Mountain Island Lake, NC

As of 2026-10-13, Mountain Island Lake sits at 644.00 ft, which is about average for this time of year. That is 3.50 ft below full pool of 647.50 ft. Over the past 30 days the level has risen 0.20 ft.

The most recent reading at Mountain Island Lake is 644.00 ft (2026-10-13), sourced from Duke Energy. Readings on this page refresh automatically as the agency publishes new data.

The highest level for Mountain Island Lake in our records is 654.50 ft on 2024-09-28. The lowest is 642.60 ft on 2025-01-21. Our record covers about 4 years of readings.

Compared with every October in our records, the current level is higher than 58% 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. Mountain Island Lake has risen 0.20 ft over the past 30 days. For the operational reason on any given week, check Duke Energy directly.

Mountain Island Lake is +0.20 ft compared with this date last year (644.00 ft today). The full-history chart above covers 4 years, with a record high of 654.50 ft and a record low of 642.60 ft.