Lake Buchanan Water Level
Texas · updated daily from the Texas Water Development Board
98.6% full
Lake Buchanan is near full at 1019.47 ft and falling (-0.19 ft in the last 7 days).
0.53 ft below full pool of 1020.00 ft · change since yesterday -0.02 ft
Reading as of 2026-08-15 · higher than 98% of August readings on record
Where Lake Buchanan sits historically
Today's level compared with every reading in our 89.1-year record for this lake.
Since yesterday
-0.02 ft
7-day change
-0.19 ft
30-day change
+0.06 ft
1-year change
-0.12 ft
Full pool
1020.0 ft
Last 30 days
Last 12 months
Full history (89.1 years)
Lake Buchanan records and averages
| Current level | 1019.47 ft |
|---|---|
| Percent full | 98.6% |
| Storage | 868,489 acre-feet |
| Record high | 1021.26 ft (1991-12-21) |
| Record low | 966.9 ft (1937-09-30) |
| Average of all readings | 1011.22 ft |
| Data span | 89.1 years (30,686 readings) |
Frequently asked questions
Is Lake Buchanan full right now?
Lake Buchanan is at 98.6% of conservation capacity as of 2026-08-15, which we classify as near full.Over the past 30 days the level has risen 0.06 ft.
What is the water level at Lake Buchanan today?
The most recent reading is 1019.47 ft (2026-08-15), sourced from the Texas Water Development Board. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Lake Buchanan has ever been?
The highest level in our records is 1021.26 ft on 1991-12-21. The lowest is 966.9 ft on 1937-09-30. Our record covers about 89.1 years of readings.
Is Lake Buchanan low for this time of year?
Compared with every August in our records, the current level is higher than 98% of them — near full. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.
Why is Lake Buchanan low right now?
Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. Lake Buchanan has risen 0.06 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.
How much has Lake Buchanan changed over the past year?
The level is -0.12 ft compared with this date last year (1019.47 ft today). The full-history chart above covers 89.1 years, with a record high of 1021.26 ft and a record low of 966.9 ft.
Nearby lakes in Texas
Source: the Texas Water Development Board. Readings are provisional and subject to revision by the publishing agency. All Texas lake levels.