Lake Austin water level today
On Oct 28, 2026, Lake Austin is at 492.27 ft, 96.5% full (0.53 ft below full pool). That is 1.1 points above normal for this date.
Source: Texas Water Development Board · storage 23,143 of 23,972 acre-ft · provisional data
Lake Austin percent full history
Percent full Normal range (10th–90th percentile, 1996–2025) Average
Records and key dates
- Record high
- 100.0%Mar 1, 1970
- Record low
- 20.2%Jan 23, 1986
- 12-month high
- 98.7%Jan 2, 2026
- 12-month low
- 94.4%May 8, 2026
- Last time full
- Mar 12, 2015
- Change in 1 year
- +0.16 ft+1.0 pts
About Lake Austin
- River basin
- Colorado
- Full pool (top of conservation pool)
- 492.80 ft
- Conservation capacity
- 23,972 acre-ft
- Surface area today
- 1,549 acres
- Dead pool elevation
- 462.00 ft
- Flood control reservoir
- No
- Data since
- Jan 1, 1966
Monthly average, last 10 years
Average percent full each month.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 97% | 97% | 96% | 97% | 96% | 96% | 96% | 96% | 97% | 96% | — | — |
| 2025 | 96% | 97% | 96% | 96% | 96% | 96% | 96% | 96% | 96% | 96% | 96% | 97% |
| 2024 | 96% | 96% | 95% | 96% | 95% | 96% | 95% | 96% | 96% | 96% | 96% | 96% |
| 2023 | 96% | 96% | 95% | 96% | 96% | 96% | 96% | 96% | 96% | 96% | 96% | 96% |
| 2022 | 95% | 96% | 95% | 96% | 96% | 96% | 95% | 96% | 96% | 96% | 96% | 96% |
| 2021 | 95% | 95% | 96% | 96% | 96% | 96% | 95% | 96% | 95% | 96% | 96% | 96% |
| 2020 | 94% | 94% | 94% | 95% | 96% | 96% | 95% | 95% | 96% | 95% | 96% | 96% |
| 2019 | 96% | 96% | 95% | 95% | 96% | 96% | 95% | 95% | 95% | 95% | 95% | 94% |
| 2018 | 95% | 95% | 95% | 95% | 95% | 95% | 96% | 96% | 96% | 96% | 96% | 96% |
| 2017 | 53% | 75% | 96% | 95% | 95% | 95% | 95% | 95% | 95% | 95% | 95% | 95% |
Frequently asked questions
Is Lake Austin full?
Not quite. On Oct 28, 2026 Lake Austin was 96.5% full, 0.53 feet below its full pool elevation of 492.80 ft. It was last full on Mar 12, 2015.
What is the normal level of Lake Austin for this time of year?
Between 1996 and 2025, Lake Austin averaged 95.4% full around Oct 28, and 8 in 10 years it was between 94.5% and 96.5%. Today it is +1.1 percentage points above that average.
What is the lowest Lake Austin has been?
In the TWDB record, which starts in 1966, the lowest daily value was 20.2% on Jan 23, 1986. The highest was 100.0% on Mar 1, 1970.
How often is the Lake Austin water level updated?
TWDB publishes one reading per day for each reservoir. We check for new data every 2 hours and show the date of the reading next to the level. Recent values are provisional.
What does percent full mean?
It is the water stored in the conservation pool divided by the conservation capacity (23,972 acre-feet for Lake Austin). Water above the conservation pool is flood storage and is not counted, so a reservoir can show 100% while rising into its flood pool.