Twin Buttes Reservoir: 4.2% full as of 2026-10-29
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 | 2026-10-29 | 4.2 | 1,894.09 | 11,418 | 7,669 | 182,454 | 1,015 |
| Yesterday | 2026-10-28 | 4.2 | 1,894.13 | 11,459 | 7,710 | 182,454 | 1,017 |
| 2 days ago | 2026-10-27 | 4.3 | 1,894.18 | 11,510 | 7,761 | 182,454 | 1,019 |
| 1 week ago | 2026-10-22 | 4.4 | 1,894.39 | 11,726 | 7,977 | 182,454 | 1,027 |
| 1 month ago | 2026-09-29 | 5.0 | 1,895.45 | 12,838 | 9,089 | 182,454 | 1,077 |
| 3 months ago | 2026-07-29 | 7.8 | 1,899.67 | 17,898 | 14,149 | 182,454 | 1,335 |
| 6 months ago | 2026-04-29 | 10.3 | 1,902.90 | 22,541 | 18,792 | 182,454 | 1,564 |
| 1 year ago | 2025-10-29 | 12.6 | 1,905.47 | 26,791 | 23,042 | 182,454 | 1,767 |
*
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 | 2026-10-29 16:00 | 1,894.08 | 1,940.20 | -46.12 |
| 1 hour prior | 2026-10-29 15:00 | 1,894.09 | 1,940.20 | -46.11 |
| 2 hours prior | 2026-10-29 14:00 | 1,894.08 | 1,940.20 | -46.12 |
| 6 hours prior | 2026-10-29 10:00 | 1,894.08 | 1,940.20 | -46.12 |
| 12 hours prior | 2026-10-29 04:00 | 1,894.10 | 1,940.20 | -46.10 |
| 24 hours prior | 2026-10-28 16:00 | 1,894.12 | 1,940.20 | -46.08 |
| 48 hours prior | 2026-10-27 16:00 | 1,894.18 | 1,940.20 | -46.02 |
*
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
