Llano River at Llano
Texas — Water Level & Flood Stage
Located in Llano County, Texas on the Llano River. Live water level data from USGS gauge 08151500, updated every 15 minutes.
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
Flood Stages
Major Flood
23 ft
Moderate Flood
12 ft
Minor Flood
10 ft
Action Stage
10 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
38 ft
Robinson City Park in Llano will flood. Many homes in Scotts Acres on south side of Llano will be severely damaged and lowest mobile homes destroyed in water up to 6 feet, some washing downstream. Many homes near Castell to below Llano will be damaged. The FM 2900 bridge in Kingsland will flood. Much of Kingsland Lodge in Kingsland will be destroyed. Many homes downstream in Marble Falls will flood as flow backs up Backbone Creek.
36 ft
Disastrous life threatening flooding will damage numerous homes and businesses above Castell to Lake LBJ. Numerous resorts at and below Kingsland near the Llano River mouth will flood severely. Boats, docks and any gear that isn't removed from the river will be destroyed. Lower homes on Lake Travis flood severely. Flow exceeds the USGS 1:50 year flood level.
32 ft
Disastrous flooding well into the flood plain will cut off and potentially drown thousands of livestock. Homes, resorts, commercial buildings, boats, docks and marinas will flood disastrously above Castell to Marble Falls on Lake LBJ. Roads and bridges near the river will be severely flooded and dangerous to motorists. Exceeds the USGS 1:25 year flood.
30 ft
Disastrous flooding will reach lowest residences below Castell to below Llano. Flow will be to the slab of the city of Llano water treatment plant on the right bank just above Highway 16. Numerous resorts at Kingsland and in Lake LBJ will have severe flood damage. Boats, docks and facilities lining the lower Llano and Lake LBJ near Kingsland may be severely damaged or destroyed.
26 ft
Major flooding will threaten lowest homes from upstream near Castell to below Llano. Major damage will occur downsteam in Kingsland to boats and docks. Secondary and primary roads and bridges in the flood plain will be extremely dangerous to motorists. Lowest homes and businesses in the Highland Lakes below Kingsland will be flooded.
23 ft
Major lowland flooding makes primary and secondary roads and low bridges near the river and tributaries dangerous. Boats and docks are severely inundated downstream near and in Kingsland. Lowest resorts near the Llano River mouth in Kingsland flood.
20 ft
Flow will be damaging to docks and boats downstream in Kingsland. The lowest secondary roads and bridges will be severely flooded and dangerous. Near the USGS 1:5 year flood level.
16 ft
Moderate lowland flooding threatens docks and boats in the flood plain downstream in Kingsland. Secondary roads and bridges will be flooded and dangerous to motorists. Flow exceeds the USGS 1:2 year flood level.
12 ft
Moderate lowland flooding makes secondary roads and low bridges in the flood plain dangerous to motorists including the low water crossing of Ranch Road 3404/Slab Road near Kingsland. Equipment should be moved from low docks and boat ties loosened downstream in Kingsland.
10 ft
Minor lowland flooding can swamp boats in the lower Llano River in Kingsland.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jun 13, 1935 | 41.5 ft | 380,000 cfs |
| Jun 13, 1935 | 41.5 ft | 380,000 cfs |
| Oct 16, 2018 | 40.17 ft | 278,000 cfs |
| Oct 16, 2018 | 40.17 ft | 278,000 cfs |
| Oct 16, 2018 | 40.04 ft | 276,545 cfs |
About This Gauge
Get Flood Alerts for Llano River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Llano River at Llano?
The Llano River at Llano gauge is maintained by USGS (site 08151500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Llano River at Llano?
The NWS-defined flood stage for Llano River at Llano is 10 feet. Action stage begins at 10 feet. Moderate flooding starts at 12 feet, and major flooding at 23 feet.
How do I get alerts when Llano River rises?
Download StormCast free on Google Play, go to River Gauges, and add Llano River at Llano to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Llano River at Llano gauge located?
The gauge is located in Llano County, Texas at coordinates 30.7511°N, 98.6694°W. USGS site number: 08151500. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Llano River
On This River
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.