Greenbelt Lake: 5.7% full as of 2026-07-28
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 | 2026-07-28 | 5.7 | 2,609.20 | 3,856 | 3,424 | 59,968 | 309 |
| Yesterday | 2026-07-27 | 5.7 | 2,609.21 | 3,858 | 3,426 | 59,968 | 309 |
| 2 days ago | 2026-07-26 | 5.7 | 2,609.24 | 3,866 | 3,434 | 59,968 | 310 |
| 1 week ago | 2026-07-21 | 5.8 | 2,609.46 | 3,923 | 3,491 | 59,968 | 314 |
| 1 month ago | 2026-06-28 | 6.1 | 2,610.03 | 4,096 | 3,664 | 59,968 | 324 |
| 3 months ago | 2026-04-28 | 6.8 | 2,611.22 | 4,522 | 4,090 | 59,968 | 344 |
| 6 months ago | 2026-01-28 | 7.6 | 2,612.50 | 4,979 | 4,547 | 59,968 | 367 |
| 1 year ago | 2025-07-28 | 9.8 | 2,615.82 | 6,301 | 5,869 | 59,968 | 424 |
*
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 | 2026-07-28 18:30 | 2,609.17 | 2,664.00 | -54.83 |
| 1 hour prior | 2026-07-28 17:30 | 2,609.18 | 2,664.00 | -54.82 |
| 2 hours prior | 2026-07-28 16:30 | 2,609.18 | 2,664.00 | -54.82 |
| 6 hours prior | 2026-07-28 12:30 | 2,609.19 | 2,664.00 | -54.81 |
| 12 hours prior | 2026-07-28 06:30 | 2,609.19 | 2,664.00 | -54.81 |
| 24 hours prior | 2026-07-27 18:30 | 2,609.20 | 2,664.00 | -54.80 |
| 48 hours prior | 2026-07-26 18:30 | 2,609.23 | 2,664.00 | -54.77 |
*
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)
|
|
| Data Source | USGS:07299840 |
| USGS Monitoring Location | USGS:07299840 |
Lake Location
