About this river
Susquehanna River is a 44.6 mile river near Fish on the Fly in Pennsylvania. Streamflow is measured at the USGS gauge Susquehanna River at Marietta, PA (site 01576000). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1932 to 2026
Susquehanna River typically runs highest in April, at a median 65,200 cfs, and lowest in September, at 7,910 cfs. The highest flow on record for any single day is 1,040,000 cfs, in 1972.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 28,500 | 16,600 to 52,000 | |
| February | 30,900 | 18,600 to 53,800 | |
| March | 59,800 | 39,600 to 93,400 | |
| April | 65,200 | 44,200 to 96,000 | |
| May | 40,700 | 25,100 to 62,800 | |
| June | 21,200 | 13,600 to 31,750 | |
| July | 12,300 | 8,120 to 19,800 | |
| August | 9,320 | 6,010 to 15,700 | |
| September | 7,910 | 5,210 to 15,000 | |
| October | 9,650 | 6,010 to 19,300 | |
| November | 21,800 | 11,600 to 35,500 | |
| December | 31,300 | 18,000 to 52,900 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 94 years of record. Statistics published by the US Geological Survey for Susquehanna River at Marietta, PA (site 01576000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Susquehanna River. Ramp data comes from the USGS national boat-ramp inventory.
- Dorsey ParkSusquehanna RiverPublic
- Cold Cabin ParkSusquehanna RiverPublic
- Muddy CreekSusquehanna RiverPublic
- Gamblers Boatyard and CampgroundSusquehanna RiverRestricted
- York FurnaceSusquehanna RiverPublic
- PequeaPequea CreekPublic
- PequaaSusquehanna RiverPublic
- William Kain County Park - Lake RedmanEast Branch Codorus Creek - Lake RedmanPublic
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Susquehanna River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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