Rising River Levels Prompt Flood Warnings Across South Texas
Residents across parts of South Texas are being urged to stay alert as Flood Warnings remain in effect for several locations along the Nueces and Frio Rivers. Rising water levels are creating potential flooding hazards near riverbanks, low-water crossings, rural roads, and flood-prone areas.
The warnings include locations affecting:
- Dimmit County
- La Salle County
- McMullen County
- Live Oak County
- Frio County
River flooding can continue to worsen even after rainfall ends as runoff from upstream areas continues moving through the watershed.
Nueces River Flood Warnings
Nueces River Near Asherton — Dimmit County
A Flood Warning remains in effect for the Nueces River near Asherton in Dimmit County as elevated river levels create concerns along the surrounding floodplain.
Potential impacts include:
- Flooding of low-lying areas near the river
- Water covering rural access roads and crossings
- Impacts to agricultural areas and nearby properties
Residents living near the Nueces River should monitor water levels and remain prepared for changing conditions.
Nueces River at Cotulla — La Salle County
The Nueces River at Cotulla in La Salle County is also under a Flood Warning due to rising river levels.
Areas near the river may experience:
- Flooded low-water crossings
- Rising water along river access points
- Flooding near floodplain locations
- Hazardous travel conditions in rural areas
Drivers should avoid flooded roadways, as water depth and current strength can be difficult to judge.
Frio River Flood Warnings
Frio River at Tilden — McMullen and Live Oak Counties
A Flood Warning remains in effect for the Frio River at Tilden, impacting portions of McMullen and Live Oak Counties.
Rising water along the Frio River may lead to:
- Flooding near the river channel
- Impacts to ranchland and agricultural areas
- Dangerous conditions near recreational areas
- Flooded crossings and access roads
Residents and visitors near the river should use caution as conditions can change quickly.
Frio River Near Derby — Frio County
A Flood Warning is in effect for the Frio River near Derby in Frio County as river levels rise.
Possible impacts include:
- Flooding along the Frio River floodplain
- Water affecting nearby low-lying areas
- Hazardous conditions near crossings and roads
- Potential impacts to rural properties and agricultural operations
Residents near the river should continue monitoring official updates and be prepared for additional rises.
Why River Flooding Can Remain Dangerous
River flooding often develops after rainfall as water drains from upstream areas into rivers and streams. Even when storms move away, rivers can continue rising due to delayed runoff.
Floodwaters can be extremely dangerous because:
- Water depth can be misleading
- Currents can sweep vehicles away
- Roads may be damaged or washed out
- Conditions can change rapidly
Flood Safety Information
During a Flood Warning:
✅ Avoid driving through flooded roads
✅ Never cross flooded low-water crossings
✅ Move vehicles, livestock, and equipment away from rising water
✅ Stay away from fast-moving water
✅ Monitor updates from the National Weather Service
Turn Around, Don’t Drown. Just a few inches of moving water can create dangerous driving conditions.
Areas Impacted by Flood Warnings
🚨 Nueces River near Asherton — Dimmit County
🚨 Nueces River at Cotulla — La Salle County
🚨 Frio River at Tilden — McMullen & Live Oak Counties
🚨 Frio River near Derby — Frio County
Stay weather aware as river levels continue to fluctuate across South Texas. Continue monitoring Radar Watch HQ for the latest flood alerts, river conditions, and severe weather updates.

Affiliate Disclosure: As an Amazon Associate, Radar Watch HQ earns from qualifying purchases.
Radar Watch HQ Top 5 Essential Emergency Preparedness Picks
Whether you’re preparing for severe thunderstorms, flash flooding, hurricanes, wildfires, or extended power outages, these five emergency essentials can help keep your household safer when severe weather strikes.
A portable power station provides reliable backup electricity during outages, allowing you to power phones, medical devices, laptops, lights, small appliances, and communication equipment without fuel.
Best for:
- Extended power outages
- Severe thunderstorms
- Hurricanes
- Winter storms
- Wildfires
2. Flood Protection Barriers & Sandless Flood Bags
Flood barriers help divert or absorb water before it enters garages, doorways, and low-lying areas. They deploy quickly and can help reduce property damage during flash flooding.
Best for:
- Flash Flood Warnings
- Heavy rainfall
- River flooding
- Coastal flooding
3. Rechargeable LED Flashlights
Bright, dependable flashlights are essential when the power goes out. Rechargeable or solar-powered models provide long-lasting illumination for navigating safely indoors and outdoors.
Best for:
- Overnight power outages
- Emergency evacuations
- Storm damage inspections
Keep phones, tablets, weather radios, and USB-powered devices charged when the electrical grid is unavailable. A solar power bank offers an additional charging option during prolonged emergencies.
Best for:
- Communication during outages
- Emergency weather alerts
- Travel and evacuation
A NOAA Weather Radio delivers official weather alerts directly from the National Weather Service, even when cellular networks or internet service are unavailable. It remains one of the most dependable ways to receive life-saving warnings.
Best for:
- Tornado warnings
- Severe thunderstorm warnings
- Flash flood warnings
- Hurricane alerts
- Winter storm emergencies
Why Radar Watch HQ Recommends These Essentials
At Radar Watch HQ, preparedness is just as important as staying informed. These five emergency essentials can help you stay connected, protect your property, and safely navigate severe weather events. Having supplies ready before storms arrive allows you to respond quickly when warnings are issued and conditions begin to deteriorate.
