Datums

Preparing Your Esri Data for the New National Spatial Reference System

November 14, 2024

Get ready for the new NSRS in 2026 by properly transforming your Esri data.

Heard about NATRF2022 and NAPGD2022? What about IGLD (2020) and the LWD?

May 4, 2023

A possible redefinition of the Low Water Datum for the Great Lakes will have impacts that go beyond just updating maps and charts.

Professor Alan Vonderohe’s book on the new 2022 datums is now available

May 13, 2019

In 2022 the National Geodetic Survey (NGS) will replace NAD 83 and NAVD 88 with new horizontal and vertical reference systems known as the North American Terrestrial Reference Frame of 2022 (NATRF2022) and the North …

WSRS2022: The Wisconsin Spatial Reference System 2022 Task Force

December 12, 2018

The PLSS Workgroup was formed by individuals and organizations in Wisconsin to advocate and advance the purpose and importance of the Public Land Survey System. Our goal is to educate and encourage State, County and Municipal agencies in improving, advancing and maintaining the Public Land Survey System statewide.

WI-SDMS Translator

November 29, 2018

Software packages available to convert and transform coordinate reference systems.

Wisconsin Coordinate Reference Systems, Second Edition

August 1, 2017

This handbook is a technical guide and resource for those who work with geospatial information in Wisconsin. It provides a brief overview of the history, evolution, and basics of Wisconsin’s coordinate reference systems, and compiles in one place the technical specifications for systems most commonly used in the state.

Coordinate Reference Systems

July 15, 2017

Coordinate systems are used to accurately identify locations on the Earth’s surface, and are one of the fundamental building blocks that make modern Geographic Information Systems possible. This pages contains more information on coordinate reference systems commonly used in Wisconsin.