Lake Arrowhead: 66.9% 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 66.9 920.13 154,096 154,096 230,359 11,478
1 day prior 2022-12-06 67.1 920.18 154,671 154,671 230,359 11,504
2 days prior 2022-12-05 67.4 920.23 155,247 155,247 230,359 11,530
1 week prior 2022-11-30 67.4 920.23 155,247 155,247 230,359 11,530
1 month prior 2022-11-07 67.8 920.32 156,286 156,286 230,359 11,576
3 months prior 2022-09-07 72.5 921.23 167,034 167,034 230,359 12,046
6 months prior 2022-06-07 82.3 923.04 189,682 189,682 230,359 12,979
1 year prior 2021-12-07 87.4 923.92 201,303 201,303 230,359 13,433
*

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 03:00 920.17 926.00 -5.83
1 hour prior 2022-12-08 02:00 920.13 926.00 -5.87
2 hours prior 2022-12-08 01:00 920.14 926.00 -5.86
6 hours prior 2022-12-07 21:00 920.15 926.00 -5.85
12 hours prior 2022-12-07 15:00 920.14 926.00 -5.86
24 hours prior 2022-12-07 03:00 920.13 926.00 -5.87
48 hours prior 2022-12-06 03:00 920.21 926.00 -5.79
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1966-01-01
Gauge USGS:07314800
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

Lake Location