Lake Ray Hubbard: 85.4% full as of 2026-09-17
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 | 2026-09-17 | 85.4 | 432.29 | 375,262 | 375,262 | 439,559 | 19,491 |
| Yesterday | 2026-09-16 | 85.5 | 432.31 | 375,652 | 375,652 | 439,559 | 19,497 |
| 2 days ago | 2026-09-15 | 85.6 | 432.35 | 376,433 | 376,433 | 439,559 | 19,509 |
| 1 week ago | 2026-09-10 | 86.8 | 432.61 | 381,515 | 381,515 | 439,559 | 19,584 |
| 1 month ago | 2026-08-17 | 92.0 | 433.77 | 404,432 | 404,432 | 439,559 | 19,933 |
| 3 months ago | 2026-06-17 | 99.9 | 435.47 | 438,932 | 438,932 | 439,559 | 20,910 |
| 6 months ago | 2026-03-17 | 100.0 | 435.57 | 441,030 | 439,559 | 439,559 | 21,036 |
| 1 year ago | 2025-09-17 | 95.7 | 434.58 | 420,691 | 420,691 | 439,559 | 20,226 |
*
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 | 2026-09-17 03:45 | 432.28 | 435.50 | -3.22 |
| 1 hour prior | 2026-09-17 02:45 | 432.29 | 435.50 | -3.21 |
| 2 hours prior | 2026-09-17 01:45 | 432.29 | 435.50 | -3.21 |
| 6 hours prior | 2026-09-16 21:45 | 432.29 | 435.50 | -3.21 |
| 12 hours prior | 2026-09-16 15:45 | 432.31 | 435.50 | -3.19 |
| 24 hours prior | 2026-09-16 03:45 | 432.33 | 435.50 | -3.17 |
| 48 hours prior | 2026-09-15 03:45 | 432.36 | 435.50 | -3.14 |
*
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
