Fort Phantom Hill Reservoir: 66.0% full as of 2023-03-22

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)
Today 2023-03-22 66.0 1,628.89 46,217 46,211 70,030 2,958
Yesterday 2023-03-21 66.1 1,628.91 46,276 46,270 70,030 2,960
2 days ago 2023-03-20 66.2 1,628.93 46,335 46,329 70,030 2,962
1 week ago 2023-03-15 66.5 1,629.02 46,602 46,596 70,030 2,971
1 month ago 2023-02-22 66.5 1,629.01 46,572 46,566 70,030 2,970
3 months ago 2022-12-22 67.7 1,629.30 47,438 47,432 70,030 2,999
6 months ago 2022-09-22 68.4 1,629.46 47,919 47,913 70,030 3,014
1 year ago 2022-03-22 91.0 1,634.24 63,742 63,736 70,030 3,662
*

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 2023-03-22 16:30 1,628.90 1,635.90 -7.00
1 hour prior 2023-03-22 15:30 1,628.91 1,635.90 -6.99
2 hours prior 2023-03-22 14:30 1,628.89 1,635.90 -7.01
6 hours prior 2023-03-22 10:30 1,628.90 1,635.90 -7.00
12 hours prior 2023-03-22 04:30 1,628.89 1,635.90 -7.01
24 hours prior 2023-03-21 16:30 1,628.91 1,635.90 -6.99
48 hours prior 2023-03-20 16:30 1,628.96 1,635.90 -6.94
*

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