Mc-Kerr Arkansas Riv Nav Sys · MK-21
W D Mayo Lock and Dam
Wait-time history, barge traffic and lock information for W D Mayo Lock and Dam on the Mc-Kerr Arkansas Riv Nav Sys. Includes data coverage and source definitions.
- Waterway
- Mc-Kerr Arkansas Riv Nav Sys
- Location
- SPIRO, OK
- River mile
- 319.6
- Chamber length (ft)
- 600.0
- Chamber width (ft)
- 110.0
- Opened
- 1970.0
Recorded traffic and wait times
| Lock | Waterway | Lockages | Barges | Median commercial wait |
|---|---|---|---|---|
| W D Mayo Lock and Dam (MK-21) | Mc-Kerr Arkansas Riv Nav Sys | 51 | 193 | 0.00 h |
90th-percentile commercial wait: 0.00 hours. Commercial lockages recorded: 42.
Recorded arrivals: 2026-09-05T04:10 to 2026-10-04T14:30 (CST, as reported).
No live status available for this lock.
Page data built 2026-10-05T14:21:30Z. Wait means arrival to start of lockage. Recent completed passages may understate delays while other tows remain waiting. See definitions and limitations.
Other locks on this waterway
- Arthur V Ormond L and D (MK-09)
- Chouteau Lock and Dam (MK-24)
- Col Charles D Maynard (MK-05)
- Dardanelle Lk and Dam (MK-10)
- David D Terry Lock and Dam (MK-06)
- Emmett Sanders Lock and Dam (MK-04)
- James W. Trimble Lock and Dam (MK-13)
- Joe Hardin Lock and Dam (MK-03)
- Montgomery Point Lock and Dam (MK-99)
- Murray Lock and Dam (MK-07)
- Newt Graham Lock and Dam (MK-25)
- Norrell Lock and Dam (MK-01)
- Ozark Lock and Dam (MK-11)
- Rbrt S Kerr Lk and Dam and Res (MK-22)
- Toad Suck Ferry Lock and Dam (MK-08)
- Webbers Falls Lock and Dam (MK-23)
- Wilbur D Mills Lock and Dam (MK-02)