Halbert Lake: 77.1% full as of 2026-10-07
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 | 2026-10-07 | 77.1 | 365.48 | 4,650 | 4,650 | 6,033 | 520 |
| Yesterday | 2026-10-06 | 77.1 | 365.48 | 4,650 | 4,650 | 6,033 | 520 |
| 2 days ago | 2026-10-05 | 77.1 | 365.48 | 4,650 | 4,650 | 6,033 | 520 |
| 1 week ago | 2026-09-30 | 72.0 | 364.88 | 4,343 | 4,343 | 6,033 | 506 |
| 1 month ago | 2026-09-07 | 74.1 | 365.13 | 4,470 | 4,470 | 6,033 | 512 |
| 3 months ago | 2026-07-07 | 80.2 | 365.84 | 4,839 | 4,839 | 6,033 | 528 |
| 6 months ago | 2026-04-07 | 76.0 | 365.35 | 4,583 | 4,583 | 6,033 | 517 |
| 1 year ago | 2025-10-07 | 84.9 | 366.37 | 5,122 | 5,122 | 6,033 | 540 |
*
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 | 2026-10-07 16:30 | 365.47 | 368.00 | -2.53 |
| 1 hour prior | 2026-10-07 15:30 | 365.47 | 368.00 | -2.53 |
| 2 hours prior | 2026-10-07 14:30 | 365.48 | 368.00 | -2.52 |
| 6 hours prior | 2026-10-07 10:30 | 365.48 | 368.00 | -2.52 |
| 12 hours prior | 2026-10-07 04:30 | 365.48 | 368.00 | -2.52 |
| 24 hours prior | 2026-10-06 16:30 | 365.48 | 368.00 | -2.52 |
| 48 hours prior | 2026-10-05 16:30 | 365.47 | 368.00 | -2.53 |
*
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
