Reservoir · Texas · United States · BOR RISE
Twin Buttes Reservoir
Twin Buttes Reservoir and Dam
6.6% full
Capacity
229.69 hm³
Volume stored
15 hm³
Vs month average
31% of normal
Coordinates
31.377°N, 100.534°W
Last updated
2026-10-12
Current fill
6.6%vs 7 days ago
-0.2%losing
vs 1 year ago
-8.2%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
31%of normal
6.6% full on 2026-10-12, against an average of 21.5% for October across 6 years of readings (-14.9 points).
Drought Monitor at this site · 6 October 2026
D2severe drought
The ground at Twin Buttes Reservoir's coordinates falls inside the D2 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Texas drought figures →
Data source: BOR RISE — US Bureau of Reclamation — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-10-12.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 31.377, -100.534 · Open in Google Maps
About Twin Buttes Reservoir
As of October 12, 2026, Twin Buttes Reservoir is filled to 6.6% of its total capacity, holding roughly 15 hm³ of water out of a maximum 230 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (-0.2 pts), and it is 8.2 points below its level on the same date a year earlier.
Across the readings we hold for Twin Buttes Reservoir — 1825 data points between October 14, 2021 and October 12, 2026 — the level has ranged from a low of 6.6% (October 9, 2026) to a high of 52.1% (October 14, 2021). On average the reservoir is fullest around November and at its lowest around September.
It is operated by BOR primarily for multiple purposes. It lies within the Texas basin at 31.377°N, 100.534°W.
Key facts
- Current fill level
- 6.6%
- Water stored
- 15 hm³
- Total capacity
- 230 hm³
- 7-day change
- ▼ 0.2 pts
- Year-on-year
- ▼ 8.2 pts
- Primary use
- Multipurpose
- River basin
- Texas
- Operator
- BOR
- Coordinates
- 31.377°N, 100.534°W
- Last updated
- October 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Oct 2026 | 6.6% | 15 |
| 11 Oct 2026 | 6.6% | 15 |
| 10 Oct 2026 | 6.6% | 15 |
| 9 Oct 2026 | 6.6% | 15 |
| 8 Oct 2026 | 6.7% | 15 |
| 7 Oct 2026 | 6.7% | 15 |
| 6 Oct 2026 | 6.7% | 15 |
| 5 Oct 2026 | 6.8% | 16 |
| 4 Oct 2026 | 6.8% | 16 |
| 3 Oct 2026 | 6.8% | 16 |
| 2 Oct 2026 | 6.8% | 16 |
| 1 Oct 2026 | 6.9% | 16 |