Sam Rayburn Reservoir, TX

Sam Rayburn Reservoir is at 63.2% of conservation capacity as of 2026-10-12, which we classify as low. That is 10.72 ft below full pool of 164.40 ft. Over the past 30 days the level has fallen 1.19 ft.

The most recent reading at Sam Rayburn Reservoir is 153.68 ft (2026-10-12), sourced from the Texas Water Development Board. Readings on this page refresh automatically as the agency publishes new data.

The highest level for Sam Rayburn Reservoir in our records is 175.22 ft on 2021-06-03. The lowest is 150.75 ft on 1996-08-11. Our record covers about 38 years of readings.

Compared with every October in our records, the current level is higher than 6% of them, which we classify as low. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.

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. Sam Rayburn Reservoir has fallen 1.19 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.

Sam Rayburn Reservoir is -2.72 ft compared with this date last year (153.68 ft today). The full-history chart above covers 38 years, with a record high of 175.22 ft and a record low of 150.75 ft.