CONNECTICUT FLOW REPORT
Last Updated: December 20, 2025
The state of Connecticut is experiencing a mix of hydrologic conditions across its river systems, presenting varied implications for water enthusiasts and environmental managers. The Connecticut River at Middle Haddam reports a streamflow of 21,300 cubic feet per second (cfs), which is lower than average for this time of year, indicated by a -19.62% from the norm. However, a significant increase in water level has been noted in the last 24 hours, with a 29.88% rise, signaling the need for vigilance for water-based activities and potential impacts on surrounding communities. Notably, the North Branch Park River at Hartford has shown an extraordinary rise in streamflow change, skyrocketing to 1968.38% above the normal rate, suggesting a situation that could lead to flooding and affecting water recreation areas and urban settings. In contrast, the Salmon River near East Hampton has seen a massive 592.14% increase in streamflow, yet remains at a healthy 94.69% of its normal level, which may be ideal for whitewater activities if conditions remain stable.
In addition to these observations, the Housatonic River shows variability with the site at Stevenson undergoing a 697.87 cfs increase, though remaining below the normal flow rate by -16.7%. This could potentially affect downstream conditions in areas like Gaylordsville, where the current streamflow is also reduced by -17.14%. The Quinnipiac River at Wallingford and Southington has witnessed substantial upward changes in the last day, 611.99% and 1331.67% respectively, which could translate to swift currents and high water for local river runners. These figures illustrate the dynamic and rapidly changing water conditions across Connecticut's rivers, emphasizing the importance of real-time data for safe and enjoyable river use. River users and nearby residents should stay updated on local water conditions and heed any advisories from state environmental agencies, particularly when planning to engage with Connecticut's waterways for recreation or other purposes.
Connecticut has two main watersheds: the Connecticut River that flows from the northern border down to Long Island Sound, and the Housatonic River that flows from the western border before emptying into Long Island Sound. There are several large reservoirs and dams in the state, including the Barkhamsted Reservoir and Colebrook River Lake. Climate conditions in Connecticut vary from warm and humid summers to cold and snowy winters, which directly impact snowpack and streamflow. Additionally, Connecticut is susceptible to hurricanes and tropical storms, which can cause significant flooding. Connecticut's hydrology is highly influenced by the state's relatively small size, densely populated urban areas, and topography. The state's major rivers and tributaries are closely monitored by the USGS for water quality and quantity.
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