San Antonio River near Falls City, TX
River level and flood forecast · Karnes County
Normal0.9 ftas of Mon 3:15 PM
The river is 11.1 ft below flood stage (12 ft).
Flow: 181 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 | 20 ft |
| Moderate flood stage | 16 ft |
| Flood stage | 12 ft |
| Action stage | 6 ft |
| Record crest (July 6, 2002) | 38.43 ft |
What floods at each level
From the National Weather Service, highest first.
- 37 ftTwenty to thirty homes in Falls City are flooded. Major flooding severely damages oil field tank batteries and pump jacks, irrigation pumps, crops and pastureland. Hundreds of livestock can be isolated and drowned. Roads and bridges are severely flooded and dangerous to motorists.
- 35 ftTen to fifteen homes in Falls City are flooded. Major flooding severely damages oil field tank batteries and pump jacks, irrigation pumps, crops and pastureland. Hundreds of livestock can be isolated and drowned. Roads and bridges are severely flooded and dangerous to motorists.
- 32 ftMajor flooding severely damages oil field tank batteries and pump jacks, irrigation pumps, crops and pastureland. Hundreds of livestock can be isolated and drowned. Roads and bridges are severely flooded and dangerous to motorists. Six homes in Falls City are flooded up to four feet.
- 28 ftMajor floodng severely damages oil field pump jacks and tank batteries, irrigation pumps, crops and pastureland and can isolate and drown hundreds of livestock in the flood plain. Lowest homes in the flood plain in Falls City are threatened.
- 24 ftThere is major lowland flooding of crop and pasture land below San Antonio to the Guadalupe River confluence. Livestock in flood prone areas are cut off and potentially drowned. Irrigation pumps and equipment flood severely. Nearly all of Goliad State Park downstream is under water. The levee system downstream near the confluence of the San Antonio and Guadalupe Rivers is threatened.
- 20 ftMajor flooding damages crop and pastureland, irrigation pumps, oil field pump jacks and any equipment in the flood plain. Livestock in flood prone areas are cut off and potentially drowned. Secondary roads and low bridges are flooded near the river and very dangerous.
- 16 ftFlooding significantly damages irrigation pumps, oil field pump jacks and tank batteries and equipment. Livestock in flood prone areas are cut off and potentially drowned. There is significant damage to crop lands in season.
- 12 ftMinor lowland flooding above Falls City to above Goliad floods irrigation pumps, equipment, crops and pastureland. Livestock can be cut off in low areas of the flood plain.
- 10 ftOverbank conditions extend into low areas of the flood plain with no significant damage.
Highest crests on record
- 38.43 ft — July 6, 2002
- 33.8 ft — September 29, 1946
- 33.6 ft — October 20, 1998
- 30.13 ft — July 4, 2002
- 28.4 ft — October 28, 1913
Recent crests: 15.45 ft (June 5, 2016) · 11.7 ft (May 26, 2015) · 13.09 ft (May 15, 2015) · 17.11 ft (May 28, 2013) · 26.59 ft (July 22, 2007)
Up and down the river, and nearby
- UpstreamSan Antonio River near Floresville, TX
- DownstreamSan Antonio River at SH 72 near Runge, TX
- Cibolo Creek near Falls City, TX
- Atascosa River near McCoy, TX
- Cibolo Creek at Sutherland Springs, TX
- San Antonio River at Elmendorf, TX
- Atascosa River at Whitsett, TX
- Atascosa River at FM 476 near Pleasanton, TX
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (FACT2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.