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Texas & Rio Grande Reservoir Levels
Six reservoirs, updated daily from Texas Water Development Board data.
Western Reservoir Conditions·Daily·No. 47··Latest reading
- The 6 Texas & Rio Grande reservoirs tracked here hold 3.33 million acre-feet as of - 43.4% of their combined 7.68 million acre-foot capacity.
- Fullest right now: Canyon Lake at 99.9%. Lowest: Elephant Butte Reservoir at 1.4%.
- All data from the Texas Water Development Board's Water Data for Texas service, which also tracks Elephant Butte (New Mexico) because Rio Grande Project storage governs deliveries to Texas. Rebuilt daily.
97.0%
Effectively full
1,018.85 ft · 841,019 AF
wk -0.17 ft · yr -0.01 ft
99.9%
Effectively full
908.94 ft · 378,287 AF
wk -0.28 ft · yr +16.81 ft
1.4%
Critically low
4,275.57 ft · 27,736 AF
wk +0.06 ft · yr -13.15 ft
All 6, side by side
| Reservoir | % full | How full | Elevation (ft) | Storage (AF) | 1-yr change | Record low |
|---|---|---|---|---|---|---|
| Lake Travis | 93.9% | High | 677.39 | 1,030,807 | +4.15 ft | 614.18 ft (1951) |
| Lake Buchanan | 97.0% | Effectively full | 1,018.85 | 841,019 | -0.01 ft | 983.70 ft (1952) |
| Canyon Lake | 99.9% | Effectively full | 908.94 | 378,287 | +16.81 ft | 876.96 ft (2025) |
| Amistad Reservoir | 39.1% | Low | 1,056.57 | 709,382 | -0.60 ft | 1,043.61 ft (2023) |
| Falcon Lake | 21.9% | Very low | 261.83 | 342,420 | +7.87 ft | 235.12 ft (1957) |
| Elephant Butte Reservoir | 1.4% | Critically low | 4,275.57 | 27,736 | -13.15 ft | 4,258.03 ft (1954) |
Effectively full 95% and aboveHigh 75–95%Moderate 50–75%Low 30–50%Very low 15–30%Critically low under 15%
These bands describe share of capacity, not drought severity - some reservoirs are held near the top of a narrow band by design. How they are defined.