Ark River - Lock 01 water level — Arkansas

Arkansas · USACE · reading Jul 14, 2026, 5:00 PM (UTC+00:00)

Ark River - Lock 01 in Arkansas was last measured at 143.06 ft (datum NGVD29), as of Jul 14, 2026, 5:00 PM (UTC+00:00) (USACE CWMS Data). Over its recent trend window the level has been steady (+0.1 ft). Figures are provisional readings for reference — not for navigation or safety decisions.

Current reading Ark River - Lock 01 · Arkansas
Pool elevation
143.06 ft

Datum NGVD29. Datums vary by station (NGVD29 vs. NAVD88 differ by roughly half a foot to a foot) — never compare bare elevations across lakes without checking the datum.

% of conservation pool full
Not reported
Storage
Not reported
Recent trend
→Steady

+0.1 ft over the trend window

Recent trend

The last ~21 days of readings at this station, downsampled for display.

143.4ft142.7ftApr 15 – May 6

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-07-14. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Important — not for navigation or safety decisions

Water levels here are provisional readings for general reference only. Conditions vary and readings can be revised. Always confirm current conditions with the managing agency before making navigation, boating, or dam-safety decisions.

Source: USACE SWL/Lock_01-Headwater, retrieved Jul 14, 2026, 10:55 PM (UTC+00:00). Official page for this lake →

Nearby lakes

The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.

Lakes nearest to Ark River - Lock 01, with current level and distance.
Lake State Level Distance
Ar Post Canal Lock 2 AR 162.11 ft 5 km
Dam 02 AR 161.88 ft 12 km
Mont Pt Lock & Dam AR 132.74 ft 13 km
Garrett Bridge AR 151.07 ft 46 km
Joe Hardin Lock & Dam 03 - Hw AR 182.05 ft 47 km
Lock & Dam 03 - Lock Chamber AR 172.67 ft 47 km

Frequently asked questions

What is the current water level of Ark River - Lock 01?
As of Jul 14, 2026, 5:00 PM (UTC+00:00), the pool elevation was 143.06 ft (datum NGVD29). See the trend chart above for the recent direction.
Is Ark River - Lock 01 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 SWL/Lock_01-Headwater, retrieved Jul 14, 2026, 10:55 PM (UTC+00:00). See the official link and the methodology page for the full source and update cadence.
Is this safe to use for boating or navigation?
No. Levels here are provisional readings for general reference only — not for navigation, dam-safety, or other safety decisions. Always confirm current conditions with the managing agency before making those calls.

More in Arkansas

See every lake tracked in Arkansas, or read the methodology behind these figures.