US Streamflow

River Levels

Last Updated: April 14, 2026

Total streamflow across the Susquehanna River was last observed at 275,970 cfs, and is expected to yield approximately 547,380 acre-ft of water today; about 71% of normal. Average streamflow for this time of year is 391,236 cfs, with recent peaks last observed on 2011-09-09 when daily discharge volume was observed at 3,832,200 cfs.

Maximum discharge along the river is currently at the Susquehanna River At Marietta reporting a streamflow rate of 47,400 cfs. This is also the highest stage along the Susquehanna River, with a gauge stage of 38.06 ft at this location. This river is monitored from 16 different streamgauging stations along the Susquehanna River, the highest being situated at an altitude of 979 ft, the Susquehanna River At Unadilla Ny.

The Susquehanna River, located in the northeastern United States, stretches for 444 miles from its source in upstate New York to the Chesapeake Bay.

15-Day Long Term Forecast

River Details

Last Updated	2026-04-14
Discharge Volume	547,380 ACRE-FT
Streamflow	275,970.0 cfs Past 24 Hours: -58170.0 cfs (-17.41%)
Percent of Normal	70.54%
Maximum	3,832,200.0 cfs 2011-09-09
Seasonal Avg	391,236 cfs

River Streamflow Levels

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Streamgauge	Streamflow	Gauge Stage	24hr Change (%)
Susquehanna River At Unadilla Ny USGS 01500500	2550 cfs	5.15 ft	-7.61
Susquehanna River At Bainbridge Ny USGS 01502632	3890 cfs	5.23 ft	-8.04
Susquehanna River At Windsor Ny USGS 01502731	4570 cfs	6.58 ft	-7.49
Susquehanna River At Conklin Ny USGS 01503000	5000 cfs	5.4 ft	-7.58
Susquehanna River At Vestal Ny USGS 01513500	8920 cfs	7.59 ft	-8.98
Susquehanna River At Owego Ny USGS 01513831	9140 cfs	16.49 ft	-8.6
Susquehanna River Near Waverly Ny USGS 01515000	10200 cfs	4.64 ft	-8.93
Susquehanna River At Towanda USGS 01531500	14200 cfs	3.51 ft	-12.35
Susquehanna River At Meshoppen USGS 01533400	16500 cfs	12.94 ft	-11.29
Susquehanna River At Wilkes-Barre USGS 01536500	18200 cfs	5.85 ft	-10.34
Susquehanna River At Bloomsburg USGS 01538700	20100 cfs	5.6 ft	-10.67
Susquehanna River At Danville USGS 01540500	21900 cfs	6.85 ft	-10.25
Susquehanna River At Sunbury USGS 01554000	36700 cfs	10.74 ft	-9.61
Susquehanna River At Harrisburg USGS 01570500	44000 cfs	5.4 ft	-10.93
Susquehanna River At Marietta USGS 01576000	47400 cfs	38.06 ft	-9.71
Susquehanna River At Conowingo USGS 01578310	12700 cfs	10.8 ft	-69.25

Seasonal Discharge Comparison

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Maximum Streamflow Discharge

Streamflow Elevation Profile

The Susquehanna River (; Lenape: Siskëwahane) is a major river located in the northeastern and mid-Atlantic United States. At 444 miles (715 km) long, it is the longest river on the East Coast of the United States that drains into the Atlantic Ocean. With its watershed, it is the 16th-largest river in the United States, and the longest river in the early 21st-century continental United States without commercial boat traffic.
The Susquehanna River forms from two main branches: the "North Branch", which rises in Cooperstown, New York, and is regarded by federal mapmakers as the main branch or headwaters, and the West Branch, which rises in western Pennsylvania and joins the main branch near Northumberland in central Pennsylvania.
The river drains 27,500 square miles (71,000 km2), including nearly half of the land area of Pennsylvania. The drainage basin (watershed) includes portions of the Allegheny Plateau region of the Appalachian Mountains, cutting through a succession of water gaps in a broad zigzag course to flow across the rural heartland of southeastern Pennsylvania and northeastern Maryland in the lateral near-parallel array of mountain ridges. The river empties into the northern end of the Chesapeake Bay at Perryville and Havre de Grace, Maryland, providing half of the Bay's freshwater inflow. The Chesapeake Bay is the ria of the Susquehanna.

SNOFLO^®

Susquehanna River

Last Updated: April 14, 2026

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15-Day Long Term Forecast

River Details