NW-C-4722-26
Canadian Hydrographic Service water level stations out of service between Montréal and Trois-Rivières
Warning text
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No longer in forceSeveral Canadian Hydrographic Service water level stations used to calculate under-keel clearance on the St. Lawrence River are out of service. The affected area is between Montréal and Trois-Rivières. Positions of the out-of-service stations are listed in the message. No end time is given.
Navigate with caution and allow increased under-keel safety margins. Use alternative water level or tidal information where available and contact the Canadian Hydrographic Service for updates before transits requiring precise under-keel clearance.
- Type
- Aids to navigation · severity moderate
- Feed
- Aids to navigationAll warnings of this kind on the map, or as an API feed.
- Location
- Montréal to Trois-Rivières
- Validity
- From 07 Nov 2026, 09:40 UTC
2026-11-07 09:40 UTC (published) - Hazards
- water level stations out of service, reduced capability to calculate under-keel clearance
- Charts
- 1310(NAD83), 1310(NAD83), 1311(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada108 NM from the area
- RCCJRCC TrentonCanada204 NM from the area
- RCCRCC BostonUnited States229 NM from the area
- DSCDSC Station Mont-St. BrunoJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM14 NM from the area
- DSCDSC Station MontrealJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM18 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM19 NM from the area
- DSCDSC Station L’AcadieJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM28 NM from the area
- DSCDSC Station Mont RigaudJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM45 NM from the area
Worked out automatically from the warning text on 07 Nov 2026, 10:07 UTC. It can be wrong: the official warning text is the authority.