Halbert Lake: 90.9% full as of 2022-12-07

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, and (2) the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

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 2022-12-07 90.9 367.03 5,483 5,483 6,033 555
1 day prior 2022-12-06 90.8 367.02 5,478 5,478 6,033 555
2 days prior 2022-12-05 90.6 367.00 5,467 5,467 6,033 555
1 week prior 2022-11-30 90.2 366.95 5,439 5,439 6,033 553
1 month prior 2022-11-07 78.3 365.62 4,723 4,723 6,033 523
3 months prior 2022-09-07 76.9 365.46 4,640 4,640 6,033 519
6 months prior 2022-06-07 88.3 366.75 5,329 5,329 6,033 549
1 year prior 2021-12-07 85.3 366.42 5,149 5,149 6,033 541
*

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 2022-12-08 01:30 367.04 368.00 -0.96
1 hour prior 2022-12-08 00:30 367.04 368.00 -0.96
2 hours prior 2022-12-07 23:30 367.04 368.00 -0.96
6 hours prior 2022-12-07 19:30 367.03 368.00 -0.97
12 hours prior 2022-12-07 13:30 367.03 368.00 -0.97
24 hours prior 2022-12-07 01:30 367.02 368.00 -0.98
48 hours prior 2022-12-06 01:30 367.01 368.00 -0.99
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1921-01-01
Gauge USGS:08064510
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
End date: 1950-01-01
367.00 ft above NGVD29
Conservation pool elevation
Start date: 1950-01-01
368.00 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

Lake Location