Halbert Lake: 78.3% full as of 2026-08-15
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Today | 2026-08-15 | 78.3 | 365.62 | 4,723 | 4,723 | 6,033 | 523 |
| Yesterday | 2026-08-14 | 78.5 | 365.64 | 4,734 | 4,734 | 6,033 | 523 |
| 2 days ago | 2026-08-13 | 78.7 | 365.67 | 4,750 | 4,750 | 6,033 | 524 |
| 1 week ago | 2026-08-08 | 79.8 | 365.79 | 4,813 | 4,813 | 6,033 | 527 |
| 1 month ago | 2026-07-15 | 83.2 | 366.18 | 5,020 | 5,020 | 6,033 | 536 |
| 3 months ago | 2026-05-15 | 75.4 | 365.28 | 4,547 | 4,547 | 6,033 | 515 |
| 6 months ago | 2026-02-15 | 75.3 | 365.27 | 4,542 | 4,542 | 6,033 | 515 |
| 1 year ago | 2025-08-15 | 87.2 | 366.62 | 5,258 | 5,258 | 6,033 | 546 |
*
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 | 2026-08-15 19:30 | 365.60 | 368.00 | -2.40 |
| 1 hour prior | 2026-08-15 18:30 | 365.60 | 368.00 | -2.40 |
| 2 hours prior | 2026-08-15 17:30 | 365.60 | 368.00 | -2.40 |
| 6 hours prior | 2026-08-15 13:30 | 365.61 | 368.00 | -2.39 |
| 12 hours prior | 2026-08-15 07:30 | 365.62 | 368.00 | -2.38 |
| 24 hours prior | 2026-08-14 19:30 | 365.63 | 368.00 | -2.37 |
| 48 hours prior | 2026-08-13 19:30 | 365.65 | 368.00 | -2.35 |
*
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
