Lake L. B. Johnson water level today
On Oct 28, 2026, Lake L. B. Johnson is at 824.69 ft, 98.2% full (0.31 ft below full pool). That is 0.5 points above normal for this date.
Source: Texas Water Development Board · storage 110,788 of 112,778 acre-ft · provisional data
Lake L. B. Johnson percent full history
Percent full Normal range (10th–90th percentile, 1996–2025) Average
Lake L. B. Johnson from space
The same area near the lowest and the highest level since 2016, on clear days. Compare the shoreline and the coves.
Imagery: NASA GIBS, Harmonized Landsat Sentinel-2 (HLS). Landsat 8/9 courtesy of NASA/USGS; contains modified Copernicus Sentinel data 2019. Black specks are cloud and shadow masks.
Records and key dates
- Record high
- 100.0%Sep 11, 1952
- Record low
- 0.5%Nov 16, 1970
- 12-month high
- 99.4%Apr 24, 2026
- 12-month low
- 92.9%Jul 17, 2026
- Last time full
- Oct 16, 2018
- Change in 1 year
- −0.05 ft−0.3 pts
About Lake L. B. Johnson
- River basin
- Colorado
- Full pool (top of conservation pool)
- 825.00 ft
- Conservation capacity
- 112,778 acre-ft
- Surface area today
- 6,403 acres
- Dead pool elevation
- 793.40 ft
- Flood control reservoir
- No
- Data since
- Aug 1, 1951
Monthly average, last 10 years
Average percent full each month.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 98% | 99% | 99% | 98% | 98% | 98% | 98% | 99% | 99% | 98% | — | — |
| 2025 | 99% | 98% | 98% | 98% | 98% | 98% | 98% | 99% | 98% | 98% | 98% | 98% |
| 2024 | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 99% |
| 2023 | 98% | 98% | 98% | 98% | 98% | 99% | 99% | 99% | 99% | 98% | 98% | 98% |
| 2022 | 98% | 99% | 99% | 98% | 98% | 99% | 99% | 99% | 98% | 98% | 99% | 99% |
| 2021 | 98% | 98% | 98% | 98% | 97% | 98% | 98% | 98% | 98% | 98% | 98% | 98% |
| 2020 | 79% | 79% | 98% | 98% | 98% | 99% | 99% | 99% | 98% | 98% | 99% | 98% |
| 2019 | 80% | 81% | 98% | 98% | 97% | 98% | 98% | 98% | 98% | 98% | 98% | 98% |
| 2018 | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 97% | 97% | 96% |
| 2017 | 80% | 90% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% | 98% |
Frequently asked questions
Is Lake L. B. Johnson full?
Not quite. On Oct 28, 2026 Lake L. B. Johnson was 98.2% full, 0.31 feet below its full pool elevation of 825.00 ft. It was last full on Oct 16, 2018.
What is the normal level of Lake L. B. Johnson for this time of year?
Between 1996 and 2025, Lake L. B. Johnson averaged 97.7% full around Oct 28, and 8 in 10 years it was between 97.3% and 99.5%. Today it is +0.5 percentage points above that average.
What is the lowest Lake L. B. Johnson has been?
In the TWDB record, which starts in 1951, the lowest daily value was 0.5% on Nov 16, 1970. The highest was 100.0% on Sep 11, 1952.
How often is the Lake L. B. Johnson 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 (112,778 acre-feet for Lake L. B. Johnson). Water above the conservation pool is flood storage and is not counted, so a reservoir can show 100% while rising into its flood pool.