Pedernales River at Johnson City
Texas — Water Level & Flood Stage
Located in Blanco County, Texas on the Pedernales River. Live water level data from USGS gauge 08153500, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
19 ft
Moderate Flood
17 ft
Minor Flood
14 ft
Action Stage
13 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
40 ft
Flow reaches the slab elevation of the lowest homes in the Pedernales River flood plain near Johnson City, the rodeo grounds and the south approach of Highway 281. An RV park just below Highway 281 has up to six feet of water over the lowest sites. Widespread lowland flooding can cut off and drown hundreds of livestock. Much of Pedernales Falls State Park floods.
37 ft
Several feet of turbulent water is flowing through low areas of an RV park below Highway 281 on the right bank. Many roads and bridges in the flood plain are life threatening. Fencing and roads are damaged or destroyed. Much of Pedernales Falls State Park is flooded.
34 ft
Flow is to the lowest trailer sites of an RV park just below Highway 281 near Johnson City. Hundreds of cattle can be cut off and drowned in the flood plain. Low areas of Pedernales Falls State Park downstream flood. Roads and bridges near the river are extremely dangerous. Flow is approaching the rodeo grounds. Near the USGS 1:100 year flood level.
30 ft
Flow is within four feet of an RV park in the northeast part of Johnson City just below Highway 281 on the left bank. Lowest camp sites are at thirty four feet gauge height. Hundreds of livestock in the flood plain can be cut off and drowned. Roads and low bridges near the river flood. Low sections of Pedernales Falls State Park downstream are under turbulent water and very dangerous. Exceeds the USGS 1:50 year flood.
28 ft
Secondary and primary roads and bridges are severely flooded in the flood plain. Fencing and roads are damaged or destroyed. Low areas of Pedernales State Park downstream are severely flooded. Exceeds USGS 1:25 year flood.
25 ft
Extensive damage occurs to roads, bridges, fences and signs in the flood plain below Stonewall to Lake Travis. Lower sections of Pedernales Falls State Park flood. Roads and low bridges near the river are flooded and dangerous to motorists. Exceeds USGS 1:10 year flood.
22 ft
Secondary roads, bridges and crossings are dangerously flooded near the Pedernales River. Low areas of Pedernales Falls State Park are flooded and dangerous. Fencing and roads are damaged or destroyed in the flood plain.
19 ft
Major flooding makes secondary and primary roads below Stonewall to Lake Travis very dangerous. Low park areas downstream in Pedernales Falls State Park flood.
17 ft
Moderate lowland flooding makes secondary roads, bridges and low crossings very dangerous. Swimmers and recreationists should move from the flood plain downstream in Pedernales Falls State Park. Near the USGS 1:2 year flood.
14 ft
Minor lowland flooding reaches secondary roads, crossings and low bridges. Low areas of LBJ National Park upstream are flooded. Swimmers and recreationists should leave the river downstream in Pedernales Falls State Park.
13 ft
Low water crossings upstream flood.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Sep 10, 1952 | 42.5 ft | 441,000 cfs |
| Sep 10, 1952 | 42.5 ft | 441,000 cfs |
| Jul 2, 1869 | 33 ft | — |
| Jul 2, 1869 | 33 ft | — |
| Aug 29, 1944 | 26.1 ft | — |
About This Gauge
USGS Site
NWS LID
JOCT2
River
Pedernales River
County
Blanco, TX
Coordinates
30.2917°N, 98.3992°W
Get Flood Alerts for Pedernales 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 Pedernales River at Johnson City?
The Pedernales River at Johnson City gauge is maintained by USGS (site 08153500) 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 Pedernales River at Johnson City?
The NWS-defined flood stage for Pedernales River at Johnson City is 14 feet. Action stage begins at 13 feet. Moderate flooding starts at 17 feet, and major flooding at 19 feet.
How do I get alerts when Pedernales River rises?
Download StormCast free on Google Play, go to River Gauges, and add Pedernales River at Johnson City 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 Pedernales River at Johnson City gauge located?
The gauge is located in Blanco County, Texas at coordinates 30.2917°N, 98.3992°W. USGS site number: 08153500. Data is provided by the U.S. Geological Survey and the National Weather Service.
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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.