Halbert Lake: 75.5% full as of 2026-08-27
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 | 2026-08-27 | 75.5 | 365.30 | 4,557 | 4,557 | 6,033 | 516 |
| 1 day prior | 2026-08-26 | 75.7 | 365.32 | 4,568 | 4,568 | 6,033 | 516 |
| 2 days prior | 2026-08-25 | 76.0 | 365.35 | 4,583 | 4,583 | 6,033 | 517 |
| 1 week prior | 2026-08-20 | 77.2 | 365.49 | 4,656 | 4,656 | 6,033 | 520 |
| 1 month prior | 2026-07-27 | 82.1 | 366.06 | 4,956 | 4,956 | 6,033 | 533 |
| 3 months prior | 2026-05-27 | 77.9 | 365.57 | 4,697 | 4,697 | 6,033 | 522 |
| 6 months prior | 2026-02-27 | 75.2 | 365.26 | 4,537 | 4,537 | 6,033 | 515 |
| 1 year prior | 2025-08-27 | 85.6 | 366.45 | 5,165 | 5,165 | 6,033 | 542 |
*
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 | 2026-08-27 23:30 | 365.28 | 368.00 | -2.72 |
| 1 hour prior | 2026-08-27 22:30 | 365.29 | 368.00 | -2.71 |
| 2 hours prior | 2026-08-27 21:30 | 365.29 | 368.00 | -2.71 |
| 6 hours prior | 2026-08-27 17:30 | 365.29 | 368.00 | -2.71 |
| 12 hours prior | 2026-08-27 11:30 | 365.31 | 368.00 | -2.69 |
| 24 hours prior | 2026-08-26 23:30 | 365.31 | 368.00 | -2.69 |
| 48 hours prior | 2026-08-25 23:30 | 365.33 | 368.00 | -2.67 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1921-01-01 |
| Vertical datum | NGVD29 |
| Service spillway crest elevation | 368.00 ft above NGVD29 |
| Emergency spillway crest elevation | 368.00 ft above NGVD29 |
| Top of dam elevation | 375.00 ft above NGVD29 |
|
Conservation pool elevation |
368.00 ft above NGVD29 |
|
Conservation pool elevation |
367.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1999-02-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08064510 |
| USGS Monitoring Location | USGS:08064510 |
Lake Location
