Twin Buttes Reservoir: 4.2% full as of 2026-11-07
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 | 2026-11-07 | 4.2 | 1,894.01 | 11,335 | 7,586 | 182,454 | 1,012 |
| Yesterday | 2026-11-06 | 4.2 | 1,894.04 | 11,366 | 7,617 | 182,454 | 1,014 |
| 2 days ago | 2026-11-05 | 4.2 | 1,894.08 | 11,407 | 7,658 | 182,454 | 1,015 |
| 1 week ago | 2026-10-31 | 4.2 | 1,894.16 | 11,490 | 7,741 | 182,454 | 1,018 |
| 1 month ago | 2026-10-07 | 4.8 | 1,895.15 | 12,515 | 8,766 | 182,454 | 1,059 |
| 3 months ago | 2026-08-07 | 7.3 | 1,899.10 | 17,144 | 13,395 | 182,454 | 1,300 |
| 6 months ago | 2026-05-07 | 10.2 | 1,902.76 | 22,328 | 18,579 | 182,454 | 1,554 |
| 1 year ago | 2025-11-07 | 12.3 | 1,905.17 | 26,261 | 22,512 | 182,454 | 1,734 |
*
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 | 2026-11-07 20:00 | 1,894.04 | 1,940.20 | -46.16 |
| 1 hour prior | 2026-11-07 19:00 | 1,894.03 | 1,940.20 | -46.17 |
| 2 hours prior | 2026-11-07 18:00 | 1,894.04 | 1,940.20 | -46.16 |
| 6 hours prior | 2026-11-07 14:00 | 1,894.00 | 1,940.20 | -46.20 |
| 12 hours prior | 2026-11-07 08:00 | 1,894.01 | 1,940.20 | -46.19 |
| 24 hours prior | 2026-11-06 20:00 | 1,894.02 | 1,940.20 | -46.18 |
| 48 hours prior | 2026-11-05 20:00 | 1,894.05 | 1,940.20 | -46.15 |
*
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)
|
|
| Data Source | USGS:08131200 |
| USGS Monitoring Location | USGS:08131200 |
Lake Location
