Lake Houston, TX

Lake Houston is at 100.0% of conservation capacity as of 2026-10-13, which we classify as full. That puts it right at full pool of 42.38 ft. Over the past 30 days the level has fallen 0.07 ft.

The most recent reading at Lake Houston is 42.43 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 Houston in our records is 52.28 ft on 2017-08-29. The lowest is 36.34 ft on 2011-09-05. Our record covers about 30 years of readings.

Compared with every October in our records, the current level is higher than 52% of them, which we classify as 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 Houston has fallen 0.07 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.

Lake Houston is +0.25 ft compared with this date last year (42.43 ft today). The full-history chart above covers 30 years, with a record high of 52.28 ft and a record low of 36.34 ft.