Birch Lake, OK

As of 2026-10-13, Birch Lake sits at 747.99 ft, which is about average for this time of year. That is 2.51 ft below full pool of 750.50 ft. Over the past 30 days the level has fallen 1.02 ft.

The most recent reading at Birch Lake is 747.99 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 Birch Lake in our records is 773.95 ft on 2019-06-07. The lowest is 560.31 ft on 2015-07-07. Our record covers about 11 years of readings.

Compared with every October in our records, the current level is higher than 53% 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. Birch Lake has fallen 1.02 ft over the past 30 days. For the operational reason on any given week, check the U.S. Army Corps of Engineers directly.

Birch Lake is +0.21 ft compared with this date last year (747.99 ft today). The full-history chart above covers 11 years, with a record high of 773.95 ft and a record low of 560.31 ft.