Fort Phantom Hill Reservoir: 66.7% full as of 2026-10-12
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 | 2026-10-12 | 66.7 | 1,629.06 | 46,721 | 46,715 | 70,030 | 2,975 |
| Yesterday | 2026-10-11 | 66.8 | 1,629.09 | 46,810 | 46,804 | 70,030 | 2,978 |
| 2 days ago | 2026-10-10 | 67.0 | 1,629.12 | 46,900 | 46,894 | 70,030 | 2,981 |
| 1 week ago | 2026-10-05 | 67.4 | 1,629.23 | 47,228 | 47,222 | 70,030 | 2,992 |
| 1 month ago | 2026-09-12 | 67.9 | 1,629.34 | 47,558 | 47,552 | 70,030 | 3,003 |
| 3 months ago | 2026-07-12 | 76.6 | 1,631.29 | 53,614 | 53,608 | 70,030 | 3,215 |
| 6 months ago | 2026-04-12 | 73.3 | 1,630.58 | 51,361 | 51,355 | 70,030 | 3,134 |
| 1 year ago | 2025-10-12 | 75.6 | 1,631.09 | 52,973 | 52,967 | 70,030 | 3,192 |
*
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 | 2026-10-12 16:30 | 1,629.06 | 1,635.90 | -6.84 |
| 1 hour prior | 2026-10-12 15:30 | 1,629.07 | 1,635.90 | -6.83 |
| 2 hours prior | 2026-10-12 14:30 | 1,629.08 | 1,635.90 | -6.82 |
| 6 hours prior | 2026-10-12 10:30 | 1,629.08 | 1,635.90 | -6.82 |
| 12 hours prior | 2026-10-12 04:30 | 1,629.06 | 1,635.90 | -6.84 |
| 24 hours prior | 2026-10-11 16:30 | 1,629.09 | 1,635.90 | -6.81 |
| 48 hours prior | 2026-10-10 16:30 | 1,629.11 | 1,635.90 | -6.79 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1938-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 1,582.40 ft above NGVD29 |
| Service spillway crest elevation | 1,635.90 ft above NGVD29 |
| Emergency spillway crest elevation | 1,642.00 ft above NGVD29 |
| Top of dam elevation | 1,650.00 ft above NGVD29 |
| Conservation pool elevation | 1,635.90 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1993-11-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08083500 |
| USGS Monitoring Location | USGS:08083500 |
Lake Location
