Reservoir · Texas · United States · TWDB
Monticello Reservoir
72.9% full
Capacity
42.85 hm³
Volume stored
31 hm³
Vs month average
93% of normal
Coordinates
33.080°N, 95.044°W
Last updated
2026-10-13
Current fill
72.9%vs 7 days ago
-0.4%losing
vs 1 year ago
-6.9%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
93%of normal
72.9% full on 2026-10-13, against an average of 78.2% for October across 5 years of readings (-5.3 points).
Data source: Texas Water Development Board (Water Data for Texas) — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-10-13.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
About Monticello Reservoir
As of October 13, 2026, Monticello Reservoir is filled to 72.9% of its total capacity, holding roughly 31 hm³ of water out of a maximum 43 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.4 pts), and it is 6.9 points below its level on the same date a year earlier.
Across the readings we hold for Monticello Reservoir — 1460 data points between October 15, 2022 and October 13, 2026 — the level has ranged from a low of 72.9% (October 12, 2026) to a high of 97.8% (June 5, 2024). On average the reservoir is fullest around June and at its lowest around October.
It is operated by TWDB primarily for multiple purposes. It lies within the Texas basin at 33.080°N, 95.044°W.
Key facts
- Current fill level
- 72.9%
- Water stored
- 31 hm³
- Total capacity
- 43 hm³
- 7-day change
- ▼ 0.4 pts
- Year-on-year
- ▼ 6.9 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- TWDB
- Coordinates
- 33.080°N, 95.044°W
- Last updated
- October 13, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 13 Oct 2026 | 72.9% | 31 |
| 12 Oct 2026 | 72.9% | 31 |
| 11 Oct 2026 | 73.0% | 31 |
| 10 Oct 2026 | 73.1% | 31 |
| 9 Oct 2026 | 73.1% | 31 |
| 8 Oct 2026 | 73.2% | 31 |
| 7 Oct 2026 | 73.3% | 31 |
| 6 Oct 2026 | 73.3% | 31 |
| 5 Oct 2026 | 73.3% | 31 |
| 4 Oct 2026 | 73.4% | 31 |
| 3 Oct 2026 | 73.1% | 31 |
| 2 Oct 2026 | 73.3% | 31 |