Lake Bob Sandlin: 88.2% full as of 2026-10-13
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 | 2026-10-13 | 88.2 | 334.88 | 180,531 | 169,800 | 192,417 | 8,378 |
| Yesterday | 2026-10-12 | 88.3 | 334.89 | 180,615 | 169,884 | 192,417 | 8,380 |
| 2 days ago | 2026-10-11 | 88.4 | 334.91 | 180,783 | 170,052 | 192,417 | 8,383 |
| 1 week ago | 2026-10-06 | 88.6 | 334.96 | 181,202 | 170,471 | 192,417 | 8,392 |
| 1 month ago | 2026-09-13 | 90.3 | 335.36 | 184,574 | 173,843 | 192,417 | 8,470 |
| 3 months ago | 2026-07-13 | 96.1 | 336.65 | 195,663 | 184,932 | 192,417 | 8,722 |
| 6 months ago | 2026-04-13 | 95.4 | 336.50 | 194,357 | 183,626 | 192,417 | 8,693 |
| 1 year ago | 2025-10-13 | 95.2 | 336.44 | 193,836 | 183,105 | 192,417 | 8,681 |
*
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 | 2026-10-13 17:00 | 334.87 | 337.50 | -2.63 |
| 1 hour prior | 2026-10-13 16:00 | 334.87 | 337.50 | -2.63 |
| 2 hours prior | 2026-10-13 15:00 | 334.88 | 337.50 | -2.62 |
| 6 hours prior | 2026-10-13 11:00 | 334.88 | 337.50 | -2.62 |
| 12 hours prior | 2026-10-13 05:00 | 334.88 | 337.50 | -2.62 |
| 24 hours prior | 2026-10-12 17:00 | 334.88 | 337.50 | -2.62 |
| 48 hours prior | 2026-10-11 17:00 | 334.90 | 337.50 | -2.60 |
*
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
