SNOFLO



SUSQUEHANNA RIVER

RIVER LEVELS
April 11, 2025

Fire Weather Watch
2025-04-12T20:00:00-06:00

* AFFECTED AREA...Fire Weather Zones 214, 216, 238, 239, 241, 242, 243, 246 and 247. * TIMING...From Saturday afternoon through Saturday evening. * WINDS...Southwest 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.


Total streamflow across the Susquehanna River was last observed at 312,110 cfs, and is expected to yield approximately 619,063 acre-ft of water today; about 68% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 461,759 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 Conowingo reporting a streamflow rate of 62,600 cfs. However, the streamgauge with the highest stage along the river is the Susquehanna River At Marietta with a gauge stage of 38.62 ft. 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.

Last Updated 2025-04-11
Discharge Volume 619,063 ACRE-FT
Streamflow 312,110.0 cfs
-30500.0 cfs (-8.9%)
Percent of Normal 67.59%
Maximum 3,832,200.0 cfs
2011-09-09
Seasonal Avg 461,759 cfs
       
River Streamflow Levels
Created with Highcharts 8.0.0Total River Discharge (cfs)2. Apr3. Apr4. Apr5. Apr6. Apr7. Apr8. Apr9. Apr10. Apr11. Apr0200k400k
Seasonal Discharge Comparison
Created with Highcharts 8.0.0Total River Discharge (cfs)1. Jan1. Feb1. Mar1. Apr1. May1. Jun1. Jul1. Aug1. Sep1. Oct1. Nov1. Dec1. Jan01M2M
Maximum Streamflow Discharge
Created with Highcharts 8.0.0YearAnnual Peak Discharge(cfs)20102011201220132014201520162017201820192020202120222023202420252026400k1M2M4M10M

Weather Forecast

Streamflow Elevation Profile
Created with Highcharts 8.0.0

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.