Twin Buttes Reservoir: 4.8% full as of 2026-10-07
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 | 2026-10-07 | 4.8 | 1,895.18 | 12,547 | 8,798 | 182,454 | 1,061 |
| Yesterday | 2026-10-06 | 4.8 | 1,895.21 | 12,579 | 8,830 | 182,454 | 1,063 |
| 2 days ago | 2026-10-05 | 4.9 | 1,895.26 | 12,633 | 8,884 | 182,454 | 1,066 |
| 1 week ago | 2026-09-30 | 5.0 | 1,895.44 | 12,827 | 9,078 | 182,454 | 1,077 |
| 1 month ago | 2026-09-07 | 5.8 | 1,896.78 | 14,314 | 10,565 | 182,454 | 1,159 |
| 3 months ago | 2026-07-07 | 8.2 | 1,900.24 | 18,667 | 14,918 | 182,454 | 1,372 |
| 6 months ago | 2026-04-07 | 10.4 | 1,902.97 | 22,647 | 18,898 | 182,454 | 1,569 |
| 1 year ago | 2025-10-07 | 13.4 | 1,906.23 | 28,157 | 24,408 | 182,454 | 1,852 |
*
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 | 2026-10-07 03:00 | 1,895.17 | 1,940.20 | -45.03 |
| 1 hour prior | 2026-10-07 02:00 | 1,895.18 | 1,940.20 | -45.02 |
| 2 hours prior | 2026-10-07 01:00 | 1,895.18 | 1,940.20 | -45.02 |
| 6 hours prior | 2026-10-06 21:00 | 1,895.19 | 1,940.20 | -45.01 |
| 12 hours prior | 2026-10-06 15:00 | 1,895.20 | 1,940.20 | -45.00 |
| 24 hours prior | 2026-10-06 03:00 | 1,895.23 | 1,940.20 | -44.97 |
| 48 hours prior | 2026-10-05 03:00 | 1,895.28 | 1,940.20 | -44.92 |
*
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
