Lake Jacksonville, TX

Lake Jacksonville is at 96.1% of conservation capacity as of 2026-10-13, which we classify as near full. That is 0.87 ft below full pool of 422.00 ft. Over the past 30 days the level has fallen 0.29 ft.

The most recent reading at Lake Jacksonville is 421.13 ft (2026-10-13), sourced from the Texas Water Development Board. Readings on this page refresh automatically as the agency publishes new data.

The highest level for Lake Jacksonville in our records is 424.36 ft on 2007-07-06. The lowest is 416.36 ft on 2011-11-18. Our record covers about 27 years of readings.

Compared with every October in our records, the current level is higher than 55% of them, which we classify as 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.

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 Jacksonville has fallen 0.29 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.

Lake Jacksonville is -0.80 ft compared with this date last year (421.13 ft today). The full-history chart above covers 27 years, with a record high of 424.36 ft and a record low of 416.36 ft.