Marion Lake, KS

As of 2026-10-13, Marion Lake sits at 1350.58 ft, which is high for this time of year. That is 0.08 ft above full pool of 1350.50 ft. It is still 7.9 ft below the flood pool of 1358.50 ft. Over the past 30 days the level has risen 0.63 ft.

The most recent reading at Marion Lake is 1350.58 ft (2026-10-13), sourced from the U.S. Army Corps of Engineers. Readings on this page refresh automatically as the agency publishes new data.

The highest level for Marion Lake in our records is 1358.60 ft on 2019-05-22. The lowest is 1039.32 ft on 2015-07-06. Our record covers about 11 years of readings.

Compared with every October in our records, the current level is higher than 91% of them, which we classify as high for this time of year. 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. Marion Lake has risen 0.63 ft over the past 30 days. For the operational reason on any given week, check the U.S. Army Corps of Engineers directly.

Marion Lake is +0.08 ft compared with this date last year (1350.58 ft today). The full-history chart above covers 11 years, with a record high of 1358.60 ft and a record low of 1039.32 ft.