30 Apr 2025

MKARNS Nav Notice No. SWL 25-29 Lock 1 Nav Pass Closed (Over Weir)

The tailwater elevation at Norrell Lock (No. 1) NM 10.3 has dropped below 155.0 feet, so the navigation pass over the weir is closed. All vessels will be directed to transit through the lock chamber with pinned open gates while the tailwater elevation remains above 143.0 feet.

4 Nov 2024

MKARNS Nav Notice No. SWL 24- 82 Sailing Instruction Lifted NM 256.1 to NM 256.4

Crews have completed digging and clamming operations from NM 256.1 to NM 256.4 and in the downstream approach at Ozark Lock (No. 12) NM 256.8. The sailing instructions, as stated in Navigation Notice No. SWL 23-36, have been lifted.