Catalog of shoals by date
Catalog of shoals in the
St. Lawrence Waterway
Updated by the Navigable Waterways Management division
| Number | Date | Chart | Reference point | Center position |
Shoal location In reference to the channel limits |
Dimensions | |||
|---|---|---|---|---|---|---|---|---|---|
| Latitude | Longitude | Lenght | Width | Depth | |||||
|
Q5009/26 XHTML |
2026-04-22 | 1312 | S27 | 46-15-7.7 | 72-43-37.6 | From 0 to 12 meters North of the South limit of the channel | 1795 | 12 | 10.4 |
|
Q5008/26 XHTML |
2026-04-22 | 1312 | S27 | 46-15-8.1 | 72-43-37.7 | From 12 to 26 meters North of the South limit of the channel | 1778 | 14 | 11.0 |
|
Q5007/26 XHTML |
2026-04-22 | 1312 | S54 | 46-13-8.1 | 72-48-13.2 | From 0 to 14 meters South of the North limit of the channel | 33 | 14 | 10.6 |
|
Q5004/26 XHTML |
2026-04-22 | 1313 | C23 | 46-24-15.0 | 72-22-59.7 | From 0 to 24 meters North of the South limit of the anchorage area | 48 | 24 | 10.0 |
|
Q5003/26 XHTML |
2026-04-22 | 1313 | C23 | 46-24-16.6 | 72-23-1.0 | From 41 to 88 meters North of the South limit of the anchorage area | 10 | 47 | 10.6 |
|
Q5001/26 XHTML |
2026-04-22 | 1313 | C23 | 46-24-21.4 | 72-23-1.9 | From 156 to 225 meters North of the South limit of the anchorage area | 8 | 70 | 10.6 |
|
Q5006/26 XHTML |
2026-04-22 | 1313 | C23 | 46-24-14.3 | 72-23-4.8 | From 0 to 8 meters North of the South limit of the anchorage area | 175 | 8 | 7.7 |
|
Q5005/26 XHTML |
2026-04-22 | 1313 | C23 | 46-24-14.5 | 72-23-2.3 | From 0 to 20 meters North of the South limit of the anchorage area | 107 | 20 | 8.7 |
|
Q5002/26 XHTML |
2026-04-22 | 1313 | C23 | 46-24-20.3 | 72-22-58.1 | From 113 to 116 meters North of the South limit of the anchorage area | 2 | 2 | 10.5 |
|
Q5000/26 XHTML |
2026-04-21 | 1313 | C18 | 46-25-43.5 | 72-21-32.5 | From 54 to 73 meters South of the North limit of the channel | 12 | 19 | 11.1 |
|
Q5351/25 XHTML |
2025-11-13 | 1313 | C33 | 46-22-45.6 | 72-26-43.2 | From 10 to 18 meters North of the South limit of the channel | 13 | 8 | 10.9 |
|
Q5349/25 XHTML |
2025-11-12 | 1317 | K136 | 46-55-36.8 | 70-52-3.2 | From 132 to 134 meters South of the North limit of the channel | 2 | 3 | 12.4 |
|
Q5348/25 XHTML |
2025-11-12 | 1317 | K135 | 46-55-36.7 | 70-51-53.7 | From 0 to 8 meters North of the South limit of the channel | 3 | 8 | 12.3 |
|
Q5347/25 XHTML |
2025-11-12 | 1317 | K135 | 46-55-51.2 | 70-51-44.6 | From 60 to 117 meters North of the South limit of the channel | 43 | 57 | 12.2 |
|
Q5346/25 XHTML |
2025-11-12 | 1317 | K136 | 46-55-48.4 | 70-51-56.1 | From 0 to 123 meters South of the North limit of the channel | 300 | 123 | 12.3 |
|
Q5345/25 XHTML |
2025-11-12 | 1317 | K136 | 46-55-59.1 | 70-51-44.2 | From 39 to 141 meters South of the North limit of the channel | 240 | 102 | 12.3 |
|
Q5344/25 XHTML |
2025-11-07 | 1317 | K132 | 46-56-42.1 | 70-51-7.6 | From 0 to 16 meters South of the North limit of the channel | 3 | 16 | 12.3 |
|
Q5343/25 XHTML |
2025-11-07 | 1317 | K132 | 46-56-26.1 | 70-51-18.6 | From 72 to 100 meters South of the North limit of the channel | 6 | 29 | 12.1 |
|
Q5342/25 XHTML |
2025-11-06 | 1312 | S80 | 46-11-35.8 | 72-53-29.7 | From 40 to 42 meters South of the North limit of the channel | 2 | 3 | 11.2 |
|
Q5341/25 XHTML |
2025-11-05 | 1312 | S110 | 46-07-50.6 | 72-57-26.3 | From 0 to 10 meters South of the North limit of the channel | 578 | 10 | 10.0 |
|
Q5340/25 XHTML |
2025-11-05 | 1317 | K115 | 47-01-49.0 | 70-46-2.0 | From 79 to 132 meters North of the South limit of the channel | 137 | 53 | 12.2 |
|
Q5339/25 XHTML |
2025-11-05 | 1312 | S87 | 46-10-31.0 | 72-55-15.7 | From 8 to 33 meters North of the South limit of the channel | 178 | 26 | 11.2 |
|
Q5338/25 XHTML |
2025-11-05 | 1317 | K104 | 47-04-44.3 | 70-43-41.0 | From 6 to 8 meters South of the North limit of the channel | 2 | 2 | 12.4 |
|
Q5337/25 XHTML |
2025-11-05 | 1317 | K104 | 47-04-34.3 | 70-43-46.9 | From 0 to 37 meters South of the North limit of the channel | 10 | 37 | 11.9 |
|
Q5336/25 XHTML |
2025-11-05 | 1317 | K108 | 47-04-31.4 | 70-43-48.6 | From 18 to 25 meters South of the North limit of the channel | 3 | 7 | 12.4 |
|
Q5335/25 XHTML |
2025-11-04 | 1314 | Q54 | 46-38-54.8 | 71-45-19.4 | From 0 to 44 meters South of the North limit of the channel | 144 | 44 | 10.5 |
|
Q5334/25 XHTML |
2025-11-04 | 1314 | Q54 | 46-39-2.2 | 71-45-38.6 | From 0 to 7 meters South of the North limit of the channel | 8 | 7 | 10.5 |
|
Q5333/25 XHTML |
2025-11-04 | 1314 | Q54 | 46-39-5.1 | 71-45-48.1 | From 0 to 32 meters South of the North limit of the channel | 197 | 32 | 10.1 |
|
Q5332/25 XHTML |
2025-11-04 | 1314 | Q54 | 46-39-12.2 | 71-46-6.9 | From 0 to 6 meters South of the North limit of the channel | 18 | 6 | 10.6 |
|
Q5331/25 XHTML |
2025-11-04 | 1314 | Q54 | 46-39-20.2 | 71-46-30.6 | From 9 to 12 meters South of the North limit of the channel | 2 | 3 | 10.6 |
|
Q5330/25 XHTML |
2025-11-03 | 1314 | Q55 | 46-39-32.1 | 71-47-28.5 | From 0 to 6 meters North of the South limit of the channel | 13 | 6 | 10.4 |
|
Q5329/25 XHTML |
2025-10-30 | 1312 | S54 | 46-12-56.1 | 72-48-34.1 | From 126 to 128 meters South of the North limit of the channel | 2 | 2 | 11.2 |
|
Q5327/25 XHTML |
2025-10-23 | 1314 | D30 | 46-33-54.4 | 72-06-28.6 | From 106 to 141 meters South of the North limit of the channel | 141 | 34 | 10.6 |
|
Q5320/25 XHTML |
2025-10-23 | 1313 | BATA | 46-30-33.5 | 72-13-42.2 | From 0 to 61 meters North of the South limit of the anchorage area | 362 | 61 | 10.2 |
|
Q5321/25 XHTML |
2025-10-23 | 1313 | BATA | 46-30-27.9 | 72-13-48.1 | From 0 to 72 meters South of the North limit of the anchorage area | 665 | 72 | 9.5 |
|
Q5322/25 XHTML |
2025-10-23 | 1313 | BATA | 46-30-25.2 | 72-13-51.8 | From 0 to 30 meters South of the North limit of the anchorage area | 741 | 30 | 9.4 |
|
Q5323/25 XHTML |
2025-10-23 | 1313 | BATA | 46-30-11.4 | 72-14-1.1 | From 0 to 87 meters South of the North limit of the anchorage area | 1587 | 87 | 8.8 |
|
Q5324/25 XHTML |
2025-10-23 | 1313 | BATA | 46-30-7.3 | 72-14-8.0 | From 0 to 120 meters South of the North limit of the anchorage area | 1745 | 120 | 8.4 |
|
Q5325/25 XHTML |
2025-10-23 | 1313 | BATA | 46-30-28.1 | 72-13-42.9 | From 0 to 11 meters South of the North limit of the anchorage area | 17 | 11 | 10.3 |
|
Q5326/25 XHTML |
2025-10-23 | 1314 | D35 | 46-33-47.8 | 72-07-12.0 | From 103 to 112 meters North of the South limit of the channel | 181 | 9 | 10.6 |
|
Q5319/25 XHTML |
2025-10-22 | 1313 | D88 | 46-27-12.4 | 72-15-34.3 | From 0 to 2 meters North of the South limit of the channel | 2 | 2 | 11.2 |
|
Q5316/25 XHTML |
2025-10-16 | 1314 | Q57 | 46-40-0.1 | 71-48-47.3 | From 4 to 21 meters North of the South limit of the channel | 17 | 17 | 10.1 |
|
Q5315/25 XHTML |
2025-10-09 | 1313 | C43 | 46-22-14.7 | 72-28-48.9 | From 7 to 16 meters North of the South limit of the channel | 33 | 10 | 11.0 |
|
Q5309/25 XHTML |
2025-10-09 | 1313 | C27 | 46-22-57.3 | 72-25-52.4 | From 1 to 3 meters North of the South limit of the channel | 2 | 2 | 9.9 |
|
Q5308/25 XHTML |
2025-10-09 | 1313 | C34 | 46-22-49.0 | 72-26-23.3 | From 7 to 21 meters South of the North limit of the channel | 499 | 13 | 10.5 |
|
Q5310/25 XHTML |
2025-10-09 | 1313 | C30 | 46-22-51.9 | 72-26-8.9 | From 16 to 18 meters North of the South limit of the channel | 2 | 2 | 11.2 |
|
Q5311/25 XHTML |
2025-10-09 | 1313 | C41 | 46-22-26.3 | 72-28-15.6 | From 7 to 17 meters North of the South limit of the channel | 274 | 10 | 10.9 |
|
Q5312/25 XHTML |
2025-10-09 | 1313 | C41 | 46-22-29.9 | 72-28-2.6 | From 9 to 15 meters South of the North limit of the channel | 174 | 7 | 11.1 |
|
Q5313/25 XHTML |
2025-10-09 | 1313 | C43 | 46-22-18.0 | 72-28-40.2 | From 7 to 14 meters South of the North limit of the channel | 160 | 7 | 10.8 |
|
Q5314/25 XHTML |
2025-10-09 | 1313 | C43 | 46-22-17.7 | 72-28-40.4 | From 0 to 7 meters South of the North limit of the channel | 165 | 7 | 10.1 |
|
Q5306/25 XHTML |
2025-10-08 | 1313 | C28 | 46-23-11.4 | 72-25-45.7 | From 8 to 13 meters South of the North limit of the channel | 282 | 6 | 10.6 |
|
Q5305/25 XHTML |
2025-10-08 | 1313 | C28 | 46-23-11.6 | 72-25-45.9 | From 0 to 9 meters South of the North limit of the channel | 282 | 9 | 9.9 |
|
Q5304/25 XHTML |
2025-10-01 | 1311 | M17 | 45-54-41.6 | 73-13-1.6 | From 0 to 9 meters North of the South limit of the channel | 346 | 9 | 10.0 |
|
Q5303/25 XHTML |
2025-10-01 | 1311 | M17 | 45-54-41.6 | 73-13-1.2 | From 9 to 15 meters North of the South limit of the channel | 296 | 6 | 10.9 |
|
Q5302/25 XHTML |
2025-09-24 | 1311 | M76 | 45-49-49.4 | 73-17-31.4 | From 10 to 12 meters South of the North limit of the anchorage area | 2 | 2 | 10.7 |
|
Q5301/25 XHTML |
2025-09-24 | 1312 | YAMB | 46-12-27.5 | 72-49-8.9 | From 105 to 112 meters North of the South limit of the anchorage area | 351 | 7 | 10.4 |
|
Q5253/25 XHTML |
2025-09-04 | 1312 | YAMB | 46-12-32.1 | 72-48-52.4 | From 0 to 39 meters North of the South limit of the anchorage area | 1260 | 39 | 9.3 |
|
Q5254/25 XHTML |
2025-09-04 | 1312 | YAMB | 46-12-29.6 | 72-48-52.6 | From 0 to 13 meters North of the South limit of the anchorage area | 1195 | 13 | 7.4 |
|
Q5252/25 XHTML |
2025-09-04 | 1312 | YAMB | 46-12-30.7 | 72-48-52.3 | From 0 to 41 meters North of the South limit of the anchorage area | 1235 | 41 | 8.4 |
|
Q5250/25 XHTML |
2025-09-04 | 1312 | YAMB | 46-12-27.3 | 72-49-8.5 | From 93 to 106 meters North of the South limit of the anchorage area | 505 | 13 | 10.0 |
|
Q5226/25 XHTML |
2025-08-26 | 1313 | C34 | 46-22-48.7 | 72-26-23.3 | From 0 to 7 meters South of the North limit of the channel | 529 | 7 | 9.4 |
|
Q5223/25 XHTML |
2025-08-21 | 1313 | C52 | 46-20-25.7 | 72-32-18.6 | From 0 to 11 meters South of the North limit of the approach area | 72 | 11 | 8.5 |
|
Q5212/25 XHTML |
2025-08-21 | 1313 | C77 | 46-16-42.6 | 72-36-36.1 | From 5 to 7 meters North of the South limit of the channel | 3 | 2 | 11.1 |
|
Q5194/25 XHTML |
2025-08-19 | 1312 | S6 | 46-15-46.9 | 72-38-38.9 | From 5 to 7 meters North of the South limit of the channel | 2 | 2 | 10.6 |
|
Q5193/25 XHTML |
2025-08-14 | 1312 | S8 | 46-15-49.8 | 72-39-24.9 | From 0 to 2 meters North of the South limit of the channel | 2 | 2 | 11.1 |
|
Q5192/25 XHTML |
2025-08-14 | 1313 | C77 | 46-16-45.7 | 72-36-30.5 | From 6 to 8 meters North of the South limit of the channel | 2 | 2 | 11.1 |
|
Q5186/25 XHTML |
2025-08-11 | 1314 | D59 | 46-31-23.7 | 72-12-5.6 | From 7 to 15 meters North of the South limit of the channel | 45 | 8 | 10.9 |
|
Q5162/25 XHTML |
2025-07-11 | 1313 | D67 | 46-30-33.2 | 72-13-20.6 | From 0 to 16 meters South of the North limit of the channel | 44 | 16 | 10.9 |
|
Q5159/25 XHTML |
2025-07-04 | 1314 | Q68 | 46-38-55.7 | 71-54-32.1 | From 2 to 5 meters South of the North limit of the channel | 2 | 3 | 10.4 |
|
Q5158/25 XHTML |
2025-07-04 | 1314 | Q77 | 46-37-17.7 | 71-56-56.7 | From 0 to 8 meters North of the South limit of the channel | 45 | 8 | 10.1 |
|
Q5157/25 XHTML |
2025-07-04 | 1314 | Q77 | 46-37-10.1 | 71-57-11.7 | From 0 to 22 meters South of the North limit of the channel | 631 | 22 | 8.2 |
|
Q5156/25 XHTML |
2025-07-04 | 1314 | Q84 | 46-35-56.4 | 71-59-50.6 | From 5 to 8 meters South of the North limit of the channel | 3 | 3 | 10.3 |
|
Q5141/25 XHTML |
2025-06-18 | 1312 | S22 | 46-15-53.9 | 72-42-4.1 | From 0 to 27 meters South of the North limit of the channel | 103 | 27 | 11.1 |
|
Q5135/25 XHTML |
2025-06-13 | 1314 | D22 | 46-34-0.4 | 72-04-13.2 | From 0 to 5 meters South of the North limit of the channel | 107 | 5 | 10.5 |
|
Q5131/25 XHTML |
2025-06-12 | 1312 | S13 | 46-15-43.6 | 72-40-31.8 | From 14 to 18 meters North of the South limit of the channel | 5 | 4 | 11.2 |
|
Q5130/25 XHTML |
2025-06-12 | 1312 | S17 | 46-15-45.2 | 72-41-7.5 | From 6 to 15 meters North of the South limit of the channel | 23 | 9 | 11.1 |
|
Q5072/25 XHTML |
2025-05-22 | 1312 | YAMB | 46-12-22.9 | 72-49-17.3 | From 0 to 28 meters South of the North limit of the anchorage area | 209 | 28 | 8.9 |
|
Q5069/25 XHTML |
2025-05-22 | 1312 | S63 | 46-12-22.3 | 72-49-19.6 | From 0 to 40 meters North of the South limit of the anchorage area | 235 | 40 | 8.3 |
|
Q5068/25 XHTML |
2025-05-22 | 1312 | S63 | 46-12-21.7 | 72-49-22.8 | From 0 to 41 meters North of the South limit of the anchorage area | 274 | 41 | 6.9 |
|
Q5067/25 XHTML |
2025-05-22 | 1312 | S63 | 46-12-25.3 | 72-49-35.7 | From 28 to 51 meters North of the South limit of the anchorage area | 78 | 24 | 9.2 |
|
Q5066/25 XHTML |
2025-05-22 | 1312 | S63 | 46-12-24.2 | 72-49-34.8 | From 0 to 29 meters North of the South limit of the anchorage area | 264 | 29 | 7.1 |
|
Q5043/25 XHTML |
2025-05-14 | 1311 | M57 | 45-50-14.5 | 73-16-51.1 | From 0 to 6 meters North of the South limit of the anchorage area | 72 | 6 | 10.5 |
|
Q5030/25 XHTML |
2025-05-08 | 1310 | M191 | 45-32-12.2 | 73-31-50.7 | From 0 to 6 meters North of the South limit of the channel | 52 | 6 | 10.9 |
|
Q5031/25 XHTML |
2025-05-08 | 1310 | M187 | 45-33-2.9 | 73-31-7.2 | From 20 to 22 meters North of the South limit of the channel | 2 | 2 | 10.9 |
|
Q5029/25 XHTML |
2025-05-08 | 1310 | M191 | 45-32-8.9 | 73-31-53.6 | From 0 to 8 meters North of the South limit of the channel | 18 | 8 | 10.8 |
|
Q5024/25 XHTML |
2025-05-07 | 1310 | PATG | 45-37-50.5 | 73-29-3.9 | From 0 to 7 meters North of the South limit of the anchorage area | 53 | 7 | 11.0 |
|
Q5025/25 XHTML |
2025-05-07 | 1310 | M163 | 45-36-37.1 | 73-29-57.8 | From 0 to 7 meters North of the South limit of the anchorage area | 92 | 7 | 8.5 |
|
Q5026/25 XHTML |
2025-05-07 | 1310 | MEB | 45-36-39.4 | 73-29-50.4 | From 0 to 6 meters North of the South limit of the anchorage area | 45 | 6 | 8.6 |
|
Q5020/25 XHTML |
2025-05-01 | 1310 | LGLA | 45-33-33.7 | 73-30-47.3 | From 11 to 13 meters North of the South limit of the channel | 2 | 2 | 10.9 |
|
Q5019/25 XHTML |
2025-05-01 | 1310 | LGLA | 45-33-30.1 | 73-30-49.4 | From 0 to 2 meters South of the North limit of the channel | 2 | 2 | 10.9 |
Measurements are given in meters
Water depths are given in reference to chart datum
Last data update: 2026-04-22 19:21
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