AEC SummitNOAA’sNational Geodetic Survey Update

Brian ShawGeodesist

NGS MissionTo define, maintain and provide access to the National Spatial

Reference System (NSRS) to meet our nation’s economic, social, and environmental needs.

The NSRS is a consistent coordinate system that defines latitude, longitude, height, scale, gravity, and orientation throughout the United States.

The NSRS SupportsNational Oceanic and Atmospheric AdministrationNSRS positioning data provides the reference for NOAA’s nautical charts, among many other geospatial applications.

Federal Emergency Management AgencyFEMA uses NSRS elevations to determine flood zones for the National Flood Insurance Program.

United States Army Corps of EngineersUSACE uses NSRS elevations to determine levee heights and positions in their Levee Safety Program.

United States Geological SurveyUSGS uses the NSRS to geospatially reference their Topographic maps and interior water data for the nation.

National Geospatial-Intelligence AgencyNSRS gravity data contributes to NGA’s geospatial mission.

2015 Geospatial SummitNow online - videos and presentations

http://www.geodesy.noaa.gov/2015GeospatialSummit/

NGS Webinar Series:http://www.ngs.noaa.gov/web/science_edu/webinar_series/

August 2015 - Summary report will be published online

September 10, 2015 - NGS Webinar topic will be

“De-briefing the Geospatial Summit”

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NGS Regional Advisor Program

OPUS Projects

State DOT’s with trained OP Manager(s)OR, NY, IA, MN, MT, VT, NC, SC, FL, WI, NH, WA, AK, CA, AR, NM, AL, LA, MI, VA, MS, UT, & moreGPS static survey control for transportation projects…Bridges, highway construction, rights of way, paving, lidar, mobile scanning, terrestrial scanning, photogrammetry, roadside inventory, signing, machine control, GIS … all aligned with the

National Spatial Reference System.

NSRS

OPUS Project for Managers classes ~112Total OP Managers trained ~2,850OP Trainers ~15 (includes ~10 NGS Advisors)

GPS on Bench Marks

http://www.ngs.noaa.gov/GPSonBM/

The new vertical

(geopotential) datum will

change heights on average

50 cm with a 1 m tilt towards

the Pacific Northwest.

How will the new datums affect you?

Gravity for the Redefinition of the American Vertical Datum (GRAV-D)

Geoid Slope Validation SurveysGSVS16 or 17 PlanningGSVS14 - Completed

Surveying Techniques:

Differential levelingGPSTerrestrial gravityAerial gravityDeflection of vertical

ColoradoIowa

• x

xGEOID14B

The NGS mission remains the same

National Spatial Reference System

Define, Maintain and Provide Access to the

More information at www.geodesy.noaa.gov