Halbert Lake: 74.9% full as of 2026-08-31
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 | 2026-08-31 | 74.9 | 365.22 | 4,516 | 4,516 | 6,033 | 514 |
| 1 day prior | 2026-08-30 | 75.0 | 365.24 | 4,526 | 4,526 | 6,033 | 514 |
| 2 days prior | 2026-08-29 | 75.2 | 365.26 | 4,537 | 4,537 | 6,033 | 515 |
| 1 week prior | 2026-08-24 | 76.3 | 365.39 | 4,604 | 4,604 | 6,033 | 518 |
| 1 month prior | 2026-07-31 | 81.4 | 365.98 | 4,913 | 4,913 | 6,033 | 531 |
| 3 months prior | 2026-05-31 | 78.2 | 365.61 | 4,718 | 4,718 | 6,033 | 523 |
| 6 months prior | 2026-02-28 | 75.2 | 365.26 | 4,537 | 4,537 | 6,033 | 515 |
| 1 year prior | 2025-08-31 | 87.0 | 366.60 | 5,247 | 5,247 | 6,033 | 545 |
*
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 | 2026-08-31 22:30 | 365.22 | 368.00 | -2.78 |
| 1 hour prior | 2026-08-31 21:30 | 365.21 | 368.00 | -2.79 |
| 2 hours prior | 2026-08-31 20:30 | 365.22 | 368.00 | -2.78 |
| 6 hours prior | 2026-08-31 16:30 | 365.22 | 368.00 | -2.78 |
| 12 hours prior | 2026-08-31 10:30 | 365.24 | 368.00 | -2.76 |
| 24 hours prior | 2026-08-30 22:30 | 365.23 | 368.00 | -2.77 |
| 48 hours prior | 2026-08-29 22:30 | 365.25 | 368.00 | -2.75 |
*
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
