Llano River at Llano, TX
River level and flood forecast · Llano County
Normal2.4 ftas of Mon 2 PM
The river is 7.6 ft below flood stage (10 ft).
Flow: 380 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sat, Oct 3, 1:44 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 23 ft |
| Moderate flood stage | 12 ft |
| Flood stage | 10 ft |
| Action stage | 10 ft |
| Record crest (June 14, 1935) | 41.5 ft |
What floods at each level
From the National Weather Service, highest first.
- 38 ftRobinson 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 ftDisastrous 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 ftDisastrous 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 ftDisastrous 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 ftMajor 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 ftMajor 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 ftFlow 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 ftModerate 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 ftModerate 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 ftMinor lowland flooding can swamp boats in the lower Llano River in Kingsland.
Highest crests on record
- 41.5 ft — June 14, 1935
- 40.14 ft — October 16, 2018
- 39.1 ft — June 23, 1997
- 32.6 ft — September 10, 1952
- 28.65 ft — November 4, 2000
Recent crests: 20.3 ft (July 16, 2026) · 27.07 ft (July 4, 2025) · 17.39 ft (July 23, 2024) · 4.06 ft (May 21, 2023) · 6.91 ft (September 1, 2022)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (LLAT2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.