NAVD 88 – The Map Room https://www.maproomblog.com Blogging about maps since 2003 Wed, 04 Oct 2017 14:07:48 +0000 en-US hourly 1 https://www.maproomblog.com/xq/wp-content/uploads/2017/04/cropped-logo-2017-04-32x32.jpg NAVD 88 – The Map Room https://www.maproomblog.com 32 32 116787204 NATRF2022 Datum Coming to North America in 2022 https://www.maproomblog.com/2017/10/natrf2022-datum-coming-to-north-america-in-2022/ Wed, 04 Oct 2017 17:30:09 +0000 http://www.maproomblog.com/?p=5143 More]]> Geoff Zeiss posts about the forthcoming NATRF2022 datum, which will replace NAD 83 and NAVD 88 in 2022. It will address the shortcomings of the earlier datums and for the first time provide a common datum for Canada, the U.S. and Mexico. “Practically,” Geoff writes, “this means that elevations may change by up to a meter and horizontal location by up to 1.5 meters. The actual corrections to elevations and horizontal locations will depend on where you are in North America. The greatest changes are in the Pacific Northwest and the least in the southeastern U.S.” [Dave Smith]

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