Lake Ray Hubbard: 93.6% full as of 2026-08-11
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 | 2026-08-11 | 93.6 | 434.11 | 411,228 | 411,228 | 439,559 | 20,047 |
| Yesterday | 2026-08-10 | 93.7 | 434.15 | 412,031 | 412,031 | 439,559 | 20,061 |
| 2 days ago | 2026-08-09 | 94.0 | 434.21 | 413,235 | 413,235 | 439,559 | 20,083 |
| 1 week ago | 2026-08-04 | 95.2 | 434.47 | 418,469 | 418,469 | 439,559 | 20,182 |
| 1 month ago | 2026-07-11 | 98.1 | 435.09 | 431,069 | 431,069 | 439,559 | 20,503 |
| 3 months ago | 2026-05-11 | 100.0 | 435.69 | 443,563 | 439,559 | 439,559 | 21,191 |
| 6 months ago | 2026-02-11 | 92.1 | 433.79 | 404,831 | 404,831 | 439,559 | 19,939 |
| 1 year ago | 2025-08-11 | 96.3 | 434.71 | 423,324 | 423,324 | 439,559 | 20,282 |
*
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 | 2026-08-11 17:15 | 434.09 | 435.50 | -1.41 |
| 1 hour prior | 2026-08-11 16:15 | 434.09 | 435.50 | -1.41 |
| 2 hours prior | 2026-08-11 15:15 | 434.09 | 435.50 | -1.41 |
| 6 hours prior | 2026-08-11 11:15 | 434.10 | 435.50 | -1.40 |
| 12 hours prior | 2026-08-11 05:15 | 434.11 | 435.50 | -1.39 |
| 24 hours prior | 2026-08-10 17:15 | 434.14 | 435.50 | -1.36 |
| 48 hours prior | 2026-08-09 17:15 | 434.21 | 435.50 | -1.29 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1969-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 388.00 ft above NGVD29 |
| Service spillway crest elevation | 409.50 ft above NGVD29 |
| Emergency spillway crest elevation | 437.50 ft above NGVD29 |
| Top of dam elevation | 450.00 ft above NGVD29 |
| Conservation pool elevation | 435.50 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1969-01-01 (source: USGS)
1997-10-01 (source: USGS)
2005-05-01 (source: TWDB)
: GIS Data
2015-08-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08061550 |
| USGS Monitoring Location | USGS:08061550 |
Lake Location
