River stage
Graterford, Perkiomen Creek
- River level
- 1.95 ft
- Status
- Below flood stage
- 7-day change
- +0.82 ft
- Recent high
- 3.43 ft
- Recent low
- 1.05 ft
Last reported 2026-10-13 | NWS GRAP1
- 30-day change
- +0.76 ft
- Average
- 1.35 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 24.23 ft
In brief
The Perkiomen Creek at Graterford, PA read 1.95 ft on Oct 13, 2026, 6.05 ft below action stage. That is 0.76 ft higher than 30 days earlier.
Source: National Weather Service gauge GRAP1
Water 66 °F (19 °C) · 6 °F warmer than normal for this date · +2 °F in 24 hours
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 24.23 ft | 2021-09-02 |
| 2 | 19.32 ft | 2020-08-05 |
| 3 | 18.26 ft | 1935-07-09 |
| 4 | 18.20 ft | 2011-08-28 |
| 5 | 17.08 ft | 1972-06-22 |
| 6 | 16.65 ft | 1933-08-23 |
| 7 | 16.59 ft | 1999-09-16 |
| 8 | 16.45 ft | 1996-01-19 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 8.00 ft
Park Avenue in Schwenksville is flooded. The Perkiomen Trail is flooded in Perkiomen Township at Plank Road and Route 113.
- 11.00 ft
Graterford Road and Penitentiary Bridge are closed due to flooding.
- 12.00 ft
Portions of Central Perkiomen Park in Collegeville are flooded. Flood waters expand onto and to the west of First Avenue in Collegeville.
- 13.00 ft
First Avenue in Collegeville becomes impassable.
- 14.00 ft
Storm sewers back up in Collegeville and flood Route 29.
- 15.00 ft
East Main Street in Collegeville floods.
- 16.00 ft
Collegeville businesses on Route 29, between East Ninth Avenue and East Main Street, begin to take on water.
- 18.00 ft
Smaller tributaries are affected by high water from the Perkiomen. Flooding is possible near the Route 113 Bridge in Perkiomen Township.
- 19.00 ft
The Schwenksville Sewer and Water Plant floods as does Route 73/Haldeman Road.
Written by the local National Weather Service forecast office for this exact gauge.
Trout stocking on the Perkiomen Creek
PFBC's 2026 spring schedule lists 3 trout releases on the Perkiomen Creek, 0 fish in total, the first in March. Rainbow trout and Golden rainbow trout.
| Species | Fish | When |
|---|---|---|
| Rainbow trout | — | March 2026 |
| Golden rainbow trout | — | March 2026 |
| Rainbow trout | — | April 2026 |
PFBC lists a week or a month rather than a date, and notes that actual stocking can differ with fish availability and weather. Full Pennsylvania stocking schedule →
Frequently asked questions
Is the Perkiomen Creek flooding at Graterford?
No. The Perkiomen Creek at Graterford is at 1.95 ft, 6.05 ft below action stage.
What is the flood stage at Graterford?
The National Weather Service sets action stage 8 ft, minor flooding 11 ft, moderate flooding 13 ft and major flooding 16 ft.
What is the highest the Perkiomen Creek has been at Graterford?
The highest crest on record is 24.23 ft, on 2021-09-02.
Is the Perkiomen Creek high or low right now at Graterford?
At 1.95 ft it is higher than 93% of readings over the last 122 days.
How warm is the water at Graterford, Perkiomen Creek?
The water temperature at Graterford, Perkiomen Creek is 66 °F (18.7 °C), measured 7:15 pm by USGS, which is 6 °F warmer than normal for this date over the past ten years. It has risen 2.4 °F in the last 24 hours.
Stage and flood information from the NOAA National Weather Service (gauge GRAP1); daily history from the U.S. Geological Survey (site 01473000). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.