Lake Ray Hubbard: 92.6% full as of 2026-08-15
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 | 2026-08-15 | 92.6 | 433.89 | 406,826 | 406,826 | 439,559 | 19,971 |
| Yesterday | 2026-08-14 | 92.7 | 433.92 | 407,426 | 407,426 | 439,559 | 19,981 |
| 2 days ago | 2026-08-13 | 92.9 | 433.97 | 408,425 | 408,425 | 439,559 | 19,998 |
| 1 week ago | 2026-08-08 | 94.2 | 434.26 | 414,239 | 414,239 | 439,559 | 20,102 |
| 1 month ago | 2026-07-15 | 98.8 | 435.24 | 434,155 | 434,155 | 439,559 | 20,641 |
| 3 months ago | 2026-05-15 | 99.8 | 435.46 | 438,724 | 438,724 | 439,559 | 20,897 |
| 6 months ago | 2026-02-15 | 94.7 | 434.37 | 416,453 | 416,453 | 439,559 | 20,143 |
| 1 year ago | 2025-08-15 | 95.9 | 434.62 | 421,501 | 421,501 | 439,559 | 20,243 |
*
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 | 2026-08-15 19:45 | 433.87 | 435.50 | -1.63 |
| 1 hour prior | 2026-08-15 18:45 | 433.86 | 435.50 | -1.64 |
| 2 hours prior | 2026-08-15 17:45 | 433.87 | 435.50 | -1.63 |
| 6 hours prior | 2026-08-15 13:45 | 433.88 | 435.50 | -1.62 |
| 12 hours prior | 2026-08-15 07:45 | 433.88 | 435.50 | -1.62 |
| 24 hours prior | 2026-08-14 19:45 | 433.91 | 435.50 | -1.59 |
| 48 hours prior | 2026-08-13 19:45 | 433.96 | 435.50 | -1.54 |
*
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
