It will soon be possible to view the water level at La Rochelle port in real time on this page.
In the meantime, here is the estimated water level (in metres) in relation to the tidal range at La Rochelle.
Please note : when the water level is displayed in real time,
| Coefficient | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
| Low waters | 3,20 | 2,90 | 2,60 | 2,30 | 2,00 | 1,70 | 1,40 | 1,10 | 0,80 | 0,50 | 0,15 |
| High waters | 4,30 | 4,50 | 4,80 | 5,00 | 5,20 | 5,45 | 5,70 | 5,90 | 6,10 | 6,40 | 6,70 |
| Bassin | Opening | Closure |
| Flood tank ( or “of Yachts”) | 2h30 before high waters | 1h00 after high waters |
| Bassin des Chalutiers | 2h00 before high waters | 1h30 after high waters |