Lake Blalock water level — South Carolina
Lake Blalock in South Carolina was last measured at 710.11 ft (datum NAVD88), as of Aug 31, 2026, 3:00 AM (UTC-04:00) (USGS Water Services). Over its recent trend window the level has been rising (+0.3 ft). This reading is provisional and subject to revision.
- % of conservation pool full
- Not reported
- Storage
- Not reported
- Recent trend
- ↑Rising
+0.3 ft over the trend window
Recent trend
Readings this station published between Jun 2, 2026 and Aug 31, 2026 — a 89-day window — downsampled for display.
Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).
Source: USGS site 021556524, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →
About this gauge's record
This site's drainage basin covers approximately 273 sq mi of contributing watershed.
The dam behind Lake Blalock
Lake Blalock is held back by H Taylor Blalock Reservoir Dam , standing 72 ft high , built across PACOLET RIVER in Spartanburg County , and is owned by CITY OF SPARTANBURG (a local government owner) .
Its recorded primary purpose is water supply — delivering water to its customers comes first, so drawdown here follows demand as much as it follows rainfall .
NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. Its most recent condition assessment was fair: sound under normal loading, though a rare or extreme event could expose a deficiency. That assessment is dated 04/05/2023.
At its normal pool the reservoir covers about 760 acres. NID records a maximum storage of 20,000 acre-ft against a normal storage of 14,200 acre-ft. It is regulated by SC DHEC.
Dam facts: National Inventory of Dams record SCD04006 , filed by South Carolina — U.S. Army Corps of Engineers, public domain. Water levels above come from USGS Water Services and are a separate source. (How this dam was matched to this gauge →)
How Lake Blalock compares nearby
5 of 6 nearby lakes with a current trend are also rising right now.
Nearby lakes
The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.
| Lake | State | Level | Distance |
|---|---|---|---|
| Lake William C. Bowen | SC | 814.73 ft | 17 km |
| Tyger Lake | SC | 710.95 ft | 21 km |
| Ninetynine Island Reservoir | SC | 509.45 ft | 34 km |
| Neal Shoals Reservoir | SC | 332.68 ft | 58 km |
| Monticello Reservoir | SC | 423.06 ft | 97 km |
| Lake Greenwood | SC | 438.45 ft | 98 km |
Frequently asked questions
- What is the current water level of Lake Blalock?
- As of Aug 31, 2026, 3:00 AM (UTC-04:00), the pool elevation was 710.11 ft (datum NAVD88), provisional and subject to revision. See the trend chart above for the recent direction.
- Is Lake Blalock full right now?
- Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
- Where does this data come from?
- From USGS site 021556524, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).
More in South Carolina
See every lake tracked in South Carolina, or read the methodology behind these figures.