Halbert Lake: 72.4% full as of 2023-10-03

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 2023-10-03 72.4 364.93 4,368 4,368 6,033 507
1 day prior 2023-10-02 73.0 365.00 4,404 4,404 6,033 509
2 days prior 2023-10-01 73.4 365.05 4,429 4,429 6,033 510
1 week prior 2023-09-26 74.5 365.18 4,496 4,496 6,033 513
1 month prior 2023-09-03 75.3 365.27 4,542 4,542 6,033 515
3 months prior 2023-07-03 87.2 366.62 5,258 5,258 6,033 546
6 months prior 2023-04-03 86.6 366.56 5,225 5,225 6,033 544
1 year prior 2022-10-03 74.9 365.23 4,521 4,521 6,033 514
*

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 2023-10-04 03:30 364.92 368.00 -3.08
1 hour prior 2023-10-04 02:30 364.92 368.00 -3.08
2 hours prior 2023-10-04 01:30 364.92 368.00 -3.08
6 hours prior 2023-10-03 21:30 364.92 368.00 -3.08
12 hours prior 2023-10-03 15:30 364.93 368.00 -3.07
24 hours prior 2023-10-03 03:30 364.95 368.00 -3.05
48 hours prior 2023-10-02 03:30 365.03 368.00 -2.97
*

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