Lehigh River at Walnutport, PA
River level and flood forecast · Northampton County
Normal3.6 ftas of Mon 4:30 PM
The river is 4.4 ft below flood stage (8 ft).
Forecast to fall to 2.8 ft by Thu, Oct 15, 2 PM.
Flow: 2,740 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 3:01 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 16 ft |
| Moderate flood stage | 12 ft |
| Flood stage | 8 ft |
| Action stage | 7.5 ft |
| Record crest (May 23, 1942) | 20.6 ft |
What floods at each level
From the National Weather Service, highest first.
- 13 ftFlooding begins just downstream from the Slatington Walnutport Bridge.
- 6 ftMinor flooding begins downstream at Catasaqua and Hokendaqua.
Highest crests on record
- 20.6 ft — May 23, 1942
- 17.68 ft — August 19, 1955
- 13.19 ft — September 2, 2021
- 12.72 ft — March 11, 2011
- 12.66 ft — December 4, 1950
Recent crests: 9.2 ft (January 10, 2024) · 9.01 ft (December 18, 2023) · 13.19 ft (September 2, 2021) · 9.18 ft (August 23, 2021) · 9.4 ft (December 25, 2020)
Up and down the river, and nearby
- UpstreamLehigh River at Lehighton, PA
- DownstreamLehigh River at Bethlehem, PA
- Pohopoco Creek below Beltzville Lake at Parryville, PA
- Jordan Creek at Allentown, PA
- Little Lehigh Creek at Allentown, PA
- Little Lehigh Creek near Allentown, PA
- Spring Creek (PA) at Trexlertown, PA
- Little Lehigh Creek near Trexlertown, PA
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (WNTP1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.