Benbrook Lake: 74.5% full as of 2026-09-15
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 | 2026-09-15 | 74.5 | 687.47 | 63,800 | 63,800 | 85,648 | 3,043 |
| Yesterday | 2026-09-14 | 74.5 | 687.48 | 63,830 | 63,830 | 85,648 | 3,044 |
| 2 days ago | 2026-09-13 | 75.0 | 687.60 | 64,196 | 64,196 | 85,648 | 3,053 |
| 1 week ago | 2026-09-08 | 77.0 | 688.18 | 65,981 | 65,981 | 85,648 | 3,101 |
| 1 month ago | 2026-08-15 | 87.8 | 691.02 | 75,169 | 75,169 | 85,648 | 3,382 |
| 3 months ago | 2026-06-15 | 100.0 | 694.51 | 87,552 | 85,648 | 85,648 | - n.a. - |
| 6 months ago | 2026-03-15 | 84.6 | 690.21 | 72,464 | 72,464 | 85,648 | 3,296 |
| 1 year ago | 2025-09-15 | 90.4 | 691.68 | 77,421 | 77,421 | 85,648 | 3,441 |
*
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 | 2026-09-15 03:00 | 687.39 | 694.00 | -6.61 |
| 1 hour prior | 2026-09-15 02:00 | 687.43 | 694.00 | -6.57 |
| 2 hours prior | 2026-09-15 01:00 | 687.47 | 694.00 | -6.53 |
| 6 hours prior | 2026-09-14 21:00 | 687.46 | 694.00 | -6.54 |
| 12 hours prior | 2026-09-14 15:00 | 687.45 | 694.00 | -6.55 |
| 24 hours prior | 2026-09-14 03:00 | 687.52 | 694.00 | -6.48 |
| 48 hours prior | 2026-09-13 03:00 | 687.56 | 694.00 | -6.44 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1950-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 622.00 ft above NGVD29 |
| Service spillway crest elevation | 710.00 ft above NGVD29 |
| Emergency spillway crest elevation | 724.00 ft above NGVD29 |
| Flood pool elevation | 710.00 ft above NGVD29 |
| Maximum design elevation | 741.00 ft above NGVD29 |
| Top of dam elevation | 747.00 ft above NGVD29 |
| Conservation pool elevation | 694.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
| Data Source | USGS:08046500 |
| USGS Monitoring Location | USGS:08046500 |
Lake Location
