Fort Phantom Hill Reservoir: 67.8% full as of 2026-09-13
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 | 2026-09-13 | 67.8 | 1,629.31 | 47,468 | 47,462 | 70,030 | 3,000 |
| Yesterday | 2026-09-12 | 67.9 | 1,629.34 | 47,558 | 47,552 | 70,030 | 3,003 |
| 2 days ago | 2026-09-11 | 68.0 | 1,629.37 | 47,648 | 47,642 | 70,030 | 3,005 |
| 1 week ago | 2026-09-06 | 68.7 | 1,629.52 | 48,099 | 48,093 | 70,030 | 3,020 |
| 1 month ago | 2026-08-13 | 72.7 | 1,630.43 | 50,893 | 50,887 | 70,030 | 3,118 |
| 3 months ago | 2026-06-13 | 79.0 | 1,631.81 | 55,302 | 55,296 | 70,030 | 3,279 |
| 6 months ago | 2026-03-13 | 72.9 | 1,630.48 | 51,049 | 51,043 | 70,030 | 3,123 |
| 1 year ago | 2025-09-13 | 77.8 | 1,631.57 | 54,519 | 54,513 | 70,030 | 3,249 |
*
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 | 2026-09-13 18:30 | 1,629.30 | 1,635.90 | -6.60 |
| 1 hour prior | 2026-09-13 17:30 | 1,629.31 | 1,635.90 | -6.59 |
| 2 hours prior | 2026-09-13 16:30 | 1,629.30 | 1,635.90 | -6.60 |
| 6 hours prior | 2026-09-13 12:30 | 1,629.31 | 1,635.90 | -6.59 |
| 12 hours prior | 2026-09-13 06:30 | 1,629.31 | 1,635.90 | -6.59 |
| 24 hours prior | 2026-09-12 18:30 | 1,629.33 | 1,635.90 | -6.57 |
| 48 hours prior | 2026-09-11 18:30 | 1,629.36 | 1,635.90 | -6.54 |
*
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
