Flow report
Massachusetts streamflow
Live discharge, gauge height, water temperature, and percent-of-normal readings from every USGS streamgauge in Massachusetts. Built for paddlers, anglers, water managers, and flood researchers.
USGS gauges
78
State percent normal
68%
Paddle runs
0
Updated
Jul 17
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Every USGS streamgauge filtered to Massachusetts.
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July
17
2026
Flow briefing
Streamflow levels across Massachusetts are currently 68% of normal, with the Connecticut R At Interstate 391 Bridge At Holyoke reporting the highest discharge in the state at 4,390 cfs and a gauge stage of 5.23 ft.
Meanwhile, the Deerfield River At Charlemont is seeing a spike today — up 282% 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.
River levels near Massachusetts towns
Massachusetts at a glance
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
68%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Connecticut R At Interstate 391 Bridge At Holyoke
4,390 cfs
Gauge stage 5.23 ft
Biggest 24h spike
Deerfield River At Charlemont
+282%
Now 932 cfs
Network coverage
Gauges + rivers tracked
78 + 0
USGS gauges feeding 0 named rivers in Massachusetts.
Full streamgauge inventory
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
6 hours ago · USGS 01172010 |
4,010 cfs | 5.07 ft | · | 84°F | 43 ft | Middle Connecticut |
|
Connecticut River At Montague City, Ma
7 hours ago · USGS 01170500 |
3,720 cfs | 7.59 ft | · | 83°F | 111 ft | Middle Connecticut |
|
Merrimack River Bl Concord River At Lowell, Ma
6 hours ago · USGS 01100000 |
1,560 cfs | 41.80 ft | · | 82°F | 50 ft | Merrimack |
|
Deerfield River Near West Deerfield, Ma
6 hours ago · USGS 01170000 |
1,050 cfs | 3.03 ft | · | 81°F | 157 ft | Deerfield |
|
Neponset River At Milton Village, Ma
7 hours ago · USGS 011055566 |
620 cfs | 1.43 ft | · | 83°F | 5 ft | Charles |
|
Deerfield River At Charlemont, Ma
6 hours ago · USGS 01168500 |
534 cfs | 2.60 ft | · | 78°F | 517 ft | Deerfield |
|
Chicopee River At Indian Orchard, Ma
7 hours ago · USGS 01177000 |
246 cfs | 4.16 ft | · | 84°F | 126 ft | Chicopee |
|
Housatonic River Nr Ashley Falls, Ma
7 hours ago · USGS 01198125 |
208 cfs | 1.86 ft | · | 82°F | 646 ft | Housatonic |
|
Housatonic River Near Great Barrington, Ma
6 hours ago · USGS 01197500 |
142 cfs | 1.84 ft | · | 81°F | 693 ft | Housatonic |
|
Westfield River Near Westfield, Ma
7 hours ago · USGS 01183500 |
107 cfs | 3.04 ft | · | 84°F | 140 ft | Westfield |
|
Concord R Below R Meadow Brook, Ma
6 hours ago · USGS 01099500 |
106 cfs | 4.04 ft | · | 82°F | 67 ft | Merrimack |
|
Millers River At Erving, Ma
7 hours ago · USGS 01166500 |
85 cfs | 1.66 ft | · | 81°F | 378 ft | Miller |
|
Nashua River At East Pepperell, Ma
6 hours ago · USGS 01096500 |
85 cfs | · | · | 82°F | 165 ft | Nashua |
|
Taunton River Near Bridgewater, Ma
6 hours ago · USGS 01108000 |
72 cfs | 3.12 ft | 62°F | 84°F | 10 ft | Narragansett |
|
Hoosic River Near Williamstown, Ma
7 hours ago · USGS 01332500 |
71 cfs | 5.34 ft | · | 79°F | 618 ft | Hudson-Hoosic |
|
Sudbury River At Saxonville, Ma
4 hours ago · USGS 01098530 |
68 cfs | 5.00 ft | · | 83°F | 116 ft | Concord |
|
Charles River At Dover, Ma
6 hours ago · USGS 01103500 |
65 cfs | · | · | 84°F | 93 ft | Charles |
|
Quaboag River At West Brimfield, Ma
7 hours ago · USGS 01176000 |
53 cfs | 2.64 ft | · | 81°F | 388 ft | Chicopee |
|
Charles River At Waltham, Ma
6 hours ago · USGS 01104500 |
53 cfs | · | · | 84°F | 16 ft | Charles |
|
Ware River At Gibbs Crossing, Ma
6 hours ago · USGS 01173500 |
50 cfs | 2.01 ft | · | 81°F | 380 ft | Chicopee |
|
Westfield River At Knightville, Ma
6 hours ago · USGS 01179500 |
49 cfs | 2.70 ft | · | 80°F | 464 ft | Westfield |
|
Swift River At West Ware, Ma
7 hours ago · USGS 01175500 |
49 cfs | 2.19 ft | · | 81°F | 370 ft | Chicopee |
|
Blackstone River, Ma
7 hours ago · USGS 01109730 |
45 cfs | 1.60 ft | · | 81°F | 382 ft | Blackstone |
|
Charles River At Wellesley, Ma
6 hours ago · USGS 01104200 |
45 cfs | 2.84 ft | · | 84°F | 67 ft | Charles |
|
North Nashua River Near Leominster, Ma
7 hours ago · USGS 01094500 |
42 cfs | 1.98 ft | · | 82°F | 274 ft | Nashua |
|
Quinebaug R Bl Westville Dam Nr Southbridge, Ma
6 hours ago · USGS 01123600 |
37 cfs | 3.39 ft | · | 80°F | 513 ft | Quinebaug |
|
Hoosic River At Adams, Ma
6 hours ago · USGS 01331500 |
34 cfs | 5.77 ft | · | 80°F | 831 ft | Hudson-Hoosic |
|
Assabet River At Maynard, Ma
7 hours ago · USGS 01097000 |
27 cfs | 1.41 ft | · | 83°F | 154 ft | Concord |
|
Ipswich River Near Ipswich, Ma
7 hours ago · USGS 01102000 |
27 cfs | 2.91 ft | · | 81°F | 21 ft | Charles |
|
Neponset River At Greenlodge St Near Canton, Ma
6 hours ago · USGS 01105554 |
26 cfs | 6.64 ft | · | 83°F | 46 ft | Charles |
|
North River At Shattuckville, Ma
6 hours ago · USGS 01169000 |
25 cfs | 1.27 ft | · | 79°F | 459 ft | Deerfield |
|
Stony Brook At Rt 20 At Waltham, Ma
6 hours ago · USGS 01104460 |
23 cfs | 5.26 ft | 74°F | 84°F | 87 ft | Charles |
|
Mother Brook At Dedham, Ma
7 hours ago · USGS 01104000 |
23 cfs | 80.43 ft | · | 84°F | 87 ft | Charles |
|
Quinebaug R Bl E Brimfield Dam At Fiskdale, Ma
6 hours ago · USGS 01123360 |
23 cfs | 2.31 ft | · | 80°F | 614 ft | Quinebaug |
|
Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma
6 hours ago · USGS 01104430 |
22 cfs | 1.26 ft | 77°F | 84°F | 145 ft | Charles |
|
East Branch Housatonic River At Coltsville, Ma
6 hours ago · USGS 01197000 |
22 cfs | · | · | 79°F | 996 ft | Housatonic |
|
West Branch Farmington River Near New Boston, Ma
6 hours ago · USGS 01185500 |
21 cfs | 2.24 ft | · | 80°F | 776 ft | Farmington |
|
West Branch Westfield River At Huntington, Ma
6 hours ago · USGS 01181000 |
20 cfs | 3.01 ft | · | 80°F | 391 ft | Westfield |
|
Quashnet River At Waquoit Village, Ma
7 hours ago · USGS 011058837 |
20 cfs | 2.26 ft | · | 79°F | 3 ft | Cape Cod |
|
Charles River At Medway, Ma
6 hours ago · USGS 01103280 |
19 cfs | · | · | 83°F | 129 ft | Charles |
|
Green River At Williamstown, Ma
7 hours ago · USGS 01333000 |
19 cfs | 1.55 ft | · | 80°F | 614 ft | Hudson-Hoosic |
|
Threemile River At North Dighton, Ma
7 hours ago · USGS 01109060 |
18 cfs | 2.31 ft | · | 84°F | 12 ft | Narragansett |
|
Ware River At Intake Works Near Barre, Ma
7 hours ago · USGS 01173000 |
16 cfs | 3.15 ft | 73°F | 80°F | 639 ft | Chicopee |
|
Paskamanset River Near South Dartmouth, Ma
7 hours ago · USGS 01105933 |
15 cfs | 8.61 ft | · | 80°F | 29 ft | Cape Cod |
|
Green River Near Great Barrington, Ma
6 hours ago · USGS 01198000 |
14 cfs | · | · | 82°F | 694 ft | Housatonic |
|
Green River Near Colrain, Ma
7 hours ago · USGS 01170100 |
12 cfs | 2.51 ft | 45°F | 80°F | 436 ft | Deerfield |
|
Squannacook River Near West Groton, Ma
7 hours ago · USGS 01096000 |
11 cfs | 1.42 ft | · | 81°F | 246 ft | Nashua |
|
Otter River At Otter River, Ma
7 hours ago · USGS 01163200 |
10 cfs | · | · | 79°F | 901 ft | Miller |
|
Jones River At Kingston, Ma
7 hours ago · USGS 01105870 |
10 cfs | 2.89 ft | · | 82°F | 8 ft | Cape Cod |
|
Shawsheen River Near Wilmington, Ma
6 hours ago · USGS 01100600 |
10 cfs | 2.09 ft | · | 83°F | 95 ft | Merrimack |
|
Mill River At Northampton, Ma
7 hours ago · USGS 01171500 |
9 cfs | 5.39 ft | · | 83°F | 205 ft | Middle Connecticut |
|
North Nashua River At Fitchburg, Ma
6 hours ago · USGS 01094400 |
9 cfs | 2.12 ft | · | 81°F | 399 ft | Nashua |
|
Indian Head River At Hanover, Ma
6 hours ago · USGS 01105730 |
8 cfs | 1.32 ft | · | 82°F | 8 ft | Cape Cod |
|
South River Near Conway, Ma
7 hours ago · USGS 01169900 |
8 cfs | 1.36 ft | · | 81°F | 456 ft | Deerfield |
|
Millers River Near Winchendon, Ma
7 hours ago · USGS 01162000 |
7 cfs | 3.73 ft | · | 78°F | 834 ft | Miller |
|
Wading River Near Norton, Ma
7 hours ago · USGS 01109000 |
7 cfs | 5.13 ft | · | 84°F | 63 ft | Narragansett |
|
Neponset River At Norwood, Ma
7 hours ago · USGS 01105000 |
7 cfs | 5.66 ft | · | 84°F | 51 ft | Charles |
|
Quinsigamond River At North Grafton, Ma
7 hours ago · USGS 01110000 |
7 cfs | · | · | 82°F | 349 ft | Blackstone |
|
Ware River Near Barre, Ma
7 hours ago · USGS 01172500 |
6 cfs | 2.32 ft | · | 80°F | 738 ft | Chicopee |
|
Aberjona River At Winchester, Ma
7 hours ago · USGS 01102500 |
5 cfs | 6.93 ft | · | 84°F | 14 ft | Charles |
|
East Branch Neponset River At Canton, Ma
7 hours ago · USGS 01105500 |
5 cfs | · | 79°F | 84°F | 80 ft | Charles |
|
Ipswich River At South Middleton, Ma
6 hours ago · USGS 01101500 |
5 cfs | 1.97 ft | · | 82°F | 49 ft | Charles |
|
Saugus R At Saugus Iron Works At Saugus, Ma
6 hours ago · USGS 01102345 |
4 cfs | 1.25 ft | · | 83°F | 14 ft | Charles |
|
Stillwater River Near Sterling, Ma
6 hours ago · USGS 01095220 |
4 cfs | 3.83 ft | 67°F | 81°F | 403 ft | Nashua |
|
Quinapoxet River At Canada Mills Near Holden, Ma
6 hours ago · USGS 01095375 |
3 cfs | 6.31 ft | 68°F | 80°F | 569 ft | Nashua |
|
East Branch Swift River Near Hardwick, Ma
6 hours ago · USGS 01174500 |
3 cfs | 19.31 ft | · | 80°F | 520 ft | Chicopee |
|
Herring River At North Harwich, Ma
6 hours ago · USGS 01105880 |
3 cfs | 1.89 ft | · | 78°F | 21 ft | Cape Cod |
|
Priest Brook Near Winchendon, Ma
6 hours ago · USGS 01162500 |
2 cfs | 2.30 ft | · | 79°F | 852 ft | Miller |
|
Lake Cochituate Outlet At Framingham, Ma
7 hours ago · USGS 01098500 |
2 cfs | 1.22 ft | · | 84°F | 129 ft | Concord |
|
Parker River At Byfield, Ma
6 hours ago · USGS 01101000 |
2 cfs | · | · | 81°F | 25 ft | Charles |
|
West Branch Swift River Near Shutesbury, Ma
7 hours ago · USGS 01174565 |
2 cfs | 1.07 ft | · | 80°F | 536 ft | Chicopee |
|
Nashoba Brook Near Acton, Ma
6 hours ago · USGS 01097300 |
2 cfs | 3.34 ft | · | 82°F | 155 ft | Concord |
|
Whitmans Pond, Ma
7 hours ago · USGS 01105606 |
1 cfs | 71.84 ft | · | 83°F | 75 ft | Charles |
|
Whitmans Pond Fish Ladder At East Weymouth, Ma
6 hours ago · USGS 01105608 |
1 cfs | 31.31 ft | · | 83°F | 52 ft | Charles |
|
Old Swamp River Near South Weymouth, Ma
7 hours ago · USGS 01105600 |
0 cfs | 2.42 ft | · | 83°F | 87 ft | Cape Cod |
|
Sevenmile River Near Spencer, Ma
6 hours ago · USGS 01175670 |
0 cfs | 9.11 ft | · | 80°F | 650 ft | Chicopee |
|
Segreganset River Near Dighton, Ma
6 hours ago · USGS 01109070 |
0 cfs | 1.59 ft | · | 84°F | 36 ft | Narragansett |
|
Stony Brook Reservoir At Dam Near Waltham, Ma
6 hours ago · USGS 01104480 |
0 cfs | · | 36°F | 84°F | 62 ft | Charles |
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Flow report FAQ
About Massachusetts streamflow
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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