Greenbelt Lake: 4.9% full as of 2026-09-06
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Most recent | 2026-09-06 | 4.9 | 2,607.64 | 3,361 | 2,929 | 59,968 | 284 |
| 1 day prior | 2026-09-05 | 4.9 | 2,607.67 | 3,371 | 2,939 | 59,968 | 284 |
| 2 days prior | 2026-09-04 | 4.9 | 2,607.70 | 3,381 | 2,949 | 59,968 | 285 |
| 1 week prior | 2026-08-30 | 5.0 | 2,607.89 | 3,438 | 3,006 | 59,968 | 289 |
| 1 month prior | 2026-08-06 | 5.5 | 2,608.80 | 3,748 | 3,316 | 59,968 | 302 |
| 3 months prior | 2026-06-06 | 6.4 | 2,610.48 | 4,243 | 3,811 | 59,968 | 333 |
| 6 months prior | 2026-03-06 | 7.5 | 2,612.41 | 4,947 | 4,515 | 59,968 | 365 |
| 1 year prior | 2025-09-06 | 9.1 | 2,614.77 | 5,862 | 5,430 | 59,968 | 405 |
*
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 | 2026-09-06 23:30 | 2,607.61 | 2,664.00 | -56.39 |
| 1 hour prior | 2026-09-06 22:30 | 2,607.61 | 2,664.00 | -56.39 |
| 2 hours prior | 2026-09-06 21:30 | 2,607.62 | 2,664.00 | -56.38 |
| 6 hours prior | 2026-09-06 17:30 | 2,607.63 | 2,664.00 | -56.37 |
| 12 hours prior | 2026-09-06 11:30 | 2,607.64 | 2,664.00 | -56.36 |
| 24 hours prior | 2026-09-05 23:30 | 2,607.65 | 2,664.00 | -56.35 |
| 48 hours prior | 2026-09-04 23:30 | 2,607.69 | 2,664.00 | -56.31 |
*
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
