Lake Blalock Water Level
South Carolina · updated daily from the U.S. Geological Survey
710.63 ft
Lake Blalock is high for this time of year and falling (-0.44 ft in the last 7 days).
Change since yesterday: -0.10 ft
Reading as of 2026-08-14 · higher than 98% of August readings on record
Where Lake Blalock sits historically
Today's level compared with every reading in our 28.5-year record for this lake.
Since yesterday
-0.10 ft
7-day change
-0.44 ft
30-day change
+1.74 ft
1-year change
-0.24 ft
Last 30 days
Last 12 months
Full history (28.5 years)
Lake Blalock records and averages
| Current level | 710.63 ft |
|---|---|
| Record high | 713.77 ft (2024-09-28) |
| Record low | 676.45 ft (2004-11-23) |
| Average of all readings | 705.98 ft |
| Data span | 28.5 years (10,249 readings) |
Frequently asked questions
Is Lake Blalock full right now?
As of 2026-08-14, Lake Blalock sits at 710.63 ft, which is high for this time of year.Over the past 30 days the level has risen 1.74 ft.
What is the water level at Lake Blalock today?
The most recent reading is 710.63 ft (2026-08-14), sourced from the U.S. Geological Survey. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Lake Blalock has ever been?
The highest level in our records is 713.77 ft on 2024-09-28. The lowest is 676.45 ft on 2004-11-23. Our record covers about 28.5 years of readings.
Is Lake Blalock low for this time of year?
Compared with every August in our records, the current level is higher than 98% of them — 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.
Why is Lake Blalock low right now?
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 Blalock has risen 1.74 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has Lake Blalock changed over the past year?
The level is -0.24 ft compared with this date last year (710.63 ft today). The full-history chart above covers 28.5 years, with a record high of 713.77 ft and a record low of 676.45 ft.
Nearby lakes in South Carolina
Source: the U.S. Geological Survey. Readings are provisional and subject to revision by the publishing agency. All South Carolina lake levels.