Hillsdale Lake, KS

As of 2026-10-12, Hillsdale Lake sits at 916.92 ft, which is about average for this time of year. Over the past 30 days the level has risen 0.03 ft.

The most recent reading at Hillsdale Lake is 916.92 ft (2026-10-12), sourced from the U.S. Geological Survey. Readings on this page refresh automatically as the agency publishes new data.

The highest level for Hillsdale Lake in our records is 929.34 ft on 2019-06-07. The lowest is 913.18 ft on 2013-01-26. Our record covers about 14 years of readings.

Compared with every October in our records, the current level is higher than 50% of them, which we classify as about average 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. Hillsdale Lake has risen 0.03 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.

Hillsdale Lake is +0.93 ft compared with this date last year (916.92 ft today). The full-history chart above covers 14 years, with a record high of 929.34 ft and a record low of 913.18 ft.