Fort Phantom Hill Reservoir: 80.4% full as of 2018-07-20

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 2018-07-20 80.4 1,632.12 56,326 56,320 70,030 3,327
1 day prior 2018-07-19 80.6 1,632.16 56,459 56,453 70,030 3,333
2 days prior 2018-07-18 80.8 1,632.20 56,592 56,586 70,030 3,339
1 week prior 2018-07-13 81.4 1,632.32 56,994 56,988 70,030 3,357
1 month prior 2018-06-20 84.1 1,632.89 58,933 58,927 70,030 3,445
3 months prior 2018-04-20 85.6 1,633.19 59,977 59,971 70,030 3,511
6 months prior 2018-01-20 88.9 1,633.84 62,289 62,283 70,030 3,603
1 year prior 2017-07-20 98.8 1,635.69 69,215 69,209 70,030 3,891
*

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 2018-07-21 04:30 1,632.09 1,635.9 -3.8 below flood pool
1 hour prior 2018-07-21 03:30 1,632.09 1,635.9 -3.8 below flood pool
2 hours prior 2018-07-21 02:30 1,632.10 1,635.9 -3.8 below flood pool
6 hours prior 2018-07-20 22:30 1,632.10 1,635.9 -3.8 below flood pool
12 hours prior 2018-07-20 16:30 1,632.12 1,635.9 -3.8 below flood pool
24 hours prior 2018-07-20 04:30 1,632.13 1,635.9 -3.8 below flood pool
48 hours prior 2018-07-19 04:30 1,632.17 1,635.9 -3.7 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1938-01-01
Vertical datum NGVD29
Gauge USGS:08083500
Dead pool elevation 1,582.4 ft above NGVD29
Service spillway crest elevation 1,635.9 ft above NGVD29
Emergency spillway crest elevation 1,642.0 ft above NGVD29
Top of dam elevation 1,650.0 ft above NGVD29
Conservation pool elevation 1,635.9 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