LOGIS Blog

LOGIS GIS is helping our cities standardize mapping for disaster response and damage assessment

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One of the many ways LOGIS GIS assists our public safety group and other emergency responders from our member cities is through the compilation and delivery of paper and digital “cab books”.   These map books are specific to the jurisdictions of the cities and have, in recent iterations, been designed with the U.S. National Grid system as the primary focus of the page layout.

The U.S. National Grid (USNG) is based on a common geographic projection and rectangular grid system (Universal Transverse Mercator).  A practical advantage over using geographic coordinates (latitude, longitude) is that USNG location references correlate directly to field measurements.  In other words, distances can be accurately measured between two locations easily, and the precision of locations and measurements can be maintained consistently across the state and across the nation. This is not true with geographic coordinates.

The compilation of our U.S. National Grid “cab books” has been a collaborative effort.  LOGIS GIS staff solicited assistance in sheet layout, design, and national compliance requirements from the city of Edina’s GIS staff and we acquired USNG data source information from Dakota County’s Office of GIS as well as other sources.  LOGIS GIS then compiled and delivered comb bound paper copies of the books to several of our GIS member cities and has created digital pages of the books for all of our GIS member cities.  Since many of the map layers of these books are updated regularly for a variety of other city GIS needs, the compilation procedure has been embedded in our enterprise GIS.  In this way LOGIS GIS, city, and agency staff can quickly and easily reproduce up-to-date replacement pages for their books whenever necessary.

Please contact the LOGIS GIS staff for more information about USNG “cab books” for your city.

For more information on the implementation of the U.S. National Grid in Minnesota, please see this article.  http://www.mngislis.org/displaycommon.cfm?an=1&subarticlenbr=445

Also see the following for information on the USNG as a state standard. http://www.mngeo.state.mn.us/committee/standards/usng/usng_standard.htm

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Category: Disaster Recovery,Geographic Information Systems (GIS)

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