Reservoir · Texas · United States · BOR RISE
Twin Buttes Reservoir
Twin Buttes Reservoir and Dam
6.1% full
Capacity
229.69 hm³
Volume stored
14 hm³
Vs month average
36% of normal
Coordinates
31.377°N, 100.534°W
Last updated
2026-10-28
Current fill
6.1%vs 7 days ago
-0.2 pplosing
vs 1 year ago
-8.3 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
36%of normal
6.1% full on 2026-10-28, against an average of 16.8% for October across 6 years of readings (-10.7 points).
Drought Monitor at this site · 27 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: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 31.377°N, 100.534°W · Open in Google Maps
About Twin Buttes Reservoir
As of October 28, 2026, Twin Buttes Reservoir is filled to 6.1% of its total capacity, holding 14.1 hm³ of water out of a maximum 229.69 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 pp), and it is 8.3 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 30, 2021 and October 28, 2026 — the level has ranged from a low of 6.1% (October 28, 2026) to a high of 52.1% (November 3, 2021). On average the reservoir is fullest around November and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It is at 31.377°N, 100.534°W.
Key facts
- Current fill level
- 6.1% of total capacity
- Water stored
- 14.1 hm³
- Total capacity
- 229.69 hm³
- 7-day change
- ▼ 0.2 pp
- Year-on-year
- ▼ 8.3 pp
- Primary use
- Multipurpose
- Operator
- BOR
- Coordinates
- 31.377°N, 100.534°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 6.1% | 14.1 |
| 27 Oct 2026 | 6.2% | 14.16 |
| 26 Oct 2026 | 6.2% | 14.21 |
| 25 Oct 2026 | 6.2% | 14.25 |
| 24 Oct 2026 | 6.2% | 14.3 |
| 23 Oct 2026 | 6.2% | 14.35 |
| 22 Oct 2026 | 6.3% | 14.41 |
| 21 Oct 2026 | 6.3% | 14.49 |
| 20 Oct 2026 | 6.3% | 14.56 |
| 19 Oct 2026 | 6.4% | 14.64 |
| 18 Oct 2026 | 6.4% | 14.75 |
| 17 Oct 2026 | 6.5% | 14.82 |