Ray Roberts Lake: 93.6% full as of 2026-09-27

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 2026-09-27 93.6 630.69 738,187 737,864 788,167 27,252
Yesterday 2026-09-26 93.7 630.72 739,005 738,682 788,167 27,269
2 days ago 2026-09-25 93.9 630.76 740,097 739,774 788,167 27,292
1 week ago 2026-09-20 94.3 630.89 743,650 743,327 788,167 27,367
1 month ago 2026-08-27 96.5 631.52 761,006 760,683 788,167 27,736
3 months ago 2026-06-27 100.0 633.79 825,620 788,167 788,167 - n.a. -
6 months ago 2026-03-27 100.0 632.61 791,613 788,167 788,167 - n.a. -
1 year ago 2025-09-27 96.6 631.55 761,838 761,515 788,167 27,754
*

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 2026-09-27 22:15 630.69 632.50 -1.81 below flood pool
1 hour prior 2026-09-27 21:15 630.68 632.50 -1.82 below flood pool
2 hours prior 2026-09-27 20:15 630.68 632.50 -1.82 below flood pool
6 hours prior 2026-09-27 16:15 630.69 632.50 -1.81 below flood pool
12 hours prior 2026-09-27 10:15 630.68 632.50 -1.82 below flood pool
24 hours prior 2026-09-26 22:15 630.70 632.50 -1.80 below flood pool
48 hours prior 2026-09-25 22:15 630.73 632.50 -1.77 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1987-01-01
Vertical datum NGVD29
Dead pool elevation 551.00 ft above NGVD29
Service spillway crest elevation 645.50 ft above NGVD29
Emergency spillway crest elevation 645.50 ft above NGVD29
Flood pool elevation 640.50 ft above NGVD29
Maximum design elevation 658.80 ft above NGVD29
Top of dam elevation 665.00 ft above NGVD29
Conservation pool elevation 632.50 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2008-10-01 (source: TWDB) : GIS Data
Data Source USGS:08051100
USGS Monitoring Location USGS:08051100

Lake Location