Lake Arrowhead: 71.1% full as of 2026-09-16
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 | 2026-09-16 | 71.1 | 920.95 | 163,682 | 163,682 | 230,359 | 11,901 |
| 1 day prior | 2026-09-15 | 71.3 | 920.99 | 164,158 | 164,158 | 230,359 | 11,922 |
| 2 days prior | 2026-09-14 | 71.5 | 921.03 | 164,635 | 164,635 | 230,359 | 11,942 |
| 1 week prior | 2026-09-09 | 72.0 | 921.13 | 165,832 | 165,832 | 230,359 | 11,994 |
| 1 month prior | 2026-08-16 | 75.5 | 921.80 | 173,984 | 173,984 | 230,359 | 12,340 |
| 3 months prior | 2026-06-16 | 84.2 | 923.36 | 193,862 | 193,862 | 230,359 | 13,144 |
| 6 months prior | 2026-03-16 | 81.7 | 922.92 | 188,128 | 188,128 | 230,359 | 12,917 |
| 1 year prior | 2025-09-16 | 90.3 | 924.42 | 208,084 | 208,084 | 230,359 | 13,691 |
*
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 | 2026-09-16 23:00 | 920.92 | 926.00 | -5.08 |
| 1 hour prior | 2026-09-16 22:00 | 920.93 | 926.00 | -5.07 |
| 2 hours prior | 2026-09-16 21:00 | 920.93 | 926.00 | -5.07 |
| 6 hours prior | 2026-09-16 17:00 | 920.94 | 926.00 | -5.06 |
| 12 hours prior | 2026-09-16 11:00 | 920.95 | 926.00 | -5.05 |
| 24 hours prior | 2026-09-15 23:00 | 920.96 | 926.00 | -5.04 |
| 48 hours prior | 2026-09-14 23:00 | 921.02 | 926.00 | -4.98 |
*
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 |
| USGS Monitoring Location | USGS:07314800 |
Lake Location
