticut R At Interstate 391 Bridge At Holyoke reporting the highest discharge in the state at 11,500 cfs and a gauge stage of 8.03 ft.
Meanwhile, the Chicopee River At Indian Orchard is seeing a spike today — up 18% 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
A Flash Flood Warning remains in effect across southeastern Massachusetts until 11:45 AM EDT on August 3rd, with heavy thunderstorms producing 1-2 inches of rainfall per hour. Residents in Taunton, Attleboro, North Attleboro, and surrounding areas should expect flash flooding in low-lying areas, urban zones, and underpasses. Additionally, a High Surf Advisory is active for coastal Massachusetts counties through 9:00 PM EDT, with breaking waves of 5-8 feet creating dangerous swimming conditions and potential beach erosion. Exercise extreme caution near flooded roadways and waterways, avoid driving through flooded areas, and remain alert as another round of moderate to heavy rain is expected within the hour.
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 8.03 ft
Biggest 24h spike
Now 685 cfs
Network coverage
USGS gauges feeding 0 named rivers in Massachusetts.
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
12 hours ago · USGS 01172010 |
8,580 cfs | 7.00 ft | · | 69°F | 43 ft | Middle Connecticut |
|
Connecticut River At Montague City, Ma
13 hours ago · USGS 01170500 |
4,620 cfs | 8.10 ft | · | 68°F | 111 ft | Middle Connecticut |
|
Merrimack River Bl Concord River At Lowell, Ma
12 hours ago · USGS 01100000 |
3,680 cfs | 42.77 ft | · | 68°F | 50 ft | Merrimack |
|
Deerfield River Near West Deerfield, Ma
12 hours ago · USGS 01170000 |
1,490 cfs | 3.39 ft | · | 67°F | 157 ft | Deerfield |
|
Deerfield River At Charlemont, Ma
12 hours ago · USGS 01168500 |
1,450 cfs | 3.62 ft | · | 64°F | 517 ft | Deerfield |
|
Westfield River Near Westfield, Ma
13 hours ago · USGS 01183500 |
1,260 cfs | 5.34 ft | · | 68°F | 140 ft | Westfield |
|
Housatonic River Nr Ashley Falls, Ma
13 hours ago · USGS 01198125 |
1,150 cfs | 5.28 ft | · | 67°F | 646 ft | Housatonic |
|
Chicopee River At Indian Orchard, Ma
13 hours ago · USGS 01177000 |
851 cfs | 5.15 ft | · | 69°F | 126 ft | Chicopee |
|
Millers River At Erving, Ma
13 hours ago · USGS 01166500 |
758 cfs | 3.17 ft | · | 67°F | 378 ft | Miller |
|
Westfield River At Knightville, Ma
12 hours ago · USGS 01179500 |
666 cfs | 4.36 ft | · | 66°F | 464 ft | Westfield |
|
Housatonic River Near Great Barrington, Ma
12 hours ago · USGS 01197500 |
602 cfs | 2.85 ft | · | 66°F | 693 ft | Housatonic |
|
Nashua River At East Pepperell, Ma
12 hours ago · USGS 01096500 |
405 cfs | 2.00 ft | · | 67°F | 165 ft | Nashua |
|
Ware River At Gibbs Crossing, Ma
12 hours ago · USGS 01173500 |
367 cfs | 2.94 ft | · | 68°F | 380 ft | Chicopee |
|
Concord R Below R Meadow Brook, Ma
12 hours ago · USGS 01099500 |
278 cfs | 4.63 ft | · | 68°F | 67 ft | Merrimack |
|
Ware River At Intake Works Near Barre, Ma
13 hours ago · USGS 01173000 |
221 cfs | 4.85 ft | 75°F | 66°F | 639 ft | Chicopee |
|
Hoosic River Near Williamstown, Ma
13 hours ago · USGS 01332500 |
210 cfs | 5.68 ft | · | 66°F | 618 ft | Hudson-Hoosic |
|
Millers River Near Winchendon, Ma
13 hours ago · USGS 01162000 |
154 cfs | 4.76 ft | · | 65°F | 834 ft | Miller |
|
Quaboag River At West Brimfield, Ma
13 hours ago · USGS 01176000 |
135 cfs | 3.16 ft | · | 68°F | 388 ft | Chicopee |
|
Green River Near Great Barrington, Ma
12 hours ago · USGS 01198000 |
126 cfs | 1.54 ft | · | 66°F | 694 ft | Housatonic |
|
North River At Shattuckville, Ma
12 hours ago · USGS 01169000 |
125 cfs | 2.37 ft | · | 65°F | 459 ft | Deerfield |
|
Taunton River Near Bridgewater, Ma
13 hours ago · USGS 01108000 |
117 cfs | 3.37 ft | 62°F | 69°F | 10 ft | Narragansett |
|
North Nashua River Near Leominster, Ma
13 hours ago · USGS 01094500 |
114 cfs | 2.49 ft | · | 68°F | 274 ft | Nashua |
|
Charles River At Dover, Ma
13 hours ago · USGS 01103500 |
112 cfs | · | · | 69°F | 93 ft | Charles |
|
West Branch Westfield River At Huntington, Ma
12 hours ago · USGS 01181000 |
102 cfs | 3.81 ft | · | 66°F | 391 ft | Westfield |
|
Blackstone River, Ma
13 hours ago · USGS 01109730 |
93 cfs | 1.98 ft | · | 68°F | 382 ft | Blackstone |
|
Hoosic River At Adams, Ma
13 hours ago · USGS 01331500 |
90 cfs | 6.04 ft | · | 66°F | 831 ft | Hudson-Hoosic |
|
Ware River Near Barre, Ma
13 hours ago · USGS 01172500 |
84 cfs | 3.29 ft | · | 66°F | 738 ft | Chicopee |
|
Neponset River At Milton Village, Ma
15 hours ago · USGS 011055566 |
82 cfs | 2.05 ft | · | 70°F | 5 ft | Charles |
|
West Branch Farmington River Near New Boston, Ma
12 hours ago · USGS 01185500 |
82 cfs | 2.89 ft | · | 66°F | 776 ft | Farmington |
|
Green River At Williamstown, Ma
13 hours ago · USGS 01333000 |
76 cfs | 2.30 ft | · | 66°F | 614 ft | Hudson-Hoosic |
|
Assabet River At Maynard, Ma
13 hours ago · USGS 01097000 |
75 cfs | 1.91 ft | · | 68°F | 154 ft | Concord |
|
Charles River At Waltham, Ma
12 hours ago · USGS 01104500 |
74 cfs | 1.05 ft | · | 70°F | 16 ft | Charles |
|
East Branch Housatonic River At Coltsville, Ma
12 hours ago · USGS 01197000 |
72 cfs | 1.04 ft | · | 66°F | 996 ft | Housatonic |
|
Otter River At Otter River, Ma
13 hours ago · USGS 01163200 |
65 cfs | 1.37 ft | · | 65°F | 901 ft | Miller |
|
North Nashua River At Fitchburg, Ma
12 hours ago · USGS 01094400 |
64 cfs | 2.74 ft | · | 67°F | 399 ft | Nashua |
|
Charles River At Wellesley, Ma
12 hours ago · USGS 01104200 |
62 cfs | 2.91 ft | · | 70°F | 67 ft | Charles |
|
Priest Brook Near Winchendon, Ma
13 hours ago · USGS 01162500 |
56 cfs | 3.19 ft | · | 65°F | 852 ft | Miller |
|
Quinebaug R Bl Westville Dam Nr Southbridge, Ma
12 hours ago · USGS 01123600 |
53 cfs | 3.57 ft | · | 68°F | 513 ft | Quinebaug |
|
Charles River At Medway, Ma
13 hours ago · USGS 01103280 |
52 cfs | 1.13 ft | · | 68°F | 129 ft | Charles |
|
Swift River At West Ware, Ma
13 hours ago · USGS 01175500 |
48 cfs | 2.18 ft | · | 68°F | 370 ft | Chicopee |
|
Green River Near Colrain, Ma
13 hours ago · USGS 01170100 |
45 cfs | 3.00 ft | 45°F | 65°F | 436 ft | Deerfield |
|
Squannacook River Near West Groton, Ma
13 hours ago · USGS 01096000 |
45 cfs | 2.04 ft | · | 67°F | 246 ft | Nashua |
|
Neponset River At Greenlodge St Near Canton, Ma
12 hours ago · USGS 01105554 |
44 cfs | 7.07 ft | · | 69°F | 46 ft | Charles |
|
Mill River At Northampton, Ma
13 hours ago · USGS 01171500 |
43 cfs | 5.94 ft | · | 68°F | 205 ft | Middle Connecticut |
|
Quinebaug R Bl E Brimfield Dam At Fiskdale, Ma
12 hours ago · USGS 01123360 |
41 cfs | 2.63 ft | · | 68°F | 614 ft | Quinebaug |
|
Quinsigamond River At North Grafton, Ma
13 hours ago · USGS 01110000 |
32 cfs | 1.45 ft | · | 68°F | 349 ft | Blackstone |
|
Mother Brook At Dedham, Ma
13 hours ago · USGS 01104000 |
30 cfs | 80.57 ft | · | 70°F | 87 ft | Charles |
|
South River Near Conway, Ma
13 hours ago · USGS 01169900 |
29 cfs | 1.79 ft | · | 66°F | 456 ft | Deerfield |
|
East Branch Swift River Near Hardwick, Ma
12 hours ago · USGS 01174500 |
26 cfs | 19.48 ft | · | 67°F | 520 ft | Chicopee |
|
Ipswich River Near Ipswich, Ma
13 hours ago · USGS 01102000 |
26 cfs | 2.90 ft | · | 68°F | 21 ft | Charles |
|
Threemile River At North Dighton, Ma
13 hours ago · USGS 01109060 |
26 cfs | 2.42 ft | · | 69°F | 12 ft | Narragansett |
|
Neponset River At Norwood, Ma
13 hours ago · USGS 01105000 |
25 cfs | 5.96 ft | · | 69°F | 51 ft | Charles |
|
Indian Head River At Hanover, Ma
12 hours ago · USGS 01105730 |
23 cfs | 1.68 ft | · | 69°F | 8 ft | Cape Cod |
|
Sudbury River At Saxonville, Ma
13 hours ago · USGS 01098530 |
22 cfs | 4.42 ft | · | 69°F | 116 ft | Concord |
|
Shawsheen River Near Wilmington, Ma
12 hours ago · USGS 01100600 |
22 cfs | 2.40 ft | · | 69°F | 95 ft | Merrimack |
|
Stillwater River Near Sterling, Ma
12 hours ago · USGS 01095220 |
22 cfs | 4.28 ft | 71°F | 67°F | 403 ft | Nashua |
|
Quinapoxet River At Canada Mills Near Holden, Ma
12 hours ago · USGS 01095375 |
21 cfs | 6.74 ft | 74°F | 67°F | 569 ft | Nashua |
|
Paskamanset River Near South Dartmouth, Ma
13 hours ago · USGS 01105933 |
18 cfs | 8.68 ft | · | 70°F | 29 ft | Cape Cod |
|
Quashnet River At Waquoit Village, Ma
13 hours ago · USGS 011058837 |
16 cfs | 2.09 ft | · | 70°F | 3 ft | Cape Cod |
|
Stony Brook At Rt 20 At Waltham, Ma
12 hours ago · USGS 01104460 |
15 cfs | 5.07 ft | 75°F | 70°F | 87 ft | Charles |
|
Aberjona River At Winchester, Ma
13 hours ago · USGS 01102500 |
14 cfs | 7.26 ft | · | 70°F | 14 ft | Charles |
|
West Branch Swift River Near Shutesbury, Ma
13 hours ago · USGS 01174565 |
13 cfs | 1.37 ft | · | 67°F | 536 ft | Chicopee |
|
Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma
12 hours ago · USGS 01104430 |
12 cfs | · | 76°F | 69°F | 145 ft | Charles |
|
East Branch Neponset River At Canton, Ma
13 hours ago · USGS 01105500 |
11 cfs | · | 79°F | 69°F | 80 ft | Charles |
|
Jones River At Kingston, Ma
13 hours ago · USGS 01105870 |
11 cfs | 2.91 ft | · | 69°F | 8 ft | Cape Cod |
|
Wading River Near Norton, Ma
13 hours ago · USGS 01109000 |
10 cfs | 5.21 ft | · | 69°F | 63 ft | Narragansett |
|
Ipswich River At South Middleton, Ma
12 hours ago · USGS 01101500 |
8 cfs | 2.06 ft | · | 69°F | 49 ft | Charles |
|
Saugus R At Saugus Iron Works At Saugus, Ma
12 hours ago · USGS 01102345 |
7 cfs | 1.46 ft | · | 70°F | 14 ft | Charles |
|
Lake Cochituate Outlet At Framingham, Ma
13 hours ago · USGS 01098500 |
7 cfs | 2.82 ft | · | 69°F | 129 ft | Concord |
|
Sevenmile River Near Spencer, Ma
12 hours ago · USGS 01175670 |
5 cfs | 9.38 ft | · | 67°F | 650 ft | Chicopee |
|
Herring River At North Harwich, Ma
13 hours ago · USGS 01105880 |
4 cfs | 1.97 ft | · | 71°F | 21 ft | Cape Cod |
|
Nashoba Brook Near Acton, Ma
13 hours ago · USGS 01097300 |
4 cfs | 3.60 ft | · | 68°F | 155 ft | Concord |
|
Segreganset River Near Dighton, Ma
13 hours ago · USGS 01109070 |
1 cfs | 1.71 ft | · | 69°F | 36 ft | Narragansett |
|
Old Swamp River Near South Weymouth, Ma
13 hours ago · USGS 01105600 |
1 cfs | 2.52 ft | · | 69°F | 87 ft | Cape Cod |
|
Whitmans Pond, Ma
13 hours ago · USGS 01105606 |
1 cfs | 71.72 ft | · | 70°F | 75 ft | Charles |
|
Whitmans Pond Fish Ladder At East Weymouth, Ma
13 hours ago · USGS 01105608 |
1 cfs | 31.32 ft | · | 70°F | 52 ft | Charles |
|
Parker River At Byfield, Ma
12 hours ago · USGS 01101000 |
1 cfs | · | · | 68°F | 25 ft | Charles |
|
Stony Brook Reservoir At Dam Near Waltham, Ma
13 hours ago · USGS 01104480 |
0 cfs | · | 36°F | 70°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 August 3, 2026, Massachusetts rivers are running at 230% of normal across 78 USGS streamgauges, and the Connecticut R At Interstate 391 Bridge At Holyoke is reporting the highest discharge at 11,500 cfs. The full sortable gauge table is below.
Which Massachusetts river is running highest right now?
As of August 3, 2026, the highest discharge in Massachusetts is 11,500 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.