Joe Pool Lake: 100.0% full as of 2020-05-26

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 2020-05-26 100.0 522.87 183,485 175,800 175,800 7,653
1 day prior 2020-05-25 100.0 522.63 181,667 175,800 175,800 7,602
2 days prior 2020-05-24 100.0 522.67 181,970 175,800 175,800 7,611
1 week prior 2020-05-19 100.0 523.79 190,616 175,800 175,800 7,838
1 month prior 2020-04-26 100.0 522.23 178,637 175,800 175,800 7,518
3 months prior 2020-02-26 98.5 521.65 174,312 173,217 175,800 7,407
6 months prior 2019-11-26 88.3 519.15 156,352 155,257 175,800 6,948
1 year prior 2019-05-26 100.0 530.27 246,074 175,800 175,800 9,328
*

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 2020-05-26 23:00 522.78 522.00 0.78 into flood pool
1 hour prior 2020-05-26 22:00 522.78 522.00 0.78 into flood pool
2 hours prior 2020-05-26 21:00 522.79 522.00 0.79 into flood pool
6 hours prior 2020-05-26 17:00 522.82 522.00 0.82 into flood pool
12 hours prior 2020-05-26 11:00 522.87 522.00 0.87 into flood pool
24 hours prior 2020-05-25 23:00 522.88 522.00 0.88 into flood pool
48 hours prior 2020-05-24 23:00 522.56 522.00 0.56 into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1986-01-01
Vertical datum NGVD29
Gauge USGS:08049800
Dead pool elevation 466.00 ft above NGVD29
Emergency spillway crest elevation 541.00 ft above NGVD29
Flood pool elevation 536.00 ft above NGVD29
Maximum design elevation 559.50 ft above NGVD29
Top of dam elevation 564.50 ft above NGVD29
Conservation pool elevation 522.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1986-01-01 (source: usace)

Lake Location