Halbert Lake: 73.2% full as of 2026-09-14
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 | 2026-09-14 | 73.2 | 365.02 | 4,414 | 4,414 | 6,033 | 509 |
| 1 day prior | 2026-09-13 | 73.3 | 365.04 | 4,424 | 4,424 | 6,033 | 510 |
| 2 days prior | 2026-09-12 | 73.5 | 365.06 | 4,434 | 4,434 | 6,033 | 510 |
| 1 week prior | 2026-09-07 | 74.1 | 365.13 | 4,470 | 4,470 | 6,033 | 512 |
| 1 month prior | 2026-08-14 | 78.5 | 365.64 | 4,734 | 4,734 | 6,033 | 523 |
| 3 months prior | 2026-06-14 | 78.4 | 365.63 | 4,729 | 4,729 | 6,033 | 523 |
| 6 months prior | 2026-03-14 | 76.4 | 365.40 | 4,609 | 4,609 | 6,033 | 518 |
| 1 year prior | 2025-09-14 | 87.6 | 366.67 | 5,285 | 5,285 | 6,033 | 547 |
*
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 | 2026-09-14 23:30 | 365.01 | 368.00 | -2.99 |
| 1 hour prior | 2026-09-14 22:30 | 365.01 | 368.00 | -2.99 |
| 2 hours prior | 2026-09-14 21:30 | 365.01 | 368.00 | -2.99 |
| 6 hours prior | 2026-09-14 17:30 | 365.00 | 368.00 | -3.00 |
| 12 hours prior | 2026-09-14 11:30 | 365.03 | 368.00 | -2.97 |
| 24 hours prior | 2026-09-13 23:30 | 365.02 | 368.00 | -2.98 |
| 48 hours prior | 2026-09-12 23:30 | 365.06 | 368.00 | -2.94 |
*
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
