Lake Arrowhead: 75.8% full as of 2026-08-15
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 | 2026-08-15 | 75.8 | 921.85 | 174,602 | 174,602 | 230,359 | 12,365 |
| Yesterday | 2026-08-14 | 76.0 | 921.88 | 174,973 | 174,973 | 230,359 | 12,381 |
| 2 days ago | 2026-08-13 | 76.2 | 921.93 | 175,593 | 175,593 | 230,359 | 12,407 |
| 1 week ago | 2026-08-08 | 77.0 | 922.07 | 177,335 | 177,335 | 230,359 | 12,479 |
| 1 month ago | 2026-07-15 | 80.2 | 922.65 | 184,659 | 184,659 | 230,359 | 12,778 |
| 3 months ago | 2026-05-15 | 84.8 | 923.48 | 195,442 | 195,442 | 230,359 | 13,206 |
| 6 months ago | 2026-02-15 | 82.8 | 923.13 | 190,852 | 190,852 | 230,359 | 13,026 |
| 1 year ago | 2025-08-15 | 93.8 | 924.99 | 215,972 | 215,972 | 230,359 | 13,985 |
*
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 | 2026-08-15 20:00 | 921.82 | 926.00 | -4.18 |
| 1 hour prior | 2026-08-15 19:00 | 921.84 | 926.00 | -4.16 |
| 2 hours prior | 2026-08-15 18:00 | 921.82 | 926.00 | -4.18 |
| 6 hours prior | 2026-08-15 14:00 | 921.83 | 926.00 | -4.17 |
| 12 hours prior | 2026-08-15 08:00 | 921.86 | 926.00 | -4.14 |
| 24 hours prior | 2026-08-14 20:00 | 921.85 | 926.00 | -4.15 |
| 48 hours prior | 2026-08-13 20:00 | 921.91 | 926.00 | -4.09 |
*
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
