Twin Buttes Reservoir: 4.7% full as of 2026-10-09
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 | 2026-10-09 | 4.7 | 1,895.05 | 12,407 | 8,658 | 182,454 | 1,053 |
| Yesterday | 2026-10-08 | 4.8 | 1,895.09 | 12,450 | 8,701 | 182,454 | 1,056 |
| 2 days ago | 2026-10-07 | 4.8 | 1,895.15 | 12,515 | 8,766 | 182,454 | 1,059 |
| 1 week ago | 2026-10-02 | 5.0 | 1,895.40 | 12,784 | 9,035 | 182,454 | 1,074 |
| 1 month ago | 2026-09-09 | 5.7 | 1,896.67 | 14,189 | 10,440 | 182,454 | 1,152 |
| 3 months ago | 2026-07-09 | 8.1 | 1,900.17 | 18,570 | 14,821 | 182,454 | 1,367 |
| 6 months ago | 2026-04-09 | 10.3 | 1,902.90 | 22,541 | 18,792 | 182,454 | 1,564 |
| 1 year ago | 2025-10-09 | 13.3 | 1,906.13 | 27,970 | 24,221 | 182,454 | 1,840 |
*
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 | 2026-10-09 13:00 | 1,895.03 | 1,940.20 | -45.17 |
| 1 hour prior | 2026-10-09 12:00 | 1,895.03 | 1,940.20 | -45.17 |
| 2 hours prior | 2026-10-09 11:00 | 1,895.04 | 1,940.20 | -45.16 |
| 6 hours prior | 2026-10-09 07:00 | 1,895.05 | 1,940.20 | -45.15 |
| 12 hours prior | 2026-10-09 01:00 | 1,895.06 | 1,940.20 | -45.14 |
| 24 hours prior | 2026-10-08 13:00 | 1,895.09 | 1,940.20 | -45.11 |
| 48 hours prior | 2026-10-07 13:00 | 1,895.15 | 1,940.20 | -45.05 |
*
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
