NW-C-1110-26
PAN PANReceived: 29 Apr 2026, 00:00Updated: 2 Nov 2026, 01:50
analysis
ActiveShoal (10.0 m) reported between Trois-Rivières and Donnacona
A shoal with least depth 10.0 m has been discovered in the St. Lawrence River between Trois-Rivières and Donnacona. The shoal is defined by four positions with centroid 46°24.250'N 072°22.995'W. Charted on chart 1313 (NAD83). This notice cancels NW-C-0286-26.
Navigate with caution and avoid the shoal area; consult chart 1313 and update passage planning accordingly.
- Type
- Wreck / obstruction · 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 29 Apr 2026, 20:37 UTC
Date 2026-04-29 20:37 UTC; In Force - Hazards
- shoal, shallow depth
- Least depth
- 10 m (33 ft)
- Cancels
- NW-C-0286-26
- 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, 17:09 UTC. It can be wrong: the original warning below is the authoritative text.
Keywords
- Geometry refsbounded, polygon
- Dangerous AreaDANGER
- Geometry phrasesarea bounded, bounded by
Message content
NW-C-1110-26
Date
2026-04-29 20:37 UTC
Status
Published
Title
Newly Discovered Dangers
Cancels
NW-C-0286-26
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 24.242N 72 22.978W
46 24.245N 72 23.015W
46 24.258N 72 23.013W
46 24.255N 72 22.976W
Depth: 10.0m
In Force Shoals number Q5004/26 refers.
Position
Centroid : 46° 24.250'N 072° 22.995'W
Pt 1: 46° 24.242'N 072° 22.978'W
Pt 2: 46° 24.245'N 072° 23.015'W
Pt 3: 46° 24.258'N 072° 23.013'W
Pt 4: 46° 24.255'N 072° 22.976'W
Charts
1313(NAD83)