Lake Bonham: 75.0% full as of 2026-10-24
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 | 2026-10-24 | 75.0 | 562.21 | 8,283 | 8,271 | 11,027 | 917 |
| Yesterday | 2026-10-23 | 75.1 | 562.22 | 8,292 | 8,280 | 11,027 | 917 |
| 2 days ago | 2026-10-22 | 75.3 | 562.24 | 8,311 | 8,299 | 11,027 | 919 |
| 1 week ago | 2026-10-17 | 76.1 | 562.34 | 8,403 | 8,391 | 11,027 | 926 |
| 1 month ago | 2026-09-24 | 78.5 | 562.62 | 8,664 | 8,652 | 11,027 | 942 |
| 3 months ago | 2026-07-24 | 95.2 | 564.49 | 10,508 | 10,496 | 11,027 | 1,028 |
| 6 months ago | 2026-04-24 | 80.7 | 562.88 | 8,911 | 8,899 | 11,027 | 955 |
| 1 year ago | 2025-10-24 | 76.0 | 562.33 | 8,394 | 8,382 | 11,027 | 925 |
*
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 | 2026-10-24 19:00 | 562.21 | 565.00 | -2.79 |
| 1 hour prior | 2026-10-24 18:00 | 562.21 | 565.00 | -2.79 |
| 2 hours prior | 2026-10-24 17:00 | 562.21 | 565.00 | -2.79 |
| 6 hours prior | 2026-10-24 13:00 | 562.21 | 565.00 | -2.79 |
| 12 hours prior | 2026-10-24 07:00 | 562.20 | 565.00 | -2.80 |
| 24 hours prior | 2026-10-23 19:00 | 562.22 | 565.00 | -2.78 |
| 48 hours prior | 2026-10-22 19:00 | 562.24 | 565.00 | -2.76 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1969-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 538.00 ft above NGVD29 |
| Service spillway crest elevation | 565.00 ft above NGVD29 |
| Emergency spillway crest elevation | 571.00 ft above NGVD29 |
| Top of dam elevation | 584.00 ft above NGVD29 |
| Conservation pool elevation | 565.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
| Data Source | USGS:07332610 |
| USGS Monitoring Location | USGS:07332610 |
Lake Location
