Medina Lake water level today
On Oct 28, 2026, Medina Lake is at 1,019.12 ft, 27.2% full (45.08 ft below full pool). That is 28.1 points below normal for this date.
Source: Texas Water Development Board · storage 69,378 of 254,823 acre-ft · provisional data
Medina Lake percent full history
Percent full Normal range (10th–90th percentile, 1996–2025) Average
Medina Lake 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. Black specks are cloud and shadow masks.
Records and key dates
- Record high
- 100.0%Aug 9, 1997
- Record low
- 1.9%May 21, 2025
- 12-month high
- 30.1%Aug 11, 2026
- 12-month low
- 3.8%Apr 12, 2026
- Last time full
- Jul 7, 2019
- Change in 1 year
- +37.31 ft+21.8 pts
About Medina Lake
- River basin
- San Antonio
- Full pool (top of conservation pool)
- 1,064.20 ft
- Conservation capacity
- 254,823 acre-ft
- Surface area today
- 2,343 acres
- Dead pool elevation
- 912.20 ft
- Flood control reservoir
- No
- Data since
- Aug 9, 1997
Monthly average, last 10 years
Average percent full each month.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 5% | 4% | 4% | 4% | 4% | 6% | 19% | 30% | 29% | 28% | — | — |
| 2025 | 3% | 2% | 2% | 2% | 2% | 2% | 5% | 6% | 6% | 6% | 5% | 5% |
| 2024 | 3% | 3% | 3% | 3% | 3% | 2% | 3% | 3% | 3% | 3% | 3% | 3% |
| 2023 | 6% | 6% | 6% | 5% | 5% | 5% | 5% | 5% | 4% | 4% | 4% | 3% |
| 2022 | 25% | 25% | 23% | 20% | 18% | 15% | 12% | 9% | 8% | 7% | 7% | 6% |
| 2021 | 41% | 40% | 38% | 35% | 35% | 35% | 35% | 33% | 30% | 29% | 27% | 26% |
| 2020 | 77% | 76% | 74% | 72% | 69% | 67% | 62% | 57% | 52% | 49% | 45% | 42% |
| 2019 | 100% | 100% | 100% | 99% | 99% | 100% | 99% | 95% | 90% | 86% | 83% | 80% |
| 2018 | 65% | 63% | 61% | 60% | 59% | 55% | 50% | 47% | 54% | 77% | 92% | 96% |
| 2017 | 92% | 92% | 93% | 92% | 90% | 88% | 83% | 79% | 76% | 73% | 70% | 68% |
Frequently asked questions
Is Medina Lake full?
Not quite. On Oct 28, 2026 Medina Lake was 27.2% full, 45.08 feet below its full pool elevation of 1,064.20 ft. It was last full on Jul 7, 2019.
What is the normal level of Medina Lake for this time of year?
Between 1996 and 2025, Medina Lake averaged 55.3% full around Oct 28, and 8 in 10 years it was between 3.8% and 100.0%. Today it is −28.1 percentage points below that average.
What is the lowest Medina Lake has been?
In the TWDB record, which starts in 1997, the lowest daily value was 1.9% on May 21, 2025. The highest was 100.0% on Aug 9, 1997.
How often is the Medina Lake 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 (254,823 acre-feet for Medina Lake). Water above the conservation pool is flood storage and is not counted, so a reservoir can show 100% while rising into its flood pool.