Halbert Lake: 81.7% full as of 2026-07-30
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 | 2026-07-30 | 81.7 | 366.01 | 4,929 | 4,929 | 6,033 | 532 |
| Yesterday | 2026-07-29 | 81.8 | 366.02 | 4,934 | 4,934 | 6,033 | 532 |
| 2 days ago | 2026-07-28 | 82.0 | 366.04 | 4,945 | 4,945 | 6,033 | 532 |
| 1 week ago | 2026-07-23 | 83.1 | 366.17 | 5,014 | 5,014 | 6,033 | 535 |
| 1 month ago | 2026-06-30 | 81.4 | 365.98 | 4,913 | 4,913 | 6,033 | 531 |
| 3 months ago | 2026-04-30 | 75.5 | 365.30 | 4,557 | 4,557 | 6,033 | 516 |
| 6 months ago | 2026-01-30 | 75.5 | 365.30 | 4,557 | 4,557 | 6,033 | 516 |
| 1 year ago | 2025-07-30 | 86.6 | 366.56 | 5,225 | 5,225 | 6,033 | 544 |
*
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 | 2026-07-30 15:30 | 365.99 | 368.00 | -2.01 |
| 1 hour prior | 2026-07-30 14:30 | 365.99 | 368.00 | -2.01 |
| 2 hours prior | 2026-07-30 13:30 | 365.99 | 368.00 | -2.01 |
| 6 hours prior | 2026-07-30 09:30 | 366.00 | 368.00 | -2.00 |
| 12 hours prior | 2026-07-30 03:30 | 366.02 | 368.00 | -1.98 |
| 24 hours prior | 2026-07-29 15:30 | 366.01 | 368.00 | -1.99 |
| 48 hours prior | 2026-07-28 15:30 | 366.04 | 368.00 | -1.96 |
*
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
