Fort Phantom Hill Reservoir: 68.6% full as of 2026-09-07
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 | 2026-09-07 | 68.6 | 1,629.50 | 48,039 | 48,033 | 70,030 | 3,018 |
| Yesterday | 2026-09-06 | 68.7 | 1,629.52 | 48,099 | 48,093 | 70,030 | 3,020 |
| 2 days ago | 2026-09-05 | 68.8 | 1,629.55 | 48,190 | 48,184 | 70,030 | 3,023 |
| 1 week ago | 2026-08-31 | 69.6 | 1,629.74 | 48,767 | 48,761 | 70,030 | 3,042 |
| 1 month ago | 2026-08-07 | 73.7 | 1,630.66 | 51,612 | 51,606 | 70,030 | 3,142 |
| 3 months ago | 2026-06-07 | 78.4 | 1,631.68 | 54,877 | 54,871 | 70,030 | 3,263 |
| 6 months ago | 2026-03-07 | 71.8 | 1,630.23 | 50,271 | 50,265 | 70,030 | 3,098 |
| 1 year ago | 2025-09-07 | 78.6 | 1,631.74 | 55,073 | 55,067 | 70,030 | 3,270 |
*
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 | 2026-09-07 10:30 | 1,629.49 | 1,635.90 | -6.41 |
| 1 hour prior | 2026-09-07 09:30 | 1,629.49 | 1,635.90 | -6.41 |
| 2 hours prior | 2026-09-07 08:30 | 1,629.49 | 1,635.90 | -6.41 |
| 6 hours prior | 2026-09-07 04:30 | 1,629.49 | 1,635.90 | -6.41 |
| 12 hours prior | 2026-09-06 22:30 | 1,629.51 | 1,635.90 | -6.39 |
| 24 hours prior | 2026-09-06 10:30 | 1,629.52 | 1,635.90 | -6.38 |
| 48 hours prior | 2026-09-05 10:30 | 1,629.56 | 1,635.90 | -6.34 |
*
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
