Little Lehigh Creek near Allentown, PA
River level and flood forecast · Lehigh County
Normal0.7 ftas of Mon 4:30 PM
The river is 4.3 ft below flood stage (5 ft).
Flow: 123 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 10 ft |
| Moderate flood stage | 8 ft |
| Flood stage | 5 ft |
| Action stage | 4 ft |
| Record crest (August 4, 2020) | 12.76 ft |
What floods at each level
From the National Weather Service, highest first.
- 7 ftSignificant flooding occurs on both Millcreek Road and Macungie Road in Lower Macungie Township. The roads are impassable with several feet of moving water.
- 5.5 ftMillcreek Road at Hauser Road, Wild Cherry Lane, and Macungie Road in Lower Macungie Township begin to flood.
- 5 ftSpring Creek Road in Lower Macungie Township begins to flood between Millcreek Road and Millcreek Road. Spring Creek Road in Lower Macungie begins to flood between Heather Road and Laurel Lane. Creamery Road and Mill Race Road in Macungie Township also flood. Road closures and detours are put in place.
- 4 ftWater begins to overflow the lowest banks of the Little Lehigh and into designated open field and floodplain. Portions of the Millbrook Farms Recreation Area, the Danfield Run Passive Recreation Area, and the Winding Brook Manor Recreational Area begin to flood.
Highest crests on record
- 12.76 ft — August 4, 2020
- 11.8 ft — June 22, 1972
- 10.93 ft — October 8, 2005
- 10.7600002288818 ft — January 25, 1979
- 10.63 ft — September 18, 2004
Recent crests: 7.72 ft (January 10, 2024) · 5.83 ft (December 28, 2023) · 6.23 ft (December 18, 2023) · 9.82 ft (September 2, 2021) · 5.29 ft (December 25, 2020)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (ALLP1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.