Rivers in Pennsylvania
Lehigh River at Walnutport
Below flood stage
2.40ftStage
Observed Wed, Sep 23, 6:30 AM EDT
- Flood stage
- 8.00 ft
- Forecast crest
- 2.50 ftWed, Sep 23, 8:00 AM EDT
- Record crest
- 20.60 ft1942
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 16.00 ft |
| Moderate flood | 12.00 ft |
| Minor flood | 8.00 ft |
| Action | 7.50 ft |
- 13.00 ftFlooding begins just downstream from the Slatington Walnutport Bridge.
- 6.00 ftMinor flooding begins downstream at Catasaqua and Hokendaqua.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 28% |
| Moderate flooding | 7% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
32 crests on NOAA’s list since 1942.
| # | Date | Stage |
|---|---|---|
| 1 | May 23, 1942 | 20.60 ft |
| 2 | August 19, 1955 | 17.68 ft |
| 3 | September 2, 2021 | 13.19 ft |
| 4 | March 11, 2011 | 12.72 ft |
| 5 | December 4, 1950 | 12.66 ft |
| 6 | June 28, 2006 | 12.49 ft |
| 7 | January 19, 1996 | 12.32 ft |
| 8 | September 18, 2004 | 12.30 ft |
| 9 | June 23, 1972 | 11.65 ft |
| 10 | January 27, 1996 | 11.52 ft |
| 11 | December 21, 1957 | 11.35 ft |
| 12 | April 16, 1983 | 11.28 ft |
| 13 | November 22, 1952 | 10.97 ft |
| 14 | September 13, 1987 | 10.56 ft |
| 15 | April 3, 2005 | 10.49 ft |
| 16 | May 6, 1989 | 9.84 ft |
| 17 | April 11, 1993 | 9.49 ft |
| 18 | December 2, 1996 | 9.47 ft |
| 19 | December 25, 2020 | 9.40 ft |
| 20 | September 23, 2003 | 9.39 ft |
| 21 | November 28, 1993 | 9.27 ft |
| 22 | January 10, 2024 | 9.20 ft |
| 23 | August 23, 2021 | 9.18 ft |
| 24 | December 14, 1983 | 9.16 ft |
| 25 | October 1, 2010 | 9.10 ft |
Most recent crests
- January 10, 2024: 9.20 ft
- December 18, 2023: 9.01 ft
- September 2, 2021: 13.19 ft
- August 23, 2021: 9.18 ft
- December 25, 2020: 9.40 ft
- September 9, 2011: 8.80 ft
- August 28, 2011: 7.23 ft
- March 11, 2011: 12.72 ft
- October 1, 2010: 9.10 ft
- June 28, 2006: 12.49 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. The above river forecast includes future rainfall. Forecast stages may be different if the rainfall does not occur.
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.