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					          Washington Statewide
         Geodetic Control Network                                                                                                    Height Modernization – State by State
                                                                                  • Washington Department of Natural Resources
                                                                                  received $440K in FY04 and $440K in FY05 in
                                                                                  Height Modernization grants.
                                                                                  • Established the Spatial Reference Center of
                                                                                                                                                                                                                                 • Between 1998 and 2005, the State of Wisconsin invested over $6.5M to
                                                                                  Washington (SRCW), a member-driven non-profit
                                                                                                                                                                                                                                 the Wisconsin Height Modernization Plan (WI-HMP), using a combination of
                                                                                  organization to improve the reliability of positioning
                                                                                                                                                                                                                                 state funds and federal planning and research funds from the Federal
                                                                                  information within Washington State.
                                                                                                                                                                                                                                 Highway Administration.
                                                                                  • Partnering with Pierce County to conduct a project
                                                                                                                                                                                                                                 • The Wisconsin Department of Transportation (WisDOT) received NOAA
                                                                                  with nearly 200 miles of leveling and related GPS
                                                                                                                                                                                                                                 grants of $400K in FY03, $2.66M in FY04, and $2.66M in FY05.
                                                                                  Height Modernization observations.
                                                                                                                                                                                                                                 • Developed WI-HMP phases (geographic regions of the state) to ensure
                                                                                  • Floodplain Mapping Partnership activity with other                                                                                           seamless and compatible data.
                                                                                                                                                               Phase 6
                                                                                  several state and local agencies.
                                                                                                                                                               marksetting                                                       • Leveling and GPS surveys conducted with WisDOT personnel and private                                Kentucky
                                                                                  • Training - SRCW and NGS held two 2-day                                                                                                       contractors                                                                                           • Morehead State University received $440K grant in FY05 to implement a Height Modernization Program, in
                                                                                  Leveling Seminars and Workshops combining                                                                                                      • Five of eight phases complete.                                                                      cooperation with the Kentucky Division of Geographic Information and the Kentucky Transportation Cabinet.
                                                         Existing CORS            theory and actual field work examples of 1st and
                                                                                                                                                               in 2004.
                                                                                                                                                                                                                                                                                                                                       • The goal of the Kentucky Height Modernization Program is to bring accurate and reliable heights to any location
                                                                                                                                                                                                                                 • No field observations were possible in 2005 due to severe reductions in
                                                         New CORS                 2nd order leveling techniques in in Renton and                                                                                                 state staffing of the WI-HMP.                                                                         in the Commonwealth at any time.
                                                                                                                                                           Phase 5 GPS
                                                                                  Spokane (June 2005).                                                                                                                           • Monumentation continued in the first half of Phase 7 during 2005 and is                             • The realization of this goal begins with the establishment of a Kentucky CORS Network.
                                                                                                                                                           submitted to NGS;
                                                                                  • SRCW sponsored a Real-Time GPS conference                                                                                                    scheduled for completion in 2006.                                                                     • The existing vertical control network will be studied in pilot project areas to determine the best method to
                                                                                                                                                           leveling to NGS by
                                                                                  (September 2005).                                                                                                                              • Field surveying in the Phase 6 area, both GPS and leveling, are now                                 transfer orthometric elevations to the HARN and CORS.
                                                                                                                                                           late 2005.
                                                                                  • Three Height Modernization User Forums were                                                                                                  scheduled beginning in the early spring of 2006.                                                      • The improved geodetic control will be used to improve the regional geoid model and provide a reference frame
                                                                                  held in September 2004 in Vancouver, Seattle, and                                                                                              • Mark recovery -Phase 8 ongoing; completion scheduled for early 2006.                                for surveying and remote sensing measurements.
                                                                                                                                                                                         Survey data submitted
                                                                                  Spokane.                                                                                                                                       • Education and outreach program.                                                                     • Height Modernization User Forum held (October 2004) in Somerset.
                                                                                                                                                                                         and loaded for Phases
                                                                                                                                                                                         1,2,3 and 4.                            • Users Forum held in Wisconsin Rapids, November 2003.
                                                         Alaska                                                                                                                                                                  • Wisconsin continues to be very active in sharing technology and
                                                                                                                                                                                                                                 experience with other interested states.


  California Spatial
                                                         Glenn County
                                                                                                                                                                                                                                                                                             North Carolina
  System Networks                                                                                                                                                                                                                                                                            • North Carolina one of the two original states to receive Height Modernization funding.
                                                                                                                                                                                                                                                                                             • The North Carolina Geodetic Survey (NCGS) received $1.0M grant in FY01, $890K in FY02, $890K in FY03, $890K in FY04 and $890K in FY05.
                                                                                                Tuolumne County                                                                                                                                                                              • North Carolina Floodplain Mapping Program uses Height Modernization to gather elevation data to evaluate and improve the accuracy of the floodplain maps.
                                            Yolo County                                                                                                                                                                                                                                      • Cooperative effort with the Department of Homeland Security to use the results of the HMP surveys and the CORS to cover the State with modernized Flood
                                    Contra Costa County                                                                                                                                                                                                                                      Insurance Maps.
                                                                                                                                                                                                                                                                                             • Approximately 40 CORS in the state, with plans to expand the network.
                                           South SF Bay                                                                                                                                                                                                                                      • North Carolina established Real-Time Kinematic CORS Networks in several urban areas, with plans to expand coverage.
                                                                                                                                                                                                                                                                                             • Several Height Modernization projects have been completed: Buncombe, Gaston, Henderson, Wake, and Watauga Counties. Height Modernization projects are
                                                                               San Joaquin Valley                                                                                                                                                                                            currently underway in Ashe and Haywood Counties.
                                                                                                                                                                                                                                                                                             • Leveling connections to CORS are ongoing.
                                                         San Simeon Resurvey                                                                                                                                                                                                                 • Outreach, education, technology transfer, and software support for Height Modernization activities conducted by NOAA and NCGS through a cooperative agreement
                                                                                                                                                                                                                                                                                             with North Carolina Agricultural and Technical State University (NCA&T).
California                                                                                                                                                                                                                                                                                   • Current NCA&T projects include the development of a Windows interface software program for ADJUST which will be made available to the public when complete.
• The California Spatial Reference Center (CSRC) provides geodetic                                              CGPS Only                                                                                                                                                                    • NCA&T hosted twp 2-day Height Modernization workshops (September 2004 and 2005) for beginners and advanced users of GPS.
services to ensure the availability of accurate, consistent, and timely
                                                                                                               CORS Leveling                                                                                                                                                                 • NCA&T developing a GeoSpatial Curriculum and anticipates a program offered in 2006.
 spatial referencing data, including coordinates and data from the                                                                                                                                                          Spatial Reference Centers
                                                                                                                                              Texas                                                                                                                                          • In FY04, User Forums were conducted in Raleigh and Charlotte.
Continuously Operating Reference Stations (CORS) stations in
                                                                                                                                              • In FY05 Texas A&M University-Corpus                                         Regional Leaders
• The CSRC also monitors temporal changes in geodetic coordinates                                                                             Christi received a grant of $665K for                                         Lead Agencies
due to tectonic motion, earthquakes, volcanic deformation and land                                                                            Height Modernization in Texas.                                                Height Modernization States
subsidence.                                                                                                                                   • Height Modernization has been
• In FY01 California was one of the first states to receive Height                                                                            underway in the Harris-Galveston Coastal
                                                                                                                                                                                                                            Interested States                    Mississippi
Modernization funding through NOAA.                                                                                                           Subsidence District since the mid-1980’s                                                                           • The University of Southern Mississippi (USM) received a
• $1.0M was appropriated for the creation of the CSRC. The CSRC has                                                                           when GPS was first used to measure and                                                                             $400K grant in FY03, $440K in FY04, and $530K in FY05 for
since received $1.0M in FY02, FY03, and FY04 and $0.5M in FY05.                                                                               monitor subsidence.                                                                                                Height Modernization efforts in Mississippi.
• Several Height Modernization projects (GPS and leveling) have been                                                                                                                                                                                             • Height modernization initiative to install a network of                   Alabama
completed in California, including the San Joaquin Valley Project, Contra                                                                                                                                                                                        reference stations throughout the state and water level                     • The Alabama Department of Revenue
Costa County, Yolo County, and Tuolumne County. Other projects                                                                                                                                                                                                   stations along the coast through USM's Gulf Coast Geospatial                received a $1.77M grant in FY04 and $1.77M
                                                                                                                                                                                                                                                                 Center at the Gulf Coast Research Laboratory (GCRL).                        in FY05 for Height Modernization efforts in
underway include:                                                           Louisiana                                                                                                                                                                            • Higher accuracy in data on land elevations and to relate                  Alabama.
  - Northern California Densification, a cooperative project with the       • Louisiana State University received $800K grant in FY02 to establish the Louisiana Spatial
California Department of Transportation (reobservation of 800 to 900                                                                                                                                                                                             those measurements to changes in sea level in the Gulf of                   • GPS observations, technology transfer, and
                                                                            Reference Center (LSRC) to address the state’s geospatial needs.
passive geodetic stations in Northern California),                                                                                                                                                                                                               Mexico.                                                                     cooperative efforts among neighboring states
                                                                            • The LSRC has since received $400K in FY03, $440K in FY04 and $440K in FY05.
  - Yolo County (new project of 65 stations), and                                                                                                                                                                                                                • In May 2005 NOAA and USM inaugurated a new tide and                       with similar issues such as Mississippi and
                                                                            • Priorities include development of a network of high precision, continuously operating GPS
  - Glenn County (subsidence monitoring project).                                                                                                                                                                                                                water level station at the GCRL in Ocean Springs -- the first               Louisiana will expedite the development of
                                                                            reference stations and development of a Vertical Time-Dependent Positioning (VTDP) model to
• The CSRC determined NAVD88 heights on 20 California CORS                                                                                                                                                                                                       on the Gulf Coast that is co-located with a GPS system based                the Height Modernization Program in the Gulf
                                                                            address the dynamic vertical control issues caused by subsidence.
through conventional leveling and GPS surveys.                                                                                                                                                                                                                   CORS.                                                                       of Mexico region.
                                                                            • In May 2005 NOAA officially released NOAA Technical Report 50: Rates of Vertical
• In Orange County, Riverside County (Metropolitan Water District), San                                                                                                                                                                                          • Applications supported by linking a CORS station with a                   • Through a voluntary effort supported by
                                                                            Displacement at Benchmarks in the Lower Mississippi Valley and the Northern Gulf Coast,                                                                                                                                                                                                                                                 South Carolina
Diego County, and Parkfield users can access a “real-time” CORS                                                                                                                                                                                                  long-term water level station include: long-term subsidence                 private and local agencies, Alabama has re-
                                                                            an analysis of historical leveling observations used to compute rates of subsidence and help                                                                                                                                                                                                                                            •The South Carolina Geodetic Survey received
network (one to two-second latency) for their dynamic positioning needs.                                                                                                                                                                                         measurement, relative sea level trends assessment, storm                    observed their basic geodetic network as a
                                                                            identify “reliable” survey marks for control purposes.                                                                                                                                                                                                                                                                                  grants of $400K in FY03 and $440K in FY04 for
• The CSRC is also developing the Pocket GPS Manager (PGM), a set                                                                                                                                                                                                surge monitoring from hurricanes and other coastal storms,                  starting point for the HMP program.
                                                                            •GPS and leveling surveys conducted along major evacuation routes in coastal Louisiana to determine up-to-date elevations of the roadways                                                                                                                                                                                               Height Modernization efforts in South Carolina.
of platform-independent software designed for handheld PDAs to              • Evacuation route profiles were measured using a new technology, the Applanix POS LV blended navigation system. NGS is conducting a proof-of-
                                                                                                                                                                                                                                                                 shoreline change and habitat restoration.                                   • This massive effort involved over 120
replace hand-written field logs used in GPS campaign surveys.                                                                                                                                                                                                    • In December 2003, a Height Modernization User Forum was                   geodetic points in Alabama and neighboring                             • Although the Geodetic Survey of South
                                                                            concept study to develop techniques and specifications for applying this technology to the problem of route surveying.
• CSRC providing assistance to the UNAVCO Plate Boundary                                                                                                                                                                                                         held in Biloxi.                                                             states.                                                                Carolina did not receive Congressional funding
                                                                            • In 2004 GPS observations performed on monumented VTDP control points throughout the southern parishes.
Observatory project.                                                                                                                                                                                                                                             • Technology transfer and cooperative efforts among                         • Plans underway to establish additional                               in FY05, South Carolina continues to use HMP
                                                                            • As the first state in the Gulf of Mexico region to implement the Height Modernization Program, Louisiana provides technical assistance and leadership
                                                                                                                                                                                                                                                                 neighboring Gulf states with similar issues will expedite the               CORS as a part of the HMP.                                             guidelines and survey procedures to improve the
                                                                            to neighboring Gulf States.
                                                                                                                                                                                                                                                                 development of the Height Modernization Program in the Gulf                 • Three Height Modernization Forums have                               National Spatial Reference System in a mapping
                                                                            • Outreach and education activities include a Louisiana Elevations Workshop held in New Orleans in January 2005, a GIS Height Modernization Forum in
                                                                                                                                                                                                                                                                 of Mexico region.                                                           been held (two in 2005 and one in 2003).                               partnership with counties throughout the State.
                                                                            Shreveport in October 2004, a Louisiana Height Modernization Summit and Regional Coordination Meeting in Baton Rouge in June 2004.
                                                                                                                                                                                                                                                                 • Plans underway for adding additional CORS.                                                                                                       • Map shows counties (in blue) with completed
                                                                            • LSRC, NGS and NOS representatives involved in hurricane response efforts.
                                                                                                                                                                                                                                                                 • Future activities include a large project in the Coastal region                                                                                  HMP surveys. Surveys are underway in other
                                                                            • LSRC and NGS personnel present seminars and overviews to the surveying community, Federal, state, and local agencies and governments.
                                                                                                                                                                                                                                                                 of Mississippi to further develop support for the HMP.                                                                                             counties (in red).

                           For more information, contact Juliana Blackwell at or visit                                                                                                                                                                              National Geodetic Survey, National Oceanic and Atmospheric Administration

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