Lake Arrowhead: 70.4% full as of 2026-10-21
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 | 2026-10-21 | 70.4 | 920.82 | 162,139 | 162,139 | 230,359 | 11,834 |
| Yesterday | 2026-10-20 | 70.4 | 920.83 | 162,257 | 162,257 | 230,359 | 11,839 |
| 2 days ago | 2026-10-19 | 70.5 | 920.85 | 162,494 | 162,494 | 230,359 | 11,850 |
| 1 week ago | 2026-10-14 | 69.1 | 920.57 | 159,197 | 159,197 | 230,359 | 11,705 |
| 1 month ago | 2026-09-21 | 70.3 | 920.81 | 162,020 | 162,020 | 230,359 | 11,829 |
| 3 months ago | 2026-07-21 | 79.9 | 922.61 | 184,148 | 184,148 | 230,359 | 12,757 |
| 6 months ago | 2026-04-21 | 84.2 | 923.36 | 193,862 | 193,862 | 230,359 | 13,144 |
| 1 year ago | 2025-10-21 | 87.2 | 923.88 | 200,766 | 200,766 | 230,359 | 13,412 |
*
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 | 2026-10-21 17:00 | 920.81 | 926.00 | -5.19 |
| 1 hour prior | 2026-10-21 16:00 | 920.81 | 926.00 | -5.19 |
| 2 hours prior | 2026-10-21 15:00 | 920.82 | 926.00 | -5.18 |
| 6 hours prior | 2026-10-21 11:00 | 920.82 | 926.00 | -5.18 |
| 12 hours prior | 2026-10-21 05:00 | 920.82 | 926.00 | -5.18 |
| 24 hours prior | 2026-10-20 17:00 | 920.82 | 926.00 | -5.18 |
| 48 hours prior | 2026-10-19 17:00 | 920.85 | 926.00 | -5.15 |
*
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
