Lake Arrowhead: 71.8% full as of 2026-09-11
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 | 2026-09-11 | 71.8 | 921.09 | 165,353 | 165,353 | 230,359 | 11,973 |
| Yesterday | 2026-09-10 | 71.9 | 921.11 | 165,592 | 165,592 | 230,359 | 11,984 |
| 2 days ago | 2026-09-09 | 72.0 | 921.13 | 165,832 | 165,832 | 230,359 | 11,994 |
| 1 week ago | 2026-09-04 | 72.7 | 921.27 | 167,517 | 167,517 | 230,359 | 12,066 |
| 1 month ago | 2026-08-11 | 76.5 | 921.99 | 176,338 | 176,338 | 230,359 | 12,438 |
| 3 months ago | 2026-06-11 | 84.8 | 923.47 | 195,311 | 195,311 | 230,359 | 13,201 |
| 6 months ago | 2026-03-11 | 82.6 | 923.09 | 190,331 | 190,331 | 230,359 | 13,005 |
| 1 year ago | 2025-09-11 | 91.0 | 924.53 | 209,593 | 209,593 | 230,359 | 13,748 |
*
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 | 2026-09-11 09:00 | 921.09 | 926.00 | -4.91 |
| 1 hour prior | 2026-09-11 08:00 | 921.08 | 926.00 | -4.92 |
| 2 hours prior | 2026-09-11 07:00 | 921.10 | 926.00 | -4.90 |
| 6 hours prior | 2026-09-11 03:00 | 921.09 | 926.00 | -4.91 |
| 12 hours prior | 2026-09-10 21:00 | 921.10 | 926.00 | -4.90 |
| 24 hours prior | 2026-09-10 09:00 | 921.13 | 926.00 | -4.87 |
| 48 hours prior | 2026-09-09 09:00 | 921.13 | 926.00 | -4.87 |
*
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
