East Branch Perkiomen Creek at Schwenksville, PA
River level and flood forecast · Montgomery County
Normal3.3 ftas of Mon 5:15 PM
The river is 4.7 ft below flood stage (8 ft).
Flow: 169 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 | 12 ft |
| Moderate flood stage | 10 ft |
| Flood stage | 8 ft |
| Action stage | 7 ft |
| Record crest (September 2, 2021) | 16.89 ft |
What floods at each level
From the National Weather Service, highest first.
- 12 ftGroff's Mill Road in Lower Salford is impassable. Homes between the river and the road take on water.
- 10 ftGroff's mill Road begins to flood and is subject to closures.
- 8 ftBergey's Mill Park in Lower Salford begins to flood. The access road in and out of the park floods.
- 7 ftAdjacent fields begin to flood in Lower Salford.
Highest crests on record
- 16.89 ft — September 2, 2021
- 14.03 ft — September 16, 1999
- 13.24 ft — August 4, 2020
- 13.21 ft — October 19, 1996
- 12.97 ft — January 19, 1996
Recent crests: 10.17 ft (January 10, 2024) · 8.8 ft (December 28, 2023) · 9.56 ft (December 18, 2023) · 16.89 ft (September 2, 2021) · 9.67 ft (December 25, 2020)
Up and down the river, and nearby
- Perkiomen Creek at Graterford, PA
- West Branch Perkiomen Creek at Hillegass, PA
- Perkiomen Creek at East Greenville, PA
- Schuylkill River at Norristown, PA
- Schuylkill River at Pottstown, PA
- Valley Creek at PA Turnpike Bridge near Valley Forge, PA
- Little Lehigh Creek near Trexlertown, PA
- Spring Creek (PA) at Trexlertown, PA
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SWVP1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.