USNG US NATIONAL GRID
USNG United States National Grid Lessons learned have taught us that standardized grids are needed for positional reporting. As far back as Hurricane Andrew, problems were recognized for emergency managers...
USNG What’s wrong with current systems? We already have… – Latitude/Longitude – Township/Range/Section – Street Address and Zip – UTM
USNG Latitude/Longitude Multiple formats are confusing DD , DM , DMS 85 59’24.545”W, ”N All the same location!!!
USNG How far is a second anyway? What is the distance from… ’24.545”W, 30 16’20.063”N To here… ’26.292”W, 30 16’14.546”N
USNG Worse yet… What is the distance from , To here… ,
USNG Township/Range/Section Township/Range/Section grid from the Public Lands Survey System is an important and good system… – basis of land ownership records – been in use for over 180 years
USNG Township/Range/Section But a perfect section really doesn’t exist –irregular in coastal areas – too large to meet needs of ground crews
USNG Street Address and Zip Problematic due to… – rural routes – post office boxes
USNG What do you do when the SIGNS are gone?
USNG What do you do when the ROADS are gone?
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RIGHT UP
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0 RIGHT UP
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USNG Review Grid Zone 17R 100,000m 17R NJ 4 digit = 1,000m 17R NJ digit = 100m 17R NJ digit = 10m 17R NJ RIGHT (Easting) - UP (Northing)
USNG Practical Exercise
USNG ppt Building at grid: Ex 1 Read right, and up.
USNG ppt Building at grid: Ex 1
USNG ppt Building at grid: Ex 2 Read right, and up.
USNG ppt Road Intersection at grid: Ex 3 Read right, and up.
USNG ppt Building at grid: Ex 4 Read right, and up.
USNG ppt Building at grid: Ex 5
Practical Exercise (Camp Blanding Map) 30 Locate the 8 digit coordinate for the 7 points on your map
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