Lake Bob Sandlin: 94.0% full as of 2026-08-06
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Most recent | 2026-08-06 | 94.0 | 336.18 | 191,585 | 180,854 | 192,417 | 8,630 |
| 1 day prior | 2026-08-05 | 94.1 | 336.20 | 191,758 | 181,027 | 192,417 | 8,634 |
| 2 days prior | 2026-08-04 | 94.2 | 336.22 | 191,931 | 181,200 | 192,417 | 8,638 |
| 1 week prior | 2026-07-30 | 94.8 | 336.37 | 193,229 | 182,498 | 192,417 | 8,667 |
| 1 month prior | 2026-07-06 | 96.1 | 336.64 | 195,576 | 184,845 | 192,417 | 8,720 |
| 3 months prior | 2026-05-06 | 96.2 | 336.67 | 195,838 | 185,107 | 192,417 | 8,726 |
| 6 months prior | 2026-02-06 | 93.8 | 336.14 | 191,240 | 180,509 | 192,417 | 8,622 |
| 1 year prior | 2025-08-06 | 97.8 | 337.03 | 198,992 | 188,261 | 192,417 | 8,796 |
*
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 | 2026-08-07 00:00 | 336.16 | 337.50 | -1.34 |
| 1 hour prior | 2026-08-06 23:00 | 336.16 | 337.50 | -1.34 |
| 2 hours prior | 2026-08-06 22:00 | 336.16 | 337.50 | -1.34 |
| 6 hours prior | 2026-08-06 18:00 | 336.17 | 337.50 | -1.33 |
| 12 hours prior | 2026-08-06 12:00 | 336.18 | 337.50 | -1.32 |
| 24 hours prior | 2026-08-06 00:00 | 336.18 | 337.50 | -1.32 |
| 48 hours prior | 2026-08-05 00:00 | 336.21 | 337.50 | -1.29 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1978-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 300.00 ft above NGVD29 |
| Service spillway crest elevation | 316.50 ft above NGVD29 |
| Emergency spillway crest elevation | 341.30 ft above NGVD29 |
| Maximum design elevation | 345.60 ft above NGVD29 |
| Top of dam elevation | 349.00 ft above NGVD29 |
| Conservation pool elevation | 337.50 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1978-01-01 (source: USGS)
2000-10-01 (source: USGS)
2008-11-01 (source: TWDB)
: GIS Data
2018-02-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:07344489 |
| USGS Monitoring Location | USGS:07344489 |
Lake Location
