Twin Buttes Reservoir: 4.9% full as of 2026-10-05
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 | 2026-10-05 | 4.9 | 1,895.28 | 12,655 | 8,906 | 182,454 | 1,067 |
| Yesterday | 2026-10-04 | 4.9 | 1,895.31 | 12,687 | 8,938 | 182,454 | 1,069 |
| 2 days ago | 2026-10-03 | 4.9 | 1,895.36 | 12,741 | 8,992 | 182,454 | 1,072 |
| 1 week ago | 2026-09-28 | 5.0 | 1,895.51 | 12,902 | 9,153 | 182,454 | 1,081 |
| 1 month ago | 2026-09-05 | 5.9 | 1,896.92 | 14,472 | 10,723 | 182,454 | 1,167 |
| 3 months ago | 2026-07-05 | 8.2 | 1,900.32 | 18,778 | 15,029 | 182,454 | 1,378 |
| 6 months ago | 2026-04-05 | 10.4 | 1,903.07 | 22,804 | 19,055 | 182,454 | 1,576 |
| 1 year ago | 2025-10-05 | 13.5 | 1,906.33 | 28,344 | 24,595 | 182,454 | 1,863 |
*
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 | 2026-10-05 00:00 | 1,895.28 | 1,940.20 | -44.92 |
| 1 hour prior | 2026-10-04 23:00 | 1,895.29 | 1,940.20 | -44.91 |
| 2 hours prior | 2026-10-04 22:00 | 1,895.29 | 1,940.20 | -44.91 |
| 6 hours prior | 2026-10-04 18:00 | 1,895.30 | 1,940.20 | -44.90 |
| 12 hours prior | 2026-10-04 12:00 | 1,895.30 | 1,940.20 | -44.90 |
| 24 hours prior | 2026-10-04 00:00 | 1,895.33 | 1,940.20 | -44.87 |
| 48 hours prior | 2026-10-03 00:00 | 1,895.38 | 1,940.20 | -44.82 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1963-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 1,885.00 ft above NGVD29 |
| Emergency spillway crest elevation | 1,969.10 ft above NGVD29 |
| Flood pool elevation | 1,969.10 ft above NGVD29 |
| Maximum design elevation | 1,985.00 ft above NGVD29 |
| Top of dam elevation | 1,991.00 ft above NGVD29 |
| Conservation pool elevation | 1,940.20 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1964-01-01 (source: USBR)
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| Data Source | USGS:08131200 |
| USGS Monitoring Location | USGS:08131200 |
Lake Location
