Lake Arrowhead: 55.2% full as of 2023-10-04

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 2023-10-04 55.2 917.64 127,114 127,114 230,359 10,194
Yesterday 2023-10-03 55.3 917.66 127,318 127,318 230,359 10,204
2 days ago 2023-10-02 55.4 917.68 127,522 127,522 230,359 10,215
1 week ago 2023-09-27 55.9 917.80 128,751 128,751 230,359 10,276
1 month ago 2023-09-04 57.6 918.19 132,799 132,799 230,359 10,478
3 months ago 2023-07-04 65.6 919.87 151,129 151,129 230,359 11,344
6 months ago 2023-04-04 67.3 920.21 155,016 155,016 230,359 11,520
1 year ago 2022-10-04 69.1 920.57 159,197 159,197 230,359 11,705
*

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 05:00 917.64 926.00 -8.36
1 hour prior 2023-10-04 04:00 917.64 926.00 -8.36
2 hours prior 2023-10-04 03:00 917.64 926.00 -8.36
6 hours prior 2023-10-03 23:00 917.64 926.00 -8.36
12 hours prior 2023-10-03 17:00 917.66 926.00 -8.34
24 hours prior 2023-10-03 05:00 917.67 926.00 -8.33
48 hours prior 2023-10-02 05:00 917.67 926.00 -8.33
*

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