Pedernales River near Johnson City
No floodingUSGS 08153500 · NWS JOCT2 · Blanco County
5.1cfs
Gage height
10.23 ft
Share of gauged inflow
3%
Streamflow · past 7 days
15-minute instantaneous discharge · USGS · provisional and subject to revision
NWS flood stages
Forecasts are issued routinely year-round.
Historic crests
- Sep 11, 195242.50 ft441,000 cfs
- Jul 3, 186933.00 ft
- Aug 30, 194426.10 ft
- Oct 4, 195926.10 ft
- Jul 4, 200226.00 ft105,000 cfs
- Jun 22, 199725.16 ft94,900 cfs
- Aug 3, 197824.90 ft127,000 cfs
- Apr 24, 195724.80 ft
What floods at each stage
National Weather Service impact statements for this gauge, lowest stage first.
13 ftLow water crossings upstream flood.›
Low water crossings upstream flood.
14 ftMinor 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.›
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.
17 ftModerate 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.›
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.
19 ftMajor flooding makes secondary and primary roads below Stonewall to Lake Travis very dangerous. Low park areas downstream in Pedernales Falls State Park flood.›
Major flooding makes secondary and primary roads below Stonewall to Lake Travis very dangerous. Low park areas downstream in Pedernales Falls State Park flood.
22 ftSecondary 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.›
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.
25 ftExtensive 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.›
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.
28 ftSecondary 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.›
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.
30 ftFlow 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.›
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.
34 ftFlow 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.›
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.
37 ftSeveral 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.›
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.
40 ftFlow 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.›
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.