Lake Cisco water level today
On Oct 28, 2026, Lake Cisco is at 1,502.87 ft, 42.2% full (19.59 ft below full pool). That is 16.1 points below normal for this date.
Lowest since May 2015Very low
Source: Texas Water Development Board · storage 12,241 of 29,003 acre-ft · provisional data
Lake Cisco percent full history
Percent full Normal range (10th–90th percentile, 1996–2025) Average
Records and key dates
- Record high
- 100.0%May 31, 2016
- Record low
- 30.3%Jul 13, 2013
- 12-month high
- 49.9%Oct 29, 2025
- 12-month low
- 42.2%Oct 27, 2026
- Last time full
- Jun 18, 2021
- Change in 1 year
- −3.72 ft−7.7 pts
About Lake Cisco
- River basin
- Brazos
- Full pool (top of conservation pool)
- 1,522.46 ft
- Conservation capacity
- 29,003 acre-ft
- Surface area today
- 575 acres
- Dead pool elevation
- 0.00 ft
- Flood control reservoir
- No
- Data since
- Feb 11, 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 | 48% | 48% | 48% | 48% | 47% | 47% | 46% | 45% | 43% | 42% | — | — |
| 2025 | 59% | 58% | 57% | 57% | 57% | 57% | 55% | 54% | 52% | 50% | 49% | 49% |
| 2024 | 61% | 61% | 61% | 61% | 61% | 60% | 58% | 56% | 56% | 55% | 59% | 59% |
| 2023 | 71% | 71% | 70% | 69% | 69% | 70% | 69% | 66% | 64% | 62% | 62% | 61% |
| 2022 | 87% | 86% | 86% | 84% | 83% | 82% | 79% | 76% | 75% | 73% | 72% | 72% |
| 2021 | 79% | 79% | 78% | 78% | 82% | 99% | 97% | 94% | 92% | 90% | 89% | 88% |
| 2020 | 87% | 87% | 89% | 89% | 88% | 86% | 84% | 82% | 83% | 82% | 80% | 79% |
| 2019 | 84% | 84% | 83% | 84% | 94% | 99% | 97% | 94% | 91% | 89% | 88% | 87% |
| 2018 | 82% | 82% | 83% | 82% | 80% | 78% | 76% | 75% | 73% | 77% | 82% | 83% |
| 2017 | 90% | 90% | 90% | 89% | 88% | 92% | 90% | 89% | 87% | 86% | 84% | 83% |
Frequently asked questions
Is Lake Cisco full?
Not quite. On Oct 28, 2026 Lake Cisco was 42.2% full, 19.59 feet below its full pool elevation of 1,522.46 ft. It was last full on Jun 18, 2021.
What is the normal level of Lake Cisco for this time of year?
Between 1996 and 2025, Lake Cisco averaged 58.3% full around Oct 28, and 8 in 10 years it was between 35.9% and 88.0%. Today it is −16.1 percentage points below that average.
What is the lowest Lake Cisco has been?
In the TWDB record, which starts in 1999, the lowest daily value was 30.3% on Jul 13, 2013. The highest was 100.0% on May 31, 2016.
How often is the Lake Cisco 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 (29,003 acre-feet for Lake Cisco). Water above the conservation pool is flood storage and is not counted, so a reservoir can show 100% while rising into its flood pool.