Souhegan River

Streamflow Hydrology Weather


Souhegan River Levels

May 4 2024

936 ACRE-FT

Discharge Volume Today
-86.0 cfs (-15.41%) since yesterday
54.57% of normal Low

Total streamflow across the Souhegan River was last observed at 472 cfs, and is expected to yield approximately 936 acre-ft of water today; about 55% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 865 cfs, with recent peaks last observed on 2023-12-19 when daily discharge volume was observed at 6,040 cfs.

Maximum discharge along the river is currently at the Souhegan River At Merrimack reporting a streamflow rate of 287 cfs. However, the streamgauge with the highest stage along the river is the Souhegan River (Site Wlr-1) Near Milford with a gauge stage of 4.22 ft. This river is monitored from 2 different streamgauging stations along the Souhegan River, the highest being situated at an altitude of 275 ft, the Souhegan River (Site Wlr-1) Near Milford.

Last Updated 2024-05-04
Streamflow 472.0 cfs
Percent of Normal 54.57%
Maximum 6,040.0 cfs
2023-12-19

About the souhegan river


The Souhegan River is a 33-mile-long river in southern New Hampshire that flows from its headwaters in the town of New Ipswich to its confluence with the Merrimack River in the town of Merrimack. The river has a rich history, once powering a variety of mills and factories. Today, the river is used primarily for recreation, including fishing, kayaking, and swimming. The river is also an important source of water for agricultural activities, particularly in the communities of Milford and Wilton. The river is dammed in several locations, including the Pennichuck Brook Dam in Nashua, the Wilton Dam in Wilton, and the Merrimack Village Dam in Merrimack, which impound the water to create reservoirs for drinking water and hydroelectric power generation. Despite its industrial past, the Souhegan River remains an important natural resource for the region.

Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Souhegan River (Site Wlr-1) Near Milford
USGS 01093852
185 cfs 4.22 ft -15.14
Souhegan River At Merrimack
USGS 01094000
287 cfs 3.41 ft -15.59

Peak Annual Discharge

Souhegan River Maximum Total Discharge

Seasonal Comparison

Souhegan River Year Over Year Discharge


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