Massachusetts River Levels & Streamflow
As of Aug 3, 2026, Massachusetts rivers are running at 325% of normal across 78 USGS gauges — the highest is 15,300 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 325% of normal, with the Connecticut R At Interstate 391 Bridge At Holyoke reporting the highest discharge in the state at 15,300 cfs and a gauge stage of 9.28 ft.
Meanwhile, the Ware River Near Barre is seeing a spike today — up 99% 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 9.28 ft
Biggest 24h spike
Now 213 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
1 day ago · USGS 01172010 |
11,500 cfs | 8.03 ft | · | 85°F | 43 ft | Middle Connecticut |
|
Connecticut River At Montague City, Ma
1 day ago · USGS 01170500 |
6,200 cfs | 8.89 ft | · | 85°F | 111 ft | Middle Connecticut |
|
Merrimack River Bl Concord River At Lowell, Ma
1 day ago · USGS 01100000 |
3,310 cfs | 42.62 ft | · | 86°F | 50 ft | Merrimack |
|
Deerfield River At Charlemont, Ma
1 day ago · USGS 01168500 |
2,080 cfs | 4.12 ft | · | 78°F | 517 ft | Deerfield |
|
Deerfield River Near West Deerfield, Ma
1 day ago · USGS 01170000 |
1,870 cfs | 3.65 ft | · | 83°F | 157 ft | Deerfield |
|
Housatonic River Nr Ashley Falls, Ma
1 day ago · USGS 01198125 |
1,790 cfs | 6.95 ft | · | 82°F | 646 ft | Housatonic |
|
Westfield River Near Westfield, Ma
1 day ago · USGS 01183500 |
1,530 cfs | 5.68 ft | · | 84°F | 140 ft | Westfield |
|
Millers River At Erving, Ma
1 day ago · USGS 01166500 |
1,120 cfs | 3.62 ft | · | 83°F | 378 ft | Miller |
|
Westfield River At Knightville, Ma
1 day ago · USGS 01179500 |
986 cfs | 4.86 ft | · | 81°F | 464 ft | Westfield |
|
Housatonic River Near Great Barrington, Ma
1 day ago · USGS 01197500 |
843 cfs | 3.21 ft | · | 82°F | 693 ft | Housatonic |
|
Chicopee River At Indian Orchard, Ma
1 day ago · USGS 01177000 |
685 cfs | 4.93 ft | · | 85°F | 126 ft | Chicopee |
|
Nashua River At East Pepperell, Ma
23 hours ago · USGS 01096500 |
449 cfs | 2.12 ft | · | 85°F | 165 ft | Nashua |
|
Ware River At Gibbs Crossing, Ma
1 day ago · USGS 01173500 |
384 cfs | 2.97 ft | · | 82°F | 380 ft | Chicopee |
|
Concord R Below R Meadow Brook, Ma
1 day ago · USGS 01099500 |
335 cfs | 4.78 ft | · | 86°F | 67 ft | Merrimack |
|
Ware River At Intake Works Near Barre, Ma
1 day ago · USGS 01173000 |
290 cfs | 5.10 ft | 74°F | 81°F | 639 ft | Chicopee |
|
Hoosic River Near Williamstown, Ma
1 day ago · USGS 01332500 |
255 cfs | 5.77 ft | · | 81°F | 618 ft | Hudson-Hoosic |
|
Millers River Near Winchendon, Ma
1 day ago · USGS 01162000 |
242 cfs | 5.20 ft | · | 81°F | 834 ft | Miller |
|
Ware River Near Barre, Ma
23 hours ago · USGS 01172500 |
210 cfs | 3.82 ft | · | 81°F | 738 ft | Chicopee |
|
North River At Shattuckville, Ma
1 day ago · USGS 01169000 |
171 cfs | 2.65 ft | · | 80°F | 459 ft | Deerfield |
|
North Nashua River Near Leominster, Ma
1 day ago · USGS 01094500 |
164 cfs | 2.75 ft | · | 84°F | 274 ft | Nashua |
|
Green River Near Great Barrington, Ma
1 day ago · USGS 01198000 |
152 cfs | 1.65 ft | · | 82°F | 694 ft | Housatonic |
|
Taunton River Near Bridgewater, Ma
23 hours ago · USGS 01108000 |
140 cfs | 3.46 ft | 62°F | 83°F | 10 ft | Narragansett |
|
Quaboag River At West Brimfield, Ma
1 day ago · USGS 01176000 |
139 cfs | 3.18 ft | · | 82°F | 388 ft | Chicopee |
|
Neponset River At Milton Village, Ma
1 day ago · USGS 011055566 |
129 cfs | 1.42 ft | · | 85°F | 5 ft | Charles |
|
West Branch Westfield River At Huntington, Ma
1 day ago · USGS 01181000 |
120 cfs | 3.90 ft | · | 81°F | 391 ft | Westfield |
|
Blackstone River, Ma
1 day ago · USGS 01109730 |
115 cfs | 2.11 ft | · | 83°F | 382 ft | Blackstone |
|
Otter River At Otter River, Ma
1 day ago · USGS 01163200 |
110 cfs | 1.69 ft | · | 80°F | 901 ft | Miller |
|
Assabet River At Maynard, Ma
1 day ago · USGS 01097000 |
107 cfs | 2.15 ft | · | 84°F | 154 ft | Concord |
|
Charles River At Dover, Ma
23 hours ago · USGS 01103500 |
106 cfs | · | · | 84°F | 93 ft | Charles |
|
North Nashua River At Fitchburg, Ma
1 day ago · USGS 01094400 |
103 cfs | 3.00 ft | · | 83°F | 399 ft | Nashua |
|
West Branch Farmington River Near New Boston, Ma
1 day ago · USGS 01185500 |
103 cfs | 3.04 ft | · | 81°F | 776 ft | Farmington |
|
Green River At Williamstown, Ma
1 day ago · USGS 01333000 |
93 cfs | 2.43 ft | · | 82°F | 614 ft | Hudson-Hoosic |
|
East Branch Housatonic River At Coltsville, Ma
1 day ago · USGS 01197000 |
91 cfs | 1.16 ft | · | 80°F | 996 ft | Housatonic |
|
Hoosic River At Adams, Ma
23 hours ago · USGS 01331500 |
90 cfs | 6.04 ft | · | 82°F | 831 ft | Hudson-Hoosic |
|
Priest Brook Near Winchendon, Ma
23 hours ago · USGS 01162500 |
81 cfs | 3.41 ft | · | 81°F | 852 ft | Miller |
|
Charles River At Waltham, Ma
1 day ago · USGS 01104500 |
77 cfs | 1.07 ft | · | 85°F | 16 ft | Charles |
|
Squannacook River Near West Groton, Ma
1 day ago · USGS 01096000 |
66 cfs | 2.28 ft | · | 84°F | 246 ft | Nashua |
|
Charles River At Wellesley, Ma
23 hours ago · USGS 01104200 |
64 cfs | 2.92 ft | · | 85°F | 67 ft | Charles |
|
Quinebaug R Bl Westville Dam Nr Southbridge, Ma
1 day ago · USGS 01123600 |
60 cfs | 3.63 ft | · | 82°F | 513 ft | Quinebaug |
|
Charles River At Medway, Ma
23 hours ago · USGS 01103280 |
58 cfs | 1.17 ft | · | 83°F | 129 ft | Charles |
|
Green River Near Colrain, Ma
1 day ago · USGS 01170100 |
57 cfs | 3.11 ft | 45°F | 81°F | 436 ft | Deerfield |
|
Shawsheen River Near Wilmington, Ma
1 day ago · USGS 01100600 |
48 cfs | 2.77 ft | · | 86°F | 95 ft | Merrimack |
|
Swift River At West Ware, Ma
1 day ago · USGS 01175500 |
48 cfs | 2.18 ft | · | 83°F | 370 ft | Chicopee |
|
Mill River At Northampton, Ma
1 day ago · USGS 01171500 |
47 cfs | 5.99 ft | · | 84°F | 205 ft | Middle Connecticut |
|
Quinebaug R Bl E Brimfield Dam At Fiskdale, Ma
1 day ago · USGS 01123360 |
46 cfs | 2.71 ft | · | 82°F | 614 ft | Quinebaug |
|
Quinsigamond River At North Grafton, Ma
1 day ago · USGS 01110000 |
45 cfs | 1.58 ft | · | 83°F | 349 ft | Blackstone |
|
Neponset River At Greenlodge St Near Canton, Ma
1 day ago · USGS 01105554 |
42 cfs | 7.02 ft | · | 85°F | 46 ft | Charles |
|
Stillwater River Near Sterling, Ma
1 day ago · USGS 01095220 |
40 cfs | 4.54 ft | 70°F | 83°F | 403 ft | Nashua |
|
Indian Head River At Hanover, Ma
1 day ago · USGS 01105730 |
39 cfs | 1.92 ft | · | 84°F | 8 ft | Cape Cod |
|
East Branch Swift River Near Hardwick, Ma
1 day ago · USGS 01174500 |
35 cfs | 19.52 ft | · | 82°F | 520 ft | Chicopee |
|
South River Near Conway, Ma
1 day ago · USGS 01169900 |
33 cfs | 1.85 ft | · | 82°F | 456 ft | Deerfield |
|
Sudbury River At Saxonville, Ma
1 day ago · USGS 01098530 |
32 cfs | 4.57 ft | · | 85°F | 116 ft | Concord |
|
Mother Brook At Dedham, Ma
1 day ago · USGS 01104000 |
32 cfs | 80.60 ft | · | 85°F | 87 ft | Charles |
|
Threemile River At North Dighton, Ma
1 day ago · USGS 01109060 |
29 cfs | 2.46 ft | · | 82°F | 12 ft | Narragansett |
|
Quinapoxet River At Canada Mills Near Holden, Ma
1 day ago · USGS 01095375 |
27 cfs | 6.87 ft | 73°F | 82°F | 569 ft | Nashua |
|
Ipswich River Near Ipswich, Ma
1 day ago · USGS 01102000 |
25 cfs | 2.89 ft | · | 85°F | 21 ft | Charles |
|
Paskamanset River Near South Dartmouth, Ma
1 day ago · USGS 01105933 |
21 cfs | 8.76 ft | · | 80°F | 29 ft | Cape Cod |
|
Aberjona River At Winchester, Ma
1 day ago · USGS 01102500 |
16 cfs | 7.33 ft | · | 86°F | 14 ft | Charles |
|
Stony Brook At Rt 20 At Waltham, Ma
23 hours ago · USGS 01104460 |
16 cfs | 5.09 ft | 74°F | 85°F | 87 ft | Charles |
|
Quashnet River At Waquoit Village, Ma
1 day ago · USGS 011058837 |
16 cfs | 2.09 ft | · | 79°F | 3 ft | Cape Cod |
|
West Branch Swift River Near Shutesbury, Ma
1 day ago · USGS 01174565 |
13 cfs | 1.37 ft | · | 81°F | 536 ft | Chicopee |
|
Neponset River At Norwood, Ma
1 day ago · USGS 01105000 |
13 cfs | 5.78 ft | · | 84°F | 51 ft | Charles |
|
Jones River At Kingston, Ma
1 day ago · USGS 01105870 |
12 cfs | 2.93 ft | · | 82°F | 8 ft | Cape Cod |
|
Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma
23 hours ago · USGS 01104430 |
12 cfs | · | 75°F | 85°F | 145 ft | Charles |
|
Wading River Near Norton, Ma
1 day ago · USGS 01109000 |
10 cfs | 5.22 ft | · | 83°F | 63 ft | Narragansett |
|
East Branch Neponset River At Canton, Ma
1 day ago · USGS 01105500 |
10 cfs | · | 79°F | 84°F | 80 ft | Charles |
|
Ipswich River At South Middleton, Ma
1 day ago · USGS 01101500 |
10 cfs | 2.10 ft | · | 85°F | 49 ft | Charles |
|
Lake Cochituate Outlet At Framingham, Ma
1 day ago · USGS 01098500 |
8 cfs | 3.77 ft | · | 85°F | 129 ft | Concord |
|
Sevenmile River Near Spencer, Ma
1 day ago · USGS 01175670 |
8 cfs | 9.43 ft | · | 81°F | 650 ft | Chicopee |
|
Saugus R At Saugus Iron Works At Saugus, Ma
23 hours ago · USGS 01102345 |
7 cfs | 1.47 ft | · | 85°F | 14 ft | Charles |
|
Nashoba Brook Near Acton, Ma
23 hours ago · USGS 01097300 |
5 cfs | 3.68 ft | · | 84°F | 155 ft | Concord |
|
Herring River At North Harwich, Ma
23 hours ago · USGS 01105880 |
4 cfs | 1.96 ft | · | 80°F | 21 ft | Cape Cod |
|
Old Swamp River Near South Weymouth, Ma
1 day ago · USGS 01105600 |
2 cfs | 2.57 ft | · | 85°F | 87 ft | Cape Cod |
|
Segreganset River Near Dighton, Ma
23 hours ago · USGS 01109070 |
1 cfs | 1.73 ft | · | 82°F | 36 ft | Narragansett |
|
Whitmans Pond Fish Ladder At East Weymouth, Ma
23 hours ago · USGS 01105608 |
1 cfs | 31.34 ft | · | 85°F | 52 ft | Charles |
|
Whitmans Pond, Ma
1 day ago · USGS 01105606 |
1 cfs | 71.74 ft | · | 85°F | 75 ft | Charles |
|
Parker River At Byfield, Ma
1 day ago · USGS 01101000 |
1 cfs | · | · | 85°F | 25 ft | Charles |
|
Stony Brook Reservoir At Dam Near Waltham, Ma
23 hours ago · USGS 01104480 |
0 cfs | · | 36°F | 85°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 325% of normal across 78 USGS streamgauges, and the Connecticut R At Interstate 391 Bridge At Holyoke is reporting the highest discharge at 15,300 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 15,300 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.