Naugatuck River Flow Today
As of October 3, 2026 at 3:30 AM, the Naugatuck River is flowing at 241 cfs at Beacon Falls, CT — 210% of normal for the date and down 16% in 24 hours. 2 of 2 USGS gauges reported in the last 3 days; flows range from 45 to 241 cfs. ❤ Favorite
Naugatuck River map
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Naugatuck River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Beacon Falls, the Naugatuck River is running 241 cfs — 210% of normal, down 16% since yesterday. Along the river, 2 of 2 reporting gauges are above normal (the typical gauge is at 199% of normal).
In the last 24 hours the river is dropping at Thomaston (-19%) and Beacon Falls (-16%).
How the Naugatuck River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Thomaston378 ft 45 cfs187%
- Beacon Falls148 ft 241 cfs210%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Naugatuck River streamgauge, placed by its own percent of normal. The line is the typical gauge (199%).
Naugatuck River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | To flood stage | Elevation |
|---|---|---|---|---|---|---|
|
Naugatuck River At Thomaston CT
Oct 3, 3:30 AM · USGS 01206900 |
45 cfs | 187% | -19% | 1.87 ft | · | 378 ft |
|
Naugatuck River At Beacon Falls CT
Oct 3, 3:30 AM · USGS 01208500 |
241 cfs | 210% | -16% | 1.79 ft | 10.2 ft below | 148 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Dams & reservoirs on the Naugatuck River
Releases from these dams shape the flow downstream. Tap one for its daily level and history.
Naugatuck River streamflow over time
Daily total flow across every monitored gauge on the river.
Maximum streamflow by year
Naugatuck River
The Naugatuck River is a 40-mile-long river that flows through western Connecticut. It has a rich history, having been used for transportation and industry since colonial times. The river rises in Torrington and flows through several towns, including Waterbury and Naugatuck, before emptying into the Housatonic River in Derby. The river's hydrology has been modified by numerous dams and reservoirs, including the Thomaston Dam and the Shepaug Dam. These structures have created recreational opportunities, such as fishing and boating. Additionally, the river provides water for agricultural purposes, including irrigation and livestock watering. Despite its industrial past, the Naugatuck River has undergone significant cleanup efforts in recent years to improve water quality and restore its natural habitat for fish and wildlife.
Fishing near the Naugatuck River
About the Naugatuck River
How is the Naugatuck River flowing right now?
As of October 3, 2026, the Naugatuck River is flowing at 241 cfs at Beacon Falls, CT, about 210% of normal for the date. Across its 2 USGS gauges, current flows range from 45 to 241 cfs. Every gauge’s live reading is in the table above.
Is the Naugatuck River running high or low?
The typical gauge on the Naugatuck River is at 199% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
What is flood stage on the Naugatuck River?
The National Weather Service sets flood stages for Beacon Falls (12.0 ft). The table shows how far each gauge is below its flood stage right now.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.