Update on National Geodetic Survey Activities Joe Evjen, NGS 02 May 2006

We don’t build bridges … but we help you safely reach the opposite shore. We don’t make maps … but we make accurate, consistent maps possible. Source: Zurich-American Insurance Group

Major Deliverables 1.The National Spatial Reference System 2.Definition of the National Shoreline 3.Surveys and QA/QC for FAA Charts

State Advisors Research Remote Sensing Data Software CORS OPUS Height Modernization National Readjustment

NGS’ Vision: Everyone can know where he or she is and where other things are anytime, anyplace.

Geographic Information Systems

CORS Network – Current Status  176 CORS Partners –107 National CORS Partners –69 Cooperative CORS Partners  904 CORS Stations –745 National –159 Cooperative  Average of 15 sites per month added to network

CORS Network – Exciting Developments  12 Stations in Mexico officially added to CORS Network  Stations operated by Mexican Government - Instituto Nacional de Estadistica Geografia e Informatica (INEGI)

Established by U.S. Army in Consultation with NOAA’s NGS CORS Network now contains 6 Iraqi Sites CORS Network – Exciting Developments

3 stations in Surinam, South America added to Network in March CORS Network – Exciting Developments

You’ve got ! Your GPS position is...

control station photo * control station description * control station monument NGS-modeled antenna GPS data ( 4+hours ) OPUS website for registered users public datasheet QA/QC 2 reviews OPUS  Datasheet Concept observation notes * optional for “existing” stations.

 OPUS »$$$ receiver, hours of data  OPUS-DB share results »$$$ receiver, hours of data, share results  OPUS Projects »Multiple »Multiple $$$ receivers, share results  OPUS Rapid Static minutes »$$$ receiver, minutes of data  OPUS GIS »¢¢ receiver »¢¢ receiver, minutes of data Many Flavors of OPUS Planned

National Readjustment  Anticipated completion by February 10, 2007  Free adjustment, 1st iteration: 43 of 52 Helmert Blocks analyzed.  Complete Helmert blocking solution involves: –total of 68,336 unique stations –302,171 vectors. Readjustment Website is now LIVE!

Surveying for the FAA Long standing relationship with the FAA to conduct airport surveys. Cooperative program with year-to- year fluctuations in funding and scope of work.

Shoreline Mapping… Contracting Opportunities

Shoreline Mapping Mapping the Shoreline in San Francisco

Vertical Datum Transformation 3-D Datums Orthometric Datums Tidal Datums MHHW, MHW, MTL, DTL, MLW, MLLW NAVD 88, NGVD 29 WGS 84, NAD 83 (86)

Sea Level Rise Scenarios – NC Topo/Bathy/VDatum Project Areas in NC inundated with a 30 cm SLR

Height Modernization Used to determine accurate heights using GPS, along with traditional leveling, gravity, and modern remote sensing observations. Critical for: –Dam, levee safety –Evacuation planning –Hazard mitigation –Flood-plain mapping –Subsidence monitoring –Determining high-water marks  11 Planned Workshops/Forums in FY 2006

Legend Spatial Reference Centers Regional Leaders Lead Agencies Height Modernization States Interested States Height Modernization Status

Emergency Preparedness NGS assists emergency planners in various ways  Evacuation route surveys  Accurate heights for measuring sea- level rise, subsidence  Shoreline maps for safe navigation

Hurricane Response  Remote Sensing Division conducted damage assessment flights immediately following the landfall of Katrina, Rita, and other hurricanes  For Katrina, NGS collected more than 8,300 images over 1,600 miles of linear flight lines –Website received over 72 million hits, and users have downloaded over 51 million image files  Google Earth and other Web services incorporated the imagery.  Insurance adjusters used the imagery to help process claims.

Geodetic Research Efforts  Goal is to reduce the amount of time a surveyor has to ‘sit’ on a monument, while still achieving highest possible accuracy

Geoid Updates In 2005 – GEOID03 was modified to accommodate new NAVD88 elevations on benchmarks in LA In 2006 – GEOID03 was completed for Alaska, Hawaii and PR/VI, which was the first time that these three regions had a geoid model specifically built around the NAD 83 ellipsoid In 2006 – GEOID06 will be computed for Alaska, which will incorporate GPS derived ellipsoid heights on NAVD 88 benchmarks. First ever “hybrid” geoid model

Future Projects  First ever geoid models for many Pacific territories of the USA  Collaborative geoid modeling efforts with Canada covering all of North America  Continued innovations with OPUS products  Real-time positioning?

 New gravity data collection and historic gravity updated for tectonic changes  An updated vertical datum accessed via GPS and accurate geoid models, monumented benchmarks not required Future Projects

State Advisor Program

Chan Lowe Florida Sun-Sentinel, Tribune Media Services

Vision: Everyone is able to know where they are and where other things are anytime, anyplace! The mission of the National Geodetic Survey is to deliver and evolve the nation’s foundation of reference for latitude, longitude, height, velocity, shoreline, and gravity throughout the United States with consistency, accuracy, timeliness, currency, and easy access to support public safety, economic prosperity, and environmental well being. Check out our Website