Pedernales River at Fredericksburg

1. 40.00 ftMajor flooding of primary and secondary roads and bridges in the headwaters above Fredericksburg is very dangerous. The bridge floor of Highway 87 floods. Hundreds of livstock are cut off and potentially drowned Major flooding downstream in LBJ National Park damages the Junction School House, the Jordan House, fencing, signs and roads.
2. 37.00 ftFlow reaches the slab elevation of the lowest buildings below the gauge and the south approach to the Highway 87 bridge. Secondary and primary roads and bridges flood in the headwaters above Fredericksburg. Major flooding downstream in LBJ National Park near Stonewall damages buildings, signs, fencing and roads. Hundreds of livestock are cut off and potentially drowned.
3. 36.00 ftMajor flooding is near the USGS 1:25 year level. Lowest buildings near Highway 87 are threatened as well as the Highway 87 bridge approaches. Major damage occurs downsteam at LBJ National Park to signs, fences, roads and the Junction School. Widepread scouring of roads and bridges occurs from the headwaters to below Stonewall.
4. 32.00 ftWidespread major flooding of secondary and primary roads, low bridges and crossings in the headwaters above Fredericksburg make them very dangerous. Destructive flooding at LBJ National Park downstream will be ten feet over the Park Road 49 bridge at LBJ National Park. Many park signs and fences are destroyed and park roads damaged. This flow exceeds the USGS 1:10 year flood level.
5. 29.00 ftModerate lowland flooding inundates secondary roads and bridges from the headwaters above Harper to below Stonewall. Fences and signs are destroyed in LBJ National Park at Stonewall as flow is well into the flood plain and many feet over the Park Road 49 bridge.
6. 27.00 ftModerate lowland flooding is near the USGS 1:5 year level. Secondary roads and bridges from the headwaters above Harper to below Stonewall are flooded and dangerous. Significant damage to fences, signs, and roads occurs downstream in LBJ National Park near Stonewall.
7. 25.00 ftModerate lowland flooding covers many secondary roads and bridges from the headwaters to Stonewall making them very dangerous to motorists. Low areas of LBJ National Park and the Park Road 49 bridge are flooded.
8. 22.00 ftMinor lowland flooding floods secondary roads and bridges from the headwaters downstream to below LBJ National Park. The Park Road 49 bridge in LBJ National Park floods. Fencing and signs are damaged in LBJ National Park.
9. 16.60 ftFlow exceeds the banks and is near the USGS 1:2 year level.
10. 15.00 ftFlow exceeds banks into lowest areas of the flood plain.
11. 12.00 ftFlow exceeds lowest areas of the banks.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Most recent crests

• July 16, 2026: 35.59 ft
• July 4, 2025: 14.80 ft
• July 23, 2024: 10.02 ft
• June 16, 2023: 10.75 ft
• May 1, 2021: 13.80 ft
• May 28, 2020: 14.21 ft
• October 16, 2018: 22.59 ft
• May 29, 2016: 14.88 ft
• May 25, 2015: 11.72 ft
• August 17, 2007: 31.70 ft

• DownstreamPedernales River at Johnson City
• Pedernales River
• Guadalupe River at Comfort
• Guadalupe River at Kerrville
• Guadalupe River at Centerpoint
• Guadalupe River at Bear Creek at Kerrville
• Blanco River at Crabapple Road
• Sandy Creek at Willow City
• Guadalupe River at FM474 near Bergheim

Forecasts by the West Gulf River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. 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.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.