Greenbelt Lake water level today
On Oct 28, 2026, Greenbelt Lake is at 2,606.60 ft, 4.4% full (57.40 ft below full pool). That is 20.0 points below normal for this date.
Lowest on record (since 1996)Very low
Source: Texas Water Development Board · storage 2,610 of 59,968 acre-ft · provisional data
Greenbelt Lake percent full history
Percent full Normal range (10th–90th percentile, 1996–2025) Average
Greenbelt 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; contains modified Copernicus Sentinel data 2016. Black specks are cloud and shadow masks.
Records and key dates
- Record high
- 51.1%Jun 18, 1997
- Record low
- 4.4%Oct 11, 2026
- 12-month high
- 8.2%Oct 29, 2025
- 12-month low
- 4.4%Oct 11, 2026
- Last time full
- Not in the record
- Change in 1 year
- −6.90 ft−3.8 pts
About Greenbelt Lake
- River basin
- Red
- Full pool (top of conservation pool)
- 2,664.00 ft
- Conservation capacity
- 59,968 acre-ft
- Surface area today
- 266 acres
- Dead pool elevation
- 2,590.00 ft
- Flood control reservoir
- No
- Data since
- Jun 30, 1996
Monthly average, last 10 years
Average percent full each month.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 8% | 8% | 7% | 7% | 7% | 6% | 6% | 5% | 5% | 4% | — | — |
| 2025 | 9% | 9% | 9% | 9% | 10% | 10% | 10% | 9% | 9% | 8% | 8% | 8% |
| 2024 | 11% | 11% | 11% | 11% | 11% | 11% | 10% | 9% | 9% | 8% | 9% | 9% |
| 2023 | 12% | 12% | 12% | 11% | 11% | 13% | 13% | 12% | 11% | 11% | 11% | 11% |
| 2022 | 16% | 16% | 16% | 16% | 15% | 15% | 14% | 14% | 13% | 13% | 12% | 12% |
| 2021 | 16% | 16% | 17% | 17% | 17% | 18% | 19% | 19% | 18% | 18% | 17% | 17% |
| 2020 | 20% | 20% | 21% | 21% | 20% | 20% | 20% | 19% | 18% | 17% | 17% | 16% |
| 2019 | 20% | 20% | 21% | 21% | 22% | 22% | 22% | 21% | 20% | 20% | 20% | 20% |
| 2018 | 25% | 25% | 25% | 25% | 24% | 23% | 23% | 22% | 21% | 21% | 21% | 20% |
| 2017 | 27% | 27% | 27% | 28% | 28% | 27% | 27% | 26% | 26% | 26% | 26% | 25% |
Frequently asked questions
Is Greenbelt Lake full?
Not quite. On Oct 28, 2026 Greenbelt Lake was 4.4% full, 57.40 feet below its full pool elevation of 2,664.00 ft.
What is the normal level of Greenbelt Lake for this time of year?
Between 1996 and 2025, Greenbelt Lake averaged 24.4% full around Oct 28, and 8 in 10 years it was between 10.8% and 37.2%. Today it is −20.0 percentage points below that average.
What is the lowest Greenbelt Lake has been?
In the TWDB record, which starts in 1996, the lowest daily value was 4.4% on Oct 11, 2026. The highest was 51.1% on Jun 18, 1997.
How often is the Greenbelt 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 (59,968 acre-feet for Greenbelt 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.