Lake Bob Sandlin: 86.9% full as of 2026-11-01
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 | 2026-11-01 | 86.9 | 334.56 | 177,860 | 167,129 | 192,417 | 8,321 |
| Yesterday | 2026-10-31 | 86.9 | 334.56 | 177,860 | 167,129 | 192,417 | 8,321 |
| 2 days ago | 2026-10-30 | 86.9 | 334.57 | 177,943 | 167,212 | 192,417 | 8,322 |
| 1 week ago | 2026-10-25 | 87.2 | 334.64 | 178,526 | 167,795 | 192,417 | 8,335 |
| 1 month ago | 2026-10-01 | 88.4 | 334.92 | 180,867 | 170,136 | 192,417 | 8,385 |
| 3 months ago | 2026-08-01 | 94.6 | 336.32 | 192,796 | 182,065 | 192,417 | 8,658 |
| 6 months ago | 2026-05-01 | 96.5 | 336.73 | 196,362 | 185,631 | 192,417 | 8,738 |
| 1 year ago | 2025-11-01 | 94.2 | 336.22 | 191,931 | 181,200 | 192,417 | 8,638 |
*
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 | 2026-11-01 00:00 | 334.56 | 337.50 | -2.94 |
| 1 hour prior | 2026-10-31 23:00 | 334.56 | 337.50 | -2.94 |
| 2 hours prior | 2026-10-31 22:00 | 334.56 | 337.50 | -2.94 |
| 6 hours prior | 2026-10-31 18:00 | 334.56 | 337.50 | -2.94 |
| 12 hours prior | 2026-10-31 12:00 | 334.56 | 337.50 | -2.94 |
| 24 hours prior | 2026-10-31 00:00 | 334.57 | 337.50 | -2.93 |
| 48 hours prior | 2026-10-30 00:00 | 334.58 | 337.50 | -2.92 |
*
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
