Fort Phantom Hill Reservoir: 75.1% full as of 2026-07-30
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 | 2026-07-30 | 75.1 | 1,630.98 | 52,623 | 52,617 | 70,030 | 3,178 |
| Yesterday | 2026-07-29 | 75.3 | 1,631.01 | 52,718 | 52,712 | 70,030 | 3,182 |
| 2 days ago | 2026-07-28 | 75.4 | 1,631.04 | 52,814 | 52,808 | 70,030 | 3,186 |
| 1 week ago | 2026-07-23 | 76.2 | 1,631.21 | 53,357 | 53,351 | 70,030 | 3,205 |
| 1 month ago | 2026-06-30 | 76.4 | 1,631.26 | 53,518 | 53,512 | 70,030 | 3,211 |
| 3 months ago | 2026-04-30 | 74.1 | 1,630.76 | 51,927 | 51,921 | 70,030 | 3,152 |
| 6 months ago | 2026-01-30 | 72.3 | 1,630.34 | 50,612 | 50,606 | 70,030 | 3,109 |
| 1 year ago | 2025-07-30 | 82.9 | 1,632.63 | 58,042 | 58,036 | 70,030 | 3,404 |
*
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 | 2026-07-30 15:30 | 1,630.98 | 1,635.90 | -4.92 |
| 1 hour prior | 2026-07-30 14:30 | 1,630.98 | 1,635.90 | -4.92 |
| 2 hours prior | 2026-07-30 13:30 | 1,630.98 | 1,635.90 | -4.92 |
| 6 hours prior | 2026-07-30 09:30 | 1,630.99 | 1,635.90 | -4.91 |
| 12 hours prior | 2026-07-30 03:30 | 1,630.98 | 1,635.90 | -4.92 |
| 24 hours prior | 2026-07-29 15:30 | 1,631.01 | 1,635.90 | -4.89 |
| 48 hours prior | 2026-07-28 15:30 | 1,631.04 | 1,635.90 | -4.86 |
*
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
