Halbert Lake: 80.1% full as of 2026-08-06
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 | 2026-08-06 | 80.1 | 365.83 | 4,834 | 4,834 | 6,033 | 528 |
| 1 day prior | 2026-08-05 | 80.3 | 365.85 | 4,844 | 4,844 | 6,033 | 528 |
| 2 days prior | 2026-08-04 | 80.6 | 365.88 | 4,860 | 4,860 | 6,033 | 529 |
| 1 week prior | 2026-07-30 | 81.6 | 366.00 | 4,924 | 4,924 | 6,033 | 531 |
| 1 month prior | 2026-07-06 | 80.3 | 365.85 | 4,844 | 4,844 | 6,033 | 528 |
| 3 months prior | 2026-05-06 | 75.8 | 365.33 | 4,573 | 4,573 | 6,033 | 516 |
| 6 months prior | 2026-02-06 | 75.0 | 365.24 | 4,526 | 4,526 | 6,033 | 514 |
| 1 year prior | 2025-08-06 | 86.2 | 366.52 | 5,203 | 5,203 | 6,033 | 543 |
*
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 | 2026-08-06 23:30 | 365.82 | 368.00 | -2.18 |
| 1 hour prior | 2026-08-06 22:30 | 365.82 | 368.00 | -2.18 |
| 2 hours prior | 2026-08-06 21:30 | 365.82 | 368.00 | -2.18 |
| 6 hours prior | 2026-08-06 17:30 | 365.82 | 368.00 | -2.18 |
| 12 hours prior | 2026-08-06 11:30 | 365.84 | 368.00 | -2.16 |
| 24 hours prior | 2026-08-05 23:30 | 365.84 | 368.00 | -2.16 |
| 48 hours prior | 2026-08-04 23:30 | 365.87 | 368.00 | -2.13 |
*
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
