Thompson Run at Turtle Creek, PA
River level and flood forecast · Allegheny County
Normal1.0 ftas of Mon 3:30 PM
The river is 5.0 ft below flood stage (6 ft).
Flow: 53 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 | 11 ft |
| Moderate flood stage | 9 ft |
| Flood stage | 6 ft |
| Action stage | 4.5 ft |
| Record crest (June 18, 2009) | 11.34 ft |
What floods at each level
From the National Weather Service, highest first.
- 12 ftWater reaches Tri-Boro Bridge roadway.
- 11.34 ftWater reaches the record flooding observed June 18, 2009.
- 9 ftWater reaches the bottom of the steel superstructure under the Tri-Boro bridge.
- 8.23 ftWater reaches the flooding that occured during Hurricane Ivan on September 17, 2004.
- 5.57 ftWater reaches the level that occurred June 5, 2010.
- 5.5 ftFlooding begins on Church streat near intersection wth Railroad Street.
Highest crests on record
- 11.34 ft — June 18, 2009
- 8.23 ft — September 17, 2004
- 6.96 ft — July 22, 2019
- 6.24 ft — July 22, 2019
- 5.98 ft — July 11, 2019
Recent crests: 6.24 ft (July 22, 2019) · 6.96 ft (July 22, 2019) · 5.98 ft (July 11, 2019) · 5.57 ft (June 5, 2010) · 11.34 ft (June 18, 2009)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (TTKP1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.