Monticello Reservoir
Source: Texas Water Development Board (Water Data for Texas)
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Level history
Field notes
Monticello Reservoir's latest daily level (Oct 25, 2026) is 334.48 ft, which is 71.6% of its conservation capacity.
That is 5.52 ft below the conservation (full) pool elevation of 340.00 ft.
Over the past 7 days the lake has been falling (−0.10 ft), and it is −0.42 ft over 30 days.
Compared with a year ago (336.12 ft), the lake is 1.64 ft lower.
For this time of year, the median in TWDB's records (1998–2025, 28 years with data) is 96.8% full, so Monticello is currently below normal by 25.2 percentage points.
In TWDB's dataset (since 1998), the highest level recorded is 342.74 ft (Dec 28, 2015) and the lowest is 334.48 ft (Oct 25, 2026). Older records may be monthly rather than daily.
Lake facts
| Conservation storage | 24,883 ac-ft |
|---|---|
| Total storage (latest) | 24,883 ac-ft |
| Surface area | 1,533 acres |
| Gauge location | 33.0801, -95.0435 |
| Groups | Cypress River Basin North East Texas (Region D) Water Planning Area |
Reference levels
| Level · source | Elevation | Today vs level |
|---|---|---|
| Conservation (full) pool TWDB | 340.00 ft | −5.52 ft |
| Highest in TWDB data (since 1998) TWDB series | 342.74 ft Dec 28, 2015 | −8.26 ft |
| Lowest in TWDB data (since 1998) TWDB series | 334.48 ft Oct 25, 2026 | ±0.00 ft |
| Normal range for this date TWDB series, 28 years 1998–2025 | 82.4–99.6% full (median 96.8%) | — |
| Conservation capacity TWDB | 34,740 acre-feet | — |
Only levels the agency publishes, or that we compute directly from its own records, are listed. “Today vs level” = latest reading minus the reference level. A level the source does not publish is left out rather than estimated.
Nearby lakes
Common questions
How full is Monticello Reservoir right now?
As of Oct 25, 2026, TWDB reports Monticello Reservoir at 71.6% of its conservation capacity (24,883 of 34,740 acre-feet). For this date, the middle half of past years (1998–2025) ranged from 82.4% to 99.6% full, with a median of 96.8%.
What is the record high and low at Monticello Reservoir?
In TWDB's records since 1998, the highest level is 342.74 ft (Dec 28, 2015) and the lowest is 334.48 ft (Oct 25, 2026).
What is full pool at Monticello Reservoir?
The conservation (full) pool elevation used by TWDB is 340.00 ft. The lake is currently 5.52 ft below it.
Is Monticello Reservoir rising or falling?
Over the last 7 days it changed −0.10 ft and over 30 days −0.42 ft.
How often is this page updated?
The page is rebuilt automatically every day from TWDB's published data. Values can be revised later by the source agency.
Where does the data come from?
Water Data for Texas, run by the Texas Water Development Board, which compiles gauge readings from USGS, USACE, river authorities and others. Forecasts come from the National Weather Service.
Values are TWDB daily estimates; elevations in feet above the vertical datum stated by TWDB. TWDB disclaimer: reservoir data are best estimates generated by the Texas Water Development Board from data collected by various providers; TWDB makes no warranties as to their fitness for any purpose. See data sources.