Felsenthal Lock and Dam Lower water level — Arkansas
Felsenthal Lock and Dam Lower in Arkansas was last measured at 50.52 ft (datum NGVD29), as of Aug 22, 2026, 1:15 PM (UTC+00:00) (USACE CWMS Data). Over its recent trend window the level has been falling (−5.8 ft).
- % of conservation pool full
- Not reported
- Storage
- Not reported
- Recent trend
- ↓Falling
−5.8 ft over the trend window
Recent trend
Readings this station published between Jun 2, 2026 and Jun 7, 2026 — a 5-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: USACE MVK/Felsenthal L&D-Lower, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →
The dam behind Felsenthal Lock and Dam Lower
Felsenthal Lock and Dam Lower is held back by Felsenthal Lock and Dam , a concrete gravity structure, resisting the reservoir by its own weight alone , standing 105 ft high and running 659 ft along its crest , built across OUACHITA in Union County , near STERLINGTON . It was completed in 1978 , and is owned by USACE - Vicksburg District (a federal owner) , to a design credited to CEMVK.
Its recorded primary purpose is navigation — the pool is held inside a narrow band to keep a navigable depth, so large swings are rare by design . It also serves navigation;recreation;water supply.
It is founded on soil, with a earth core. Its spillway is gated, so the operator can hold the pool above the spillway crest and meter what leaves. The spillway opening is 350 ft wide.
NID classes it significant hazard potential: a failure would be expected to damage property and infrastructure rather than cost lives. It is a consequence rating, not a condition rating.
At its normal pool the reservoir covers about 22,730 acres. NID records a maximum storage of 76,700 acre-ft against a normal storage of 56,300 acre-ft. Its maximum discharge capacity is 200,000 cubic feet per second.
Dam facts: National Inventory of Dams record AR01514 , filed by US Army Corps of Engineers — U.S. Army Corps of Engineers, public domain. Water levels above come from USACE CWMS Data and are a separate source. (How this dam was matched to this gauge →)
Other gauges at this site
A second gauge reports at this same structure. Its readings are listed here rather than on a separate page, because it measures the same water.
| Gauge | Source | Elevation | Storage |
|---|---|---|---|
| Felsenthal Lock and Dam Upper | USACE MVK/Felsenthal L&D-Upper | 65.27 ft (NGVD29) | — |
How Felsenthal Lock and Dam Lower compares nearby
4 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 |
|---|---|---|---|
| Felsenthal Lock and Dam Upper | AR | 65.27 ft | 0 km |
| Bayou Darbonne Lake | LA | 79.71 ft | 43 km |
| Thatcher Lock and Dam Upper | AR | 77.30 ft | 44 km |
| Big Bayou | AR | 101.02 ft | 71 km |
| Lake Claiborne | LA | 184.76 ft | 81 km |
| Ditch Bayou Dam | AR | 105.27 ft | 86 km |
Frequently asked questions
- What is the current water level of Felsenthal Lock and Dam Lower?
- As of Aug 22, 2026, 1:15 PM (UTC+00:00), the pool elevation was 50.52 ft (datum NGVD29). See the trend chart above for the recent direction.
- Is Felsenthal Lock and Dam Lower 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 USACE MVK/Felsenthal L&D-Lower, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).
More in Arkansas
See every lake tracked in Arkansas, or read the methodology behind these figures.