Monticello Reservoir: 71.7% full as of 2026-10-24
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 | 2026-10-24 | 71.7 | 334.49 | 24,898 | 24,898 | 34,740 | 1,534 |
| Yesterday | 2026-10-23 | 71.7 | 334.50 | 24,913 | 24,913 | 34,740 | 1,534 |
| 2 days ago | 2026-10-22 | 71.8 | 334.51 | 24,929 | 24,929 | 34,740 | 1,535 |
| 1 week ago | 2026-10-17 | 72.0 | 334.57 | 25,021 | 25,021 | 34,740 | 1,538 |
| 1 month ago | 2026-09-24 | 73.6 | 334.92 | 25,563 | 25,563 | 34,740 | 1,560 |
| 3 months ago | 2026-07-24 | 80.5 | 336.40 | 27,975 | 27,975 | 34,740 | 1,675 |
| 6 months ago | 2026-04-24 | 80.5 | 336.40 | 27,975 | 27,975 | 34,740 | 1,675 |
| 1 year ago | 2025-10-24 | 78.9 | 336.07 | 27,414 | 27,414 | 34,740 | 1,645 |
*
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 | 2026-10-24 19:15 | 334.48 | 340.00 | -5.52 |
| 1 hour prior | 2026-10-24 18:15 | 334.48 | 340.00 | -5.52 |
| 2 hours prior | 2026-10-24 17:15 | 334.45 | 340.00 | -5.55 |
| 6 hours prior | 2026-10-24 13:15 | 334.48 | 340.00 | -5.52 |
| 12 hours prior | 2026-10-24 07:15 | 334.49 | 340.00 | -5.51 |
| 24 hours prior | 2026-10-23 19:15 | 334.49 | 340.00 | -5.51 |
| 48 hours prior | 2026-10-22 19:15 | 334.51 | 340.00 | -5.49 |
*
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
