Greenbelt Lake: 5.6% full as of 2026-08-04
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 | 2026-08-04 | 5.6 | 2,608.93 | 3,789 | 3,357 | 59,968 | 304 |
| Yesterday | 2026-08-03 | 5.6 | 2,608.96 | 3,798 | 3,366 | 59,968 | 304 |
| 2 days ago | 2026-08-02 | 5.6 | 2,609.01 | 3,811 | 3,379 | 59,968 | 305 |
| 1 week ago | 2026-07-28 | 5.7 | 2,609.19 | 3,854 | 3,422 | 59,968 | 309 |
| 1 month ago | 2026-07-04 | 6.1 | 2,610.05 | 4,102 | 3,670 | 59,968 | 324 |
| 3 months ago | 2026-05-04 | - n.a. - | - n.a. - | - n.a. - | - n.a. - | - n.a. - | - n.a. - |
| 6 months ago | 2026-02-04 | 7.6 | 2,612.59 | 5,011 | 4,579 | 59,968 | 368 |
| 1 year ago | 2025-08-04 | 9.7 | 2,615.69 | 6,254 | 5,822 | 59,968 | 422 |
*
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 | 2026-08-04 15:30 | 2,608.91 | 2,664.00 | -55.09 |
| 1 hour prior | 2026-08-04 14:30 | 2,608.90 | 2,664.00 | -55.10 |
| 2 hours prior | 2026-08-04 13:30 | 2,608.91 | 2,664.00 | -55.09 |
| 6 hours prior | 2026-08-04 09:30 | 2,608.93 | 2,664.00 | -55.07 |
| 12 hours prior | 2026-08-04 03:30 | 2,608.93 | 2,664.00 | -55.07 |
| 24 hours prior | 2026-08-03 15:30 | 2,608.97 | 2,664.00 | -55.03 |
| 48 hours prior | 2026-08-02 15:30 | 2,609.02 | 2,664.00 | -54.98 |
*
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
