Lake Bob Sandlin: 86.5% full as of 2026-11-09
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 | 2026-11-09 | 86.5 | 334.47 | 177,112 | 166,381 | 192,417 | 8,304 |
| 1 day prior | 2026-11-08 | 86.5 | 334.48 | 177,195 | 166,464 | 192,417 | 8,306 |
| 2 days prior | 2026-11-07 | 86.6 | 334.49 | 177,278 | 166,547 | 192,417 | 8,308 |
| 1 week prior | 2026-11-02 | 86.9 | 334.56 | 177,860 | 167,129 | 192,417 | 8,321 |
| 1 month prior | 2026-10-09 | 88.5 | 334.94 | 181,034 | 170,303 | 192,417 | 8,389 |
| 3 months prior | 2026-08-09 | 93.9 | 336.17 | 191,499 | 180,768 | 192,417 | 8,628 |
| 6 months prior | 2026-05-09 | 96.2 | 336.66 | 195,750 | 185,019 | 192,417 | 8,724 |
| 1 year prior | 2025-11-09 | 93.8 | 336.14 | 191,240 | 180,509 | 192,417 | 8,622 |
*
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 | 2026-11-09 23:00 | 334.46 | 337.50 | -3.04 |
| 1 hour prior | 2026-11-09 22:00 | 334.46 | 337.50 | -3.04 |
| 2 hours prior | 2026-11-09 21:00 | 334.46 | 337.50 | -3.04 |
| 6 hours prior | 2026-11-09 17:00 | 334.46 | 337.50 | -3.04 |
| 12 hours prior | 2026-11-09 11:00 | 334.47 | 337.50 | -3.03 |
| 24 hours prior | 2026-11-08 23:00 | 334.48 | 337.50 | -3.02 |
| 48 hours prior | 2026-11-07 23:00 | 334.49 | 337.50 | -3.01 |
*
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
