Lake Sweetwater water level today
On Oct 28, 2026, Lake Sweetwater is at 2,090.23 ft, 16.3% full (26.27 ft below full pool). That is 26.7 points below normal for this date.
Lowest since September 2018Very low
Source: Texas Water Development Board · storage 1,996 of 12,267 acre-ft · provisional data
Lake Sweetwater percent full history
Percent full Normal range (10th–90th percentile, 1996–2025) Average
Records and key dates
- Record high
- 100.0%Nov 1, 2018
- Record low
- 3.1%Jul 21, 2007
- 12-month high
- 26.5%Oct 29, 2025
- 12-month low
- 16.2%Oct 26, 2026
- Last time full
- May 1, 2020
- Change in 1 year
- −5.55 ft−10.2 pts
About Lake Sweetwater
- River basin
- Brazos
- Full pool (top of conservation pool)
- 2,116.50 ft
- Conservation capacity
- 12,267 acre-ft
- Surface area today
- 200 acres
- Dead pool elevation
- 0.00 ft
- Flood control reservoir
- No
- Data since
- Mar 26, 1999
Monthly average, last 10 years
Average percent full each month.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 25% | 24% | 24% | 23% | 22% | 22% | 20% | 19% | 17% | 16% | — | — |
| 2025 | 36% | 35% | 35% | 34% | 34% | 33% | 32% | 30% | 28% | 27% | 26% | 25% |
| 2024 | 47% | 47% | 46% | 45% | 45% | 44% | 41% | 38% | 38% | 37% | 37% | 36% |
| 2023 | 60% | 59% | 59% | 57% | 57% | 56% | 54% | 52% | 49% | 48% | 48% | 48% |
| 2022 | 80% | 79% | 79% | 78% | 75% | 72% | 68% | 65% | 63% | 62% | 61% | 61% |
| 2021 | 82% | 82% | 81% | 80% | 81% | 83% | 88% | 87% | 85% | 83% | 81% | 80% |
| 2020 | 98% | 100% | 100% | 100% | 99% | 96% | 92% | 88% | 87% | 85% | 83% | 82% |
| 2019 | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 99% | 98% | 96% | 96% | 97% |
| 2018 | 19% | 19% | 19% | 18% | 18% | 16% | 15% | 14% | 17% | 59% | 100% | 100% |
| 2017 | 22% | 23% | 24% | 24% | 24% | 24% | 23% | 22% | 21% | 21% | 20% | 20% |
Frequently asked questions
Is Lake Sweetwater full?
Not quite. On Oct 28, 2026 Lake Sweetwater was 16.3% full, 26.27 feet below its full pool elevation of 2,116.50 ft. It was last full on May 1, 2020.
What is the normal level of Lake Sweetwater for this time of year?
Between 1996 and 2025, Lake Sweetwater averaged 43.0% full around Oct 28, and 8 in 10 years it was between 9.4% and 84.0%. Today it is −26.7 percentage points below that average.
What is the lowest Lake Sweetwater has been?
In the TWDB record, which starts in 1999, the lowest daily value was 3.1% on Jul 21, 2007. The highest was 100.0% on Nov 1, 2018.
How often is the Lake Sweetwater 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 (12,267 acre-feet for Lake Sweetwater). Water above the conservation pool is flood storage and is not counted, so a reservoir can show 100% while rising into its flood pool.