Nantachie Lake water level — Louisiana
Nantachie Lake in Louisiana was last measured at 94.82 ft (datum NGVD29), as of Aug 31, 2026, 2:00 AM (UTC-05:00) (USGS Water Services). Over its recent trend window the level has been falling (−0.4 ft). This reading is provisional and subject to revision.
- % of conservation pool full
- Not reported
- Storage
- Not reported
- Recent trend
- ↓Falling
−0.4 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 07353520, 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 80 sq mi of contributing watershed.
The dam behind Nantachie Lake
Nantachie Lake is held back by Nantachie Lake Dam , an earthfill embankment, holding the pool back by sheer mass and an impervious core rather than by the strength of concrete , standing 41 ft high and running 1,150 ft along its crest , built across Nantachie Creek in Grant County , near Aloha . It was completed in 1964 , and is owned by State of Louisiana (a local government owner) , to a design credited to LA Dept of Public Works.
Its recorded primary purpose is recreation — holding a stable pool through the season is an operating goal, so a level well off normal in summer is unusual rather than routine .
It is founded on soil, with a earth core. Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. The spillway opening is 150 ft wide. Its outlet works use slide (sluice gate).
NID classes it low hazard potential: a failure would be expected to damage little beyond the owner's own property. It is a consequence rating, not a condition rating. 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 08/12/2024.
At its normal pool the reservoir covers about 1,580 acres. NID records a maximum storage of 35,500 acre-ft against a normal storage of 11,200 acre-ft. Its maximum discharge capacity is 19,600 cubic feet per second. It is regulated by LA DOTD.
Dam facts: National Inventory of Dams record LA00025 , filed by Louisiana — 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 Nantachie Lake compares nearby
2 of 6 nearby lakes with a current trend are also falling right now.
Nearby lakes
The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.
| Lake | State | Level | Distance |
|---|---|---|---|
| Red Lock and Dam #3 Upper | LA | 95.06 ft | 11 km |
| Red Lock and Dam #3 Lower | LA | 64.68 ft | 11 km |
| Red Lock and Dam #4 Lower | LA | 95.20 ft | 59 km |
| Grand Bayou Reservoir | LA | 137.69 ft | 60 km |
| Catahoula Lake Center | LA | 26.17 ft | 63 km |
| Catahoula Structure Landside | LA | 26.20 ft | 65 km |
Frequently asked questions
- What is the current water level of Nantachie Lake?
- As of Aug 31, 2026, 2:00 AM (UTC-05:00), the pool elevation was 94.82 ft (datum NGVD29), provisional and subject to revision. See the trend chart above for the recent direction.
- Is Nantachie Lake 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 07353520, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).
More in Louisiana
See every lake tracked in Louisiana, or read the methodology behind these figures.