Fort Phantom Hill Reservoir: 66.5% full as of 2026-10-28

Historical Data

Date Percent Full Mean Water Level
(ft) 		Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft) 		Surface Area
(acres)
Most recent 2026-10-28 66.5 1,629.02 46,602 46,596 70,030 2,971
1 day prior 2026-10-27 66.6 1,629.03 46,631 46,625 70,030 2,972
2 days prior 2026-10-26 66.6 1,629.04 46,661 46,655 70,030 2,973
1 week prior 2026-10-21 67.0 1,629.14 46,959 46,953 70,030 2,983
1 month prior 2026-09-28 65.7 1,628.83 46,039 46,033 70,030 2,953
3 months prior 2026-07-28 75.4 1,631.04 52,814 52,808 70,030 3,186
6 months prior 2026-04-28 74.4 1,630.82 52,116 52,110 70,030 3,158
1 year prior 2025-10-28 74.9 1,630.92 52,432 52,426 70,030 3,170
*

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 2026-10-28 23:30 1,629.01 1,635.90 -6.89
1 hour prior 2026-10-28 22:30 1,629.02 1,635.90 -6.88
2 hours prior 2026-10-28 21:30 1,629.02 1,635.90 -6.88
6 hours prior 2026-10-28 17:30 1,629.02 1,635.90 -6.88
12 hours prior 2026-10-28 11:30 1,629.02 1,635.90 -6.88
24 hours prior 2026-10-27 23:30 1,629.03 1,635.90 -6.87
48 hours prior 2026-10-26 23:30 1,629.03 1,635.90 -6.87
*

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