NEW JERSEY FLOW REPORT

Last Updated: December 21, 2025

New Jersey's river systems are showing varied streamflow conditions, with both above and below-normal flows detected across the state. Notably, the Delaware River at Montague reports a streamflow of 9,650 cubic feet per second (cfs), marking a significant 24-hour increase of 103.59 cfs and positioning it at 5.33% above normal. In contrast, the Delaware River at Trenton is experiencing decreased flow at 11,000 cfs, which is 35.78% below its normal range, despite a 52.57 cfs rise in the last day. Additionally, water enthusiasts should be aware of the Delaware River at Belvidere, exhibiting a notable rise of 141.25 cfs, now flowing at 13,100 cfs, which is 13.75% above normal, potentially affecting local whitewater conditions. The Assunpink Creek and South Branch Rancocas Creek near Trenton are also experiencing lower flows, which may impact local ecosystems and recreational activities.

Among other streams, the Whippany River near Pine Brook is showing an exceptional increase, with 55.99% more flow than average, which could be of interest to whitewater enthusiasts. However, the South Branch Raritan River at Stanton and North Branch Raritan River near Raritan have seen significant decreases in flow, with measurements indicating they are 57.12% and 51.3% below their normal levels, respectively, pointing to potential flow droughts. Cities like Trenton, Montague, and Belvidere may experience impacts from these variations in streamflow. The Musconetcong River near Bloomsbury and the Passaic River system, including areas near Millington, Chatham, and Little Falls, are also showing fluctuations that could influence local waterways and water-related activities. These streams and rivers are vital for local water supplies, ecosystems, and recreational use, and the current trends underscore the importance of monitoring streamflow for both conservation efforts and the enjoyment of New Jersey's waterways.