San Jacinto River near Sheldon, TX
River level and flood forecast · Harris County
The river is 8.2 ft below flood stage (10 ft).
Forecast to rise to 3.4 ft Wed 7 AM, below the 10 ft flood stage.
Flow: 1,130 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 7:58 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 15 ft |
| Moderate flood stage | 13 ft |
| Flood stage | 10 ft |
| Action stage | 8 ft |
| Record crest (August 29, 2017) | 28.72 ft |
What floods at each level
From the National Weather Service, highest first.
- 15 ftMajor lowland flooding begins.
- 13 ftModerate lowland flooding begins with widespread inundation of the flood plain.
- 10 ftMinor lowland flooding begins.
Highest crests on record
- 28.72 ft — August 29, 2017
- 28.07 ft — October 19, 1994
- 21.1 ft — June 15, 1973
- 21.08 ft — May 19, 1989
- 20.85 ft — November 15, 1998
Recent crests: 19.72 ft (May 4, 2024) · 19.37 ft (September 20, 2019) · 10.45 ft (May 8, 2019) · 28.72 ft (August 29, 2017) · 19.33 ft (May 30, 2016)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SHLT2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.