Greenbelt Lake: 5.3% full as of 2026-08-14
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Today | 2026-08-14 | 5.3 | 2,608.40 | 3,599 | 3,167 | 59,968 | 296 |
| Yesterday | 2026-08-13 | 5.3 | 2,608.41 | 3,603 | 3,171 | 59,968 | 296 |
| 2 days ago | 2026-08-12 | 5.3 | 2,608.46 | 3,621 | 3,189 | 59,968 | 297 |
| 1 week ago | 2026-08-07 | 5.5 | 2,608.77 | 3,737 | 3,305 | 59,968 | 301 |
| 1 month ago | 2026-07-14 | 6.0 | 2,609.71 | 4,001 | 3,569 | 59,968 | 319 |
| 3 months ago | 2026-05-14 | 6.6 | 2,610.93 | 4,415 | 3,983 | 59,968 | 341 |
| 6 months ago | 2026-02-14 | 7.6 | 2,612.58 | 5,007 | 4,575 | 59,968 | 368 |
| 1 year ago | 2025-08-14 | 9.5 | 2,615.34 | 6,104 | 5,672 | 59,968 | 416 |
*
Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.
**
Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.
Most Recent Instantaneous Water Level
| Date/time |
Water Level (ft) |
Conservation Pool Elevation (ft) |
Height Above Conservation Pool (ft) |
|
|---|---|---|---|---|
| Most recent | 2026-08-14 10:30 | 2,608.40 | 2,664.00 | -55.60 |
| 1 hour prior | 2026-08-14 09:30 | 2,608.40 | 2,664.00 | -55.60 |
| 2 hours prior | 2026-08-14 08:30 | 2,608.40 | 2,664.00 | -55.60 |
| 6 hours prior | 2026-08-14 04:30 | 2,608.40 | 2,664.00 | -55.60 |
| 12 hours prior | 2026-08-13 22:30 | 2,608.41 | 2,664.00 | -55.59 |
| 24 hours prior | 2026-08-13 10:30 | 2,608.41 | 2,664.00 | -55.59 |
| 48 hours prior | 2026-08-12 10:30 | 2,608.46 | 2,664.00 | -55.54 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1968-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 2,590.00 ft above NGVD29 |
| Service spillway crest elevation | 2,664.00 ft above NGVD29 |
| Emergency spillway crest elevation | 2,674.00 ft above NGVD29 |
| Top of dam elevation | 2,686.00 ft above NGVD29 |
| Conservation pool elevation | 2,664.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1974-10-01 (source: TWDB)
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| Data Source | USGS:07299840 |
| USGS Monitoring Location | USGS:07299840 |
Lake Location
