Fort Phantom Hill Reservoir: 69.7% full as of 2023-09-30

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, and (2) the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

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 2023-09-30 69.7 1,629.75 48,797 48,791 70,030 3,043
1 day prior 2023-09-29 69.8 1,629.78 48,888 48,882 70,030 3,046
2 days prior 2023-09-28 69.9 1,629.81 48,980 48,974 70,030 3,049
1 week prior 2023-09-23 70.5 1,629.94 49,377 49,371 70,030 3,064
1 month prior 2023-08-30 71.2 1,630.11 49,900 49,894 70,030 3,085
3 months prior 2023-06-30 77.2 1,631.43 54,065 54,059 70,030 3,232
6 months prior 2023-03-30 65.7 1,628.82 46,010 46,004 70,030 2,952
1 year prior 2022-09-30 67.4 1,629.23 47,228 47,222 70,030 2,992
*

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 2023-10-01 02:30 1,629.73 1,635.90 -6.17
1 hour prior 2023-10-01 01:30 1,629.72 1,635.90 -6.18
2 hours prior 2023-10-01 00:30 1,629.73 1,635.90 -6.17
6 hours prior 2023-09-30 20:30 1,629.73 1,635.90 -6.17
12 hours prior 2023-09-30 14:30 1,629.76 1,635.90 -6.14
24 hours prior 2023-09-30 02:30 1,629.75 1,635.90 -6.15
48 hours prior 2023-09-29 02:30 1,629.79 1,635.90 -6.11
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1938-01-01
Gauge USGS:08083500
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

Lake Location