Llano River level at Llano
Texas · Paddling & whitewater
Measured at USGS 08151500 — Llano Rv at Llano, TX · NWS forecast point LLAT2
Reading taken · as of 1 hour ago
Up — bigger, pushier water than average
At 227 CFS, this gauge is running 189% of normal for mid-September — above the 120 CFS median USGS has recorded for this date across 86 years of record (1939–2026).
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Flood stages at Llano
National Weather Service categories for gauge LLAT2, WFO EWX. Impact wording is the NWS's own, verbatim.
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Major flood 23.0 ft
- 23.0 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.
- 26.0 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.
- 30.0 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.
- 32.0 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.
- 36.0 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.
- 38.0 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.
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Moderate flood 12.0 ft
- 12.0 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.
- 16.0 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.
- 20.0 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.
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Minor flood 10.0 ft
- 10.0 ft Minor lowland flooding can swamp boats in the lower Llano River in Kingsland.
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Action 10.0 ft
- 10.0 ft Minor lowland flooding can swamp boats in the lower Llano River in Kingsland.
- Right now 1.94 ft
Flow history at Llano
Daily values from USGS 08151500, updated every 15 to 60 minutes; NWS forecast for LLAT2 reissued through the day. Provisional.
Highest crests on record at Llano
12 on record
| Stage | Flow | Date |
|---|---|---|
| 41.50 ft | 380,000 CFS | Jun 14, 1935 |
| 40.14 ft | 278,000 CFS | Oct 16, 2018 |
| 39.10 ft | 260,000 CFS | Jun 23, 1997 |
| 32.60 ft | 232,000 CFS | Sep 10, 1952 |
| 28.65 ft | — | Nov 4, 2000 |
| 27.07 ft | 132,000 CFS | Jul 4, 2025 |
| 22.07 ft | 88,215 CFS | Nov 17, 2004 |
| 20.51 ft | 83,700 CFS | Feb 4, 1992 |
| 20.50 ft | 75,916 CFS | Jun 27, 2007 |
| 20.30 ft | — | Jul 16, 2026 |
Crests published by the National Weather Service.
About Llano River at Llano
In Texas — the reading paddlers, anglers and outfitters here check before committing to a shuttle. Castell slabs are flow-critical; 2018 flood history.
Llano River at Llano — common questions
3 questions
How fast can Llano River at Llano come up?
Fast. It is free-flowing, so rain upstream moves it directly. Several feet in a few hours is normal after a heavy storm.
Is Llano River at Llano high or low for this time of year?
The USGS median flow for mid-September here is 120 CFS, from 86 years of record (1939–2026). Today is 189% of it. The comparison is what makes the raw number mean anything: the same reading is a drought on one river and a flood on another.
How often does this reading update?
USGS transmits from gauge 08151500 every 15 to 60 minutes, and the National Weather Service reissues the flood forecast for LLAT2 a few times a day — more often when the river is rising. This page refreshes from both when you open it. The timestamp is in the gauge's local time.