Rivers in Pennsylvania
Susquehanna River at Marietta
Below flood stage
35.67ftStage
Observed Mon, Sep 28, 5:30 AM EDT
- Flood stage
- 49.00 ft
- Forecast crest
- 35.80 ftMon, Sep 28, 8:00 AM EDT
- Record crest
- 64.54 ft1972
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 54.00 ft |
| Moderate flood | 52.00 ft |
| Minor flood | 49.00 ft |
| Action | 44.00 ft |
- 64.00 ftWidespread flooding on both banks affects homes, businesses, and the water and sewage plants.
- 59.00 ftWidespread flooding occurs on both sides of the river. Many homes and businesses are affected by high water. The Wrightsville water supply is affected by flood waters.
- 56.00 ftWidespread flooding occurs on both sides of the river. Many homes and businesses are affected.
- 54.00 ftNumerous homes and businesses in the Columbia and Wrightsville areas are affected by high water. The Wilton Company in Wrightsville experiences problems with high water.
- 52.00 ftA number of residences in the Wrightsville and Columbia areas begin to be affected.
- 49.00 ftFront Street in Wrightsville floods. Low lying areas of route 624 on the right, or west bank and along route 441 on the left, or east bank are also affected. Riverside recreation area is also inundated.
- 47.00 ftLow lying undeveloped areas on both banks are inundated. A couple of roadways are closed.
- 44.00 ftThe right, or west bank overflows. Some roadways are affected.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 10% |
| Moderate flooding | 6% |
| Major flooding | 6% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
38 crests on NOAA’s list since 1889.
| # | Date | Stage |
|---|---|---|
| 1 | June 23, 1972 | 64.54 ft |
| 2 | March 19, 1936 | 60.73 ft |
| 3 | June 2, 1889 | 58.30 ft |
| 4 | September 9, 2011 | 58.16 ft |
| 5 | January 21, 1996 | 56.80 ft |
| 6 | September 19, 2004 | 56.27 ft |
| 7 | September 27, 1975 | 55.73 ft |
| 8 | May 29, 1946 | 54.90 ft |
| 9 | March 12, 1964 | 54.03 ft |
| 10 | February 16, 1984 | 53.49 ft |
| 11 | April 2, 1940 | 53.33 ft |
| 12 | April 3, 1993 | 53.22 ft |
| 13 | March 7, 1979 | 53.21 ft |
| 14 | January 1, 1943 | 53.20 ft |
| 15 | November 27, 1950 | 52.96 ft |
| 16 | March 12, 2011 | 52.86 ft |
| 17 | June 29, 2006 | 52.53 ft |
| 18 | February 27, 1961 | 51.82 ft |
| 19 | April 4, 2005 | 51.71 ft |
| 20 | March 16, 1986 | 51.52 ft |
| 21 | April 2, 1960 | 51.31 ft |
| 22 | April 29, 2011 | 51.15 ft |
| 23 | March 26, 1994 | 51.01 ft |
| 24 | July 26, 2018 | 50.93 ft |
| 25 | April 4, 1970 | 50.47 ft |
Most recent crests
- December 27, 2020: 49.61 ft
- July 26, 2018: 50.93 ft
- September 9, 2011: 58.16 ft
- April 29, 2011: 51.15 ft
- March 12, 2011: 52.86 ft
- June 29, 2006: 52.53 ft
- April 4, 2005: 51.71 ft
- March 30, 2005: 50.25 ft
- January 16, 2005: 49.10 ft
- September 19, 2004: 56.27 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Middle Atlantic River Forecast Center. Forecasts are issued routinely year-round. Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.