Monticello Reservoir: 70.9% full as of 2026-11-06
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 | 2026-11-06 | 70.9 | 334.32 | 24,638 | 24,638 | 34,740 | 1,524 |
| Yesterday | 2026-11-05 | 71.1 | 334.36 | 24,699 | 24,699 | 34,740 | 1,526 |
| 2 days ago | 2026-11-04 | 71.0 | 334.34 | 24,669 | 24,669 | 34,740 | 1,525 |
| 1 week ago | 2026-10-30 | 71.3 | 334.41 | 24,775 | 24,775 | 34,740 | 1,529 |
| 1 month ago | 2026-10-06 | 73.2 | 334.83 | 25,423 | 25,423 | 34,740 | 1,555 |
| 3 months ago | 2026-08-06 | 78.9 | 336.06 | 27,397 | 27,397 | 34,740 | 1,644 |
| 6 months ago | 2026-05-06 | 80.9 | 336.48 | 28,113 | 28,113 | 34,740 | 1,682 |
| 1 year ago | 2025-11-06 | 78.5 | 335.99 | 27,280 | 27,280 | 34,740 | 1,638 |
*
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 | 2026-11-06 10:15 | 334.32 | 340.00 | -5.68 |
| 1 hour prior | 2026-11-06 09:15 | 334.32 | 340.00 | -5.68 |
| 2 hours prior | 2026-11-06 08:15 | 334.29 | 340.00 | -5.71 |
| 6 hours prior | 2026-11-06 04:15 | 334.35 | 340.00 | -5.65 |
| 12 hours prior | 2026-11-05 22:15 | 334.35 | 340.00 | -5.65 |
| 24 hours prior | 2026-11-05 10:15 | 334.36 | 340.00 | -5.64 |
| 48 hours prior | 2026-11-04 10:15 | 334.32 | 340.00 | -5.68 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1973-01-01 |
| Vertical datum | NGVD29 |
| Service spillway crest elevation | 328.00 ft above NGVD29 |
| Emergency spillway crest elevation | 343.50 ft above NGVD29 |
| Top of dam elevation | 352.00 ft above NGVD29 |
| Conservation pool elevation | 340.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1998-02-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:07344488 |
| USGS Monitoring Location | USGS:07344488 |
Lake Location
