Nueces River at Mathis, TX
River level and flood forecast · San Patricio County
Normal1.2 ftas of Mon 2 PM
The river is 23.8 ft below flood stage (25 ft).
Flow: 47 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 28 ft |
| Moderate flood stage | 26 ft |
| Flood stage | 25 ft |
| Action stage | 16 ft |
| Record crest (September 24, 1967) | 48.7 ft |
What floods at each level
From the National Weather Service, highest first.
- 48.7 ftFlood of record - Septemeber 24, 1967 - remnants of Hurricane Beulah (138,000 cfs).
- 43.5 ftMassive life threatening flooding occurs, and severely damages residential areas below Bluntzer to Calallen. Major flooding of the flood plain below Lake Corpus Christi to below Bluntzer, floods roads and bridges near the river. Livestock are cut off and potentially drowned. Just below the dam, water is over the Highway 359 bridge around the right end.
- 29.34 ftMajor lowland flooding occurs, causing widespread evacuations downstream above Calallen. The west bank residents below Bluntzer may be cut off for several weeks.
- 28 ftMajor lowland flooding occurs, causing widespread evacuations downstream above Calallen. The west bank residents below Bluntzer may be cut off for 4 to 6 weeks.
- 27 ftFlow moves into a secondary channel, 700 feet left of main channel, resulting in two channels. These channels merge at 43.5 feet.
- 26 ftModerate lowland flooding occurs. Many homes downstream between Bluntzer and Calallan become flooded, with residents possibly cut off for weeks.
- 25 ftMinor lowland flooding occurs. Flow escapes secondary banks of the main channel. There is widespread flooding of the flood plain downstream, between Bluntzer and Calallen, cutting off many homes and residential areas for days and possibly weeks.
- 20 ftOverbank conditions continue. Residents downstream near Bluntzer may become isolated.
- 17 ftMany homes in flood prone areas downstream above Calallen are cut off and surrounded by water.
- 16 ftThe river reaches bankfull stage. Short peak releases will flood homes near Calallen.
- 13 ftSustained flow will isolate homes downstream near Calallen.
- 12 ftFlow cuts off the lowest homes downstream above Calallen.
Highest crests on record
- 48.7 ft — September 24, 1967
- 41 ft — September 20, 1919
- 39.03 ft — September 16, 2002
- 38.38 ft — July 12, 1942
- 38.12 ft — July 17, 2002
Recent crests: 5.88 ft (October 2, 2021) · 12.47 ft (July 9, 2021) · 7.49 ft (June 4, 2021) · 4.56 ft (September 10, 2020) · 28.09 ft (November 1, 2018)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MTBT2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.