Coginchaug River Flow Today
As of October 2, 2026 at 4:00 AM, the Coginchaug River is flowing at 185 cfs at Middlefield, CT and down 31% in 24 hours. ❤ Favorite
Coginchaug River map
See the Coginchaug River on a live map
Every gauge, dam and paddle run on the river, one tap each:
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Coginchaug 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 Middlefield, the Coginchaug River is running 185 cfs, down 31% since yesterday.
In the last 24 hours the river is dropping at Middlefield (-31%).
How the Coginchaug 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
- Middlefield147 ft 185 cfs
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.
Coginchaug River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | Elevation |
|---|---|---|---|---|---|
|
Coginchaug River At Middlefield CT
Oct 2, 4:00 AM · USGS 01192883 |
185 cfs | · | -31% | 6.65 ft | 147 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 Coginchaug River
Releases from these dams shape the flow downstream. Tap one for its daily level and history.
Coginchaug River streamflow over time
Daily total flow across every monitored gauge on the river (this total last updated earlier; the live gauge readings above are current).
Coginchaug River
The Coginchaug River is a 20.2-mile-long river in Connecticut, USA. It was important in the development of colonial New England, as it was used for transportation and agriculture. The river is fed by multiple small streams and flows through several towns, including Durham, Middletown, and Middlefield, before joining the Mattabesset River. The river's hydrology has been affected by several reservoirs and dams, including the Powder Hill Reservoir, the Beseck Lake Reservoir, and the Coginchaug Reservoir, which were built in the early 20th century to provide water for Middletown and surrounding towns. These reservoirs also provide opportunities for recreational activities such as fishing, boating, and hiking. The Coginchaug River has also been important for agriculture, as it provides irrigation water for nearby farms.
Fishing near the Coginchaug River
About the Coginchaug River
How is the Coginchaug River flowing right now?
As of October 2, 2026, the Coginchaug River is flowing at 185 cfs at Middlefield, CT. Every gauge’s live reading is in the table above.
Is the Coginchaug River running high or low?
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.
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.