Lake Arrowhead: 69.7% full as of 2024-12-11

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)
Today 2024-12-11 69.7 920.68 160,487 160,487 230,359 11,762
Yesterday 2024-12-10 69.6 920.66 160,252 160,252 230,359 11,752
2 days ago 2024-12-09 69.7 920.69 160,605 160,605 230,359 11,767
1 week ago 2024-12-04 69.8 920.71 160,840 160,840 230,359 11,777
1 month ago 2024-11-11 70.2 920.79 161,784 161,784 230,359 11,819
3 months ago 2024-09-11 67.1 920.18 154,671 154,671 230,359 11,504
6 months ago 2024-06-11 78.4 922.33 180,597 180,597 230,359 12,613
1 year ago 2023-12-11 54.0 917.37 124,381 124,381 230,359 10,055
*

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 2024-12-11 10:00 920.68 926.00 -5.32
1 hour prior 2024-12-11 09:00 920.68 926.00 -5.32
2 hours prior 2024-12-11 08:00 920.66 926.00 -5.34
6 hours prior 2024-12-11 04:00 920.67 926.00 -5.33
12 hours prior 2024-12-10 22:00 920.68 926.00 -5.32
24 hours prior 2024-12-10 10:00 920.64 926.00 -5.36
48 hours prior 2024-12-09 10:00 920.71 926.00 -5.29
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1966-01-01
Vertical datum NGVD29
Dead pool elevation 874.00 ft above NGVD29
Service spillway crest elevation 926.00 ft above NGVD29
Maximum design elevation 939.55 ft above NGVD29
Top of dam elevation 944.00 ft above NGVD29
Conservation pool elevation 926.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2001-06-01 (source: TWDB) : GIS Data
2013-09-01 (source: TWDB) : GIS Data
Data Source USGS:07314800

Lake Location