Joe Pool Lake: 99.8% full as of 2023-12-09

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 2023-12-09 99.8 521.96 150,732 149,362 149,629 6,672
Yesterday 2023-12-08 99.9 521.97 150,799 149,429 149,629 6,674
2 days ago 2023-12-07 99.9 521.98 150,865 149,495 149,629 6,676
1 week ago 2023-12-02 100.0 522.05 151,333 149,629 149,629 6,690
1 month ago 2023-11-09 100.0 522.61 155,123 149,629 149,629 6,823
3 months ago 2023-09-09 92.2 520.19 139,338 137,968 149,629 6,213
6 months ago 2023-06-09 100.0 522.51 154,442 149,629 149,629 6,802
1 year ago 2022-12-09 100.0 522.33 153,220 149,629 149,629 6,768
*

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 2023-12-09 11:00 521.94 522.00 -0.06 below flood pool
1 hour prior 2023-12-09 10:00 521.94 522.00 -0.06 below flood pool
2 hours prior 2023-12-09 09:00 521.95 522.00 -0.05 below flood pool
6 hours prior 2023-12-09 05:00 521.96 522.00 -0.04 below flood pool
12 hours prior 2023-12-08 23:00 521.96 522.00 -0.04 below flood pool
24 hours prior 2023-12-08 11:00 521.99 522.00 -0.01 below flood pool
48 hours prior 2023-12-07 11:00 521.97 522.00 -0.03 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1986-01-01
Vertical datum NGVD29
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

1970-01-01 (source: USACE)
2022-05-01 (source: TWDB) : GIS Data
Data Source USGS:08049800

Lake Location