NW-C-0294-26
Received: 4 Jul 2025, 00:00Updated: 2 Nov 2026, 01:50
analysis
ActiveShoal (10.1 m) in St. Lawrence between Trois-Rivières and Donnacona
A shoal with least depth 10.1 m has been confirmed in the St. Lawrence River between Trois-Rivières and Donnacona. The feature is bounded by four positions with centroid 46°37.294'N 071°56.945'W. Chart 1314 (NAD83) is affected. Shoals number Q5158/25 refers and the information is in force.
Navigate with caution, consult chart 1314 (NAD83) and allow appropriate under-keel clearance for your vessel's draft.
- 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
- Validity
- From 04 Jul 2025, 17:05 UTC
Shoal located in area bounded by: 46 37.300N 71 56.929W ... In Force Shoals number Q5158/25 refers. - Hazards
- shoal, shallow depth
- Least depth
- 10.1 m (33 ft)
- References
- Shoals number Q5158/25
- Charts
- 1314(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada33 NM from the area
- RCCRCC BostonUnited States259 NM from the area
- RCCJRCC TrentonCanada279 NM from the area
- DSCDSC Station Mont BelairJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM22 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM25 NM from the area
- DSCDSC Station QuebecJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM32 NM from the area
- DSCDSC Station LauzonJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM34 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM59 NM from the area
Generated automatically from the warning text on 28 Sept 2026, 19:37 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-0294-26
Date
2025-07-04 17:05 UTC
Status
Published
Title
Waterway Information
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 37.300N 71 56.929W
46 37.285N 71 56.957W
46 37.289N 71 56.961W
46 37.303N 71 56.932W
Depth: 10.1m
In Force Shoals number Q5158/25 refers.
Position
Centroid : 46° 37.294'N 071° 56.945'W
Pt 1: 46° 37.300'N 071° 56.929'W
Pt 2: 46° 37.285'N 071° 56.957'W
Pt 3: 46° 37.289'N 071° 56.961'W
Pt 4: 46° 37.303'N 071° 56.932'W
Charts
1314(NAD83)