Lake Bonham: 91.9% full as of 2026-08-03
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 | 2026-08-03 | 91.9 | 564.13 | 10,141 | 10,129 | 11,027 | 1,012 |
| Yesterday | 2026-08-02 | 92.1 | 564.16 | 10,171 | 10,159 | 11,027 | 1,013 |
| 2 days ago | 2026-08-01 | 92.6 | 564.21 | 10,222 | 10,210 | 11,027 | 1,016 |
| 1 week ago | 2026-07-27 | 94.1 | 564.37 | 10,385 | 10,373 | 11,027 | 1,023 |
| 1 month ago | 2026-07-03 | 98.8 | 564.88 | 10,912 | 10,900 | 11,027 | 1,046 |
| 3 months ago | 2026-05-03 | 79.5 | 562.74 | 8,778 | 8,766 | 11,027 | 948 |
| 6 months ago | 2026-02-03 | 71.8 | 561.81 | 7,932 | 7,920 | 11,027 | 829 |
| 1 year ago | 2025-08-03 | 90.9 | 564.03 | 10,040 | 10,028 | 11,027 | 1,007 |
*
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 | 2026-08-03 15:00 | 564.12 | 565.00 | -0.88 |
| 1 hour prior | 2026-08-03 14:00 | 564.12 | 565.00 | -0.88 |
| 2 hours prior | 2026-08-03 13:00 | 564.12 | 565.00 | -0.88 |
| 6 hours prior | 2026-08-03 09:00 | 564.12 | 565.00 | -0.88 |
| 12 hours prior | 2026-08-03 03:00 | 564.13 | 565.00 | -0.87 |
| 24 hours prior | 2026-08-02 15:00 | 564.16 | 565.00 | -0.84 |
| 48 hours prior | 2026-08-01 15:00 | 564.20 | 565.00 | -0.80 |
*
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
