Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

What is the conversion from NGVD29 to NAVD88?

April 26, 2017conversion navd88 NGVD29

0

Posted

What is the conversion from NGVD29 to NAVD88?

1 Answer

0

Posted

Because of crustal motion in Louisiana, such a determination is impossible in the 21st century. Subsidence due to crustal motion is a fact in the entire Lower Mississippi Valley, and research has shown that NAVD88 elevations as far north as Memphis, Tennessee are now in error by at least 0.20 foot since the new datum was published in 1990.