Rising Sea Levels – The Climate Debate

Written by Daniel Fitzhenry – Hydrographic Surveyor

The seas and oceans to the east of Australia forms the largest body of water on Earth.  This broadly connected vast body of water presents a genuine sea level.  The Sydney Fort Denison Recording Station provides stable, accurate and genuine mean sea level data.

The following table shows mean sea levels at 10 year intervals and these levels are related to Chart Datum which is at the lowest spring tide level.


                                1914 – 1.11 metres

1924 – 0.98 metres

1934 – 0.98 metres

1944 – 0.97 metres

1954 – 1.00 metres

1964 – 1.09 metres

1974 – 1.09 metres

1984 – 1.02 metres

1994 – 1.04 metres

2004 – 1.08 metres

2014 – 1.12 metres

2019 – 1.05 metres


Accordingly, the mean sea level at Sydney in 2019 is 6 centimetres lower than the mean sea level at Sydney in 1914 when the Bureau Of Meteorology commenced recording Mean Sea Level.  

High Sea Levels during Storm, Cyclone & Low Pressure Events. 

Ill-informed commentators have asserted that sea levels may permanently rise by 1 to 2 metres in the next 100 years.  100 years of records on the largest water body on Earth indicates that this is incorrect.

There have always been short period storm and low pressure rises in sea levels.  The highest recorded sea level at Sydney occurred during the 1974 low pressure storm.  The sea level rose to 30 cm above high spring tide level for one day.  During recorded history there has been no indication whatsoever of a 100 to 200 cm permanent rise in sea level.  

There will always be short period storm, cyclone and low pressure rises in sea levels in close proximity to cyclone and storm centres.  These storm centre rises in sea levels are not permanent. 

Ocean swells and storm waves can exceed 16 metres during major storm surge events.  It is these massive waves that have caused significant damage to coastal and island communities in the past.   It is certain that huge storm event waves will occur in the future and will cause significant damage to the island and low lying communities.  Coastline and flood zone protection is the sane answer to storm event damage. 

It is polite and essential that the world population should avoid incorrect climate nonsense.  We need to divert the alarmist energy to caring for the planet.  Cease polluting the oceans.  Prevent development of flood prone land and threatened coastal zones that have been, and will always be, subject to flooding.



Dan Fitzhenry.

Capt. Daniel Fitzhenry – CPHS1 Hydrographic Surveyor – Registered Surveyor – Dip. Environmental Studies (Macq.)

Email: fitzynet@bigpond.net.au 

Steven Fitzhenry – B.Eng. (Civil) Sydney – MIE Aust. – Maritime Civil & Structural Engineer – Project Manager

Capt. Adam Fitzhenry – B. Eng. Honours (Civil) Syd, MBA AGSM – Maritime Civil & Structural Engineer – Oceanographer

Ellie Fitzhenry – B.Sc (Sydney) – Marine Biology & Ecology – Marine Science

Capt. Paul McGaw – ROV Operations Manager – Electrical & Mechanical Engineer

Tracey Hay – B.A (Macq) – Project Coordinator – IT, Statistics & Research Manager


Comments (4)

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    Why do these folk assume that one measurement is correct?

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      Judy Ryan


      Dear Gkam (1) Why shouldn’t they assume that the historical recordings from that particular water level gauge are correct? It’s a sturdy reliable instrument.(2) The evidence will show that; that particular gauge is one of the many thousands of water level gauges, all recording the same non-event of sea level rising.

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      If you are spooked about the fake news regarding sea levels, don’t go to Holland. It will scare the sheets off your clothes line.
      Fake temperatures, fake rainfall, fake droughts AND NOW (drum roll), fake sea levels.

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      Judy Ryan


      Hey Gkam, you have gone very quiet. Toorightmate is right you know. To see the fake temperatures go to bit.ly/tgm-j and scroll down. I challenge you to address the content of the posters and prove any of it wrong.You are probably an open minded clever person. Therefore, once you see the evidence you will realise that whatever the climate is, or is not doing, there is a massive political scam going on. Then you might join us in our fight. We welcome independent thinkers who have the courage to speak out.

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