Jersey land reclamation 'little impact' on tide pattern
Land reclamation in St Helier has not significantly changed the tidal patterns around Jersey, according to Transport and Technical Services (TTS).
The department is gathering information to make sure the island is protected from sea erosion.
A survey ship from St Andrew's University assessed sea defences as well as the seabed to see where further protection was needed.
Chris Samson, of TTS, said reclamation had changed tidal patterns a little.
Mr Samson said the changes were not enough to have a significant impact in the long term.
He said more sea wall defences would be needed in the next 10-20 years to deal with rising sea levels and climate change and that the current £1m budget should be enough.
"We are talking about long-term planning here. We don't know what these structures will look like, we have done the survey work and that will follow into the design."