NOAAs National Geodetic Survey

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NOAAs National Geodetic Survey

• Height Modernization and
• Shoreline Mapping

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Height Modernization the establishment of
accurate, reliable heights using GPS technology
in conjunction with traditional leveling,
gravity, and modern remote sensing information.
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Why Height Modernization?
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Why Height Modernization?
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Height Modernization Partnerships
Spatial Reference Centers
California, Louisiana, Washington Harris-Galveston
Subsidence District State Agencies
SCGS, NCGS, WaDNR,
WiDOT, ALDOR Universities
University of Southern
Mississippi North
Carolina AT University
Louisiana State University
University of California/Scripps
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Height Modernization Appropriations
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Louisiana Spatial Reference Center
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Heights (Elevations) are used by FEMA in

• Flood Insurance Risk Maps
• Determining High Water Marks
• Elevation Certificates
• Dam Safety
• Mitigation

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Potential Products and Tools for Map Modernization

• Height Modernization control for floodplain
  mapping
• OPUS for floodplain certificates and LIDAR
  surveys
• Subsidence rates, maps, and tools for floodplain
  managers
• Guidelines for using GPS and LIDAR for floodplain
  mapping

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Remote Sensing in Height Modernization

• Accurate, high-resolution DEMs provide a means to
  improve geoid models

Reflective Surface
Bare earth
Bare earth Buildings
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Shoreline Mapping
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San Francisco
Photo
Chart
LIDAR DEM
Laser Intensity
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Coast and Shoreline Change Analysis Program
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Sensor Fusion
Emerge DSS Imagery
LIDAR
Hyperspectral
3 bands (Visible) Spatial Resolution 30cm
Elevation Data Spatial Resolution 1m
72 bands (visible/infrared) Spatial Resolution 2
x 2.4m
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Fort Desoto Hyperspectral Imagery draped over a
LIDAR DEM with a LIDAR-derived shoreline
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NOAA Shoreline Data Explorer
delivers shoreline products via the web. brings
various vector shoreline products into one
consistent scheme.
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End of Height Modernization/Shoreline Mapping
Presentation