Halbert Lake: 72.9% full as of 2026-09-16

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 2026-09-16 72.9 364.99 4,399 4,399 6,033 508
1 day prior 2026-09-15 73.0 365.00 4,404 4,404 6,033 509
2 days prior 2026-09-14 73.2 365.02 4,414 4,414 6,033 509
1 week prior 2026-09-09 73.7 365.09 4,449 4,449 6,033 511
1 month prior 2026-08-16 78.0 365.59 4,708 4,708 6,033 522
3 months prior 2026-06-16 83.2 366.18 5,020 5,020 6,033 536
6 months prior 2026-03-16 76.0 365.35 4,583 4,583 6,033 517
1 year prior 2025-09-16 87.3 366.64 5,269 5,269 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 2026-09-17 03:30 364.98 368.00 -3.02
1 hour prior 2026-09-17 02:30 364.98 368.00 -3.02
2 hours prior 2026-09-17 01:30 364.98 368.00 -3.02
6 hours prior 2026-09-16 21:30 364.98 368.00 -3.02
12 hours prior 2026-09-16 15:30 365.00 368.00 -3.00
24 hours prior 2026-09-16 03:30 364.98 368.00 -3.02
48 hours prior 2026-09-15 03:30 365.01 368.00 -2.99
*

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
Start date: 1950-01-01 		368.00 ft above NGVD29
Conservation pool elevation
End date: 1950-01-01 		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