NW-C-0288-26
Received: 27 May 2025, 00:00Updated: 2 Nov 2026, 01:50
analysis
ExpiredShoal confirmed between Trois-Rivières and Donnacona (St. Lawrence River)
A shoal has been confirmed in the St. Lawrence River between Trois-Rivières and Donnacona. The shoal area is defined by four positions with a reported least depth of 10.5 m. Reference made to Shoals number Q5083/25. Mariners should consult charts and local notices for passage planning.
Navigate with caution and consult updated charts and local notices for the reported shoal.
- Type
- Navigational hazard · severity moderate
- Feed
- Wrecks, obstructions and drifting objectsAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/hazards/
- Location
- Trois-Rivières to Donnacona, St. Lawrence River
- Validity
- From 27 May 2025, 17:50 UTC
Date 2025-05-27 17:50 UTC. In Force Shoals number Q5083/25 refers. - Hazards
- shoal, shallow depth
- Least depth
- 10.5 m (34 ft)
- References
- Shoals number Q5083/25
- Charts
- 1313(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada54 NM from the area
- RCCRCC BostonUnited States250 NM from the area
- RCCJRCC TrentonCanada257 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM3 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM37 NM from the area
- DSCDSC Station Mont BelairJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM44 NM from the area
- DSCDSC Station QuebecJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM54 NM from the area
- DSCDSC Station LauzonJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM56 NM from the area
Generated automatically from the warning text on 28 Sept 2026, 19:47 UTC. It can be wrong: the original warning below is the authoritative text.
Keywords
- Geometry refsbounded, polygon
- Geometry phrasesarea bounded, bounded by
Message content
NW-C-0288-26
Date
2025-05-27 17:50 UTC
Status
Published
Title
Waterway Information
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 24.338N 72 22.968W
46 24.338N 72 22.969W
46 24.339N 72 22.970W
46 24.339N 72 22.969W
Depth: 10.5m
In Force Shoals number Q5083/25 refers.
Position
Centroid : 46° 24.338'N 072° 22.969'W
Pt 1: 46° 24.338'N 072° 22.968'W
Pt 2: 46° 24.338'N 072° 22.969'W
Pt 3: 46° 24.339'N 072° 22.970'W
Pt 4: 46° 24.339'N 072° 22.969'W
Charts
1313(NAD83)