Upper Mississippi: USCG Notice to Mariners LNM 18-22
NOTICE TO MARINERS
Upper Mississippi River
SECTION I - SPECIAL NOTICES
This section contains information of special concern to the Mariner.
UPPER MISSISSIPPI RIVER - CHANNEL CONDITION/SAFETY ADVISORY – UPDATE
The following areas are in the high water watch phase IAW the Western Rivers WAP Annex:
Zone 24 (Mile 301.1 – Mile 273.4),
Zone 28 (Mile 185.4 – Mile 160.1) and
Zone 29 (Mile 160.0 – Mile 109.9).
Towing vessels are advised to favor the center of the channel and proceed at their slowest safe speed to minimize their wake, based on prevailing conditions, to minimize wake damage to personal property. Towboat operators should be experienced in high water operations, exercise caution in all passing and meeting situations and be mindful of all charted bridge navigational clearances. Down-streaming operations are not recommended. Drift and debris may pose navigation obstructions. Buoys may have been dragged off station, so remain cautious while transiting.