Here is another nice anecdote about sea level not being sea level: https://www.science20.com/news_articles/what_happens_bridge_when_one_side_uses_mediterranean_

Here is another nice anecdote about sea level not being sea level: https://www.science20.com/news_articles/what_happens_bridge_when_one_side_uses_mediterranean_sea_level_and_another_north_sea-121600 https://www.science20.com/news_articles/what_happens_bridge_... (The article doesn't actually mention what happend, according to german wikipedia, the error was spotted early and the moderate costs for the correction efforts were covered by the architects' insurance policy.)