2016 3DEP Lidar: Douglas County, WI

EagleView acquired highly accurate Light Detection and Ranging (LiDAR) elevation data at the USGS QL2 guidelines for the County of Douglas, Wisconsin in November 2016. This data set represents County of Douglas, comprised of approximately 1,333 square miles. LiDAR for this data set was classified and quality controlled by EagleView. Products were generated by Ground Point and subsequently quality controlled by EagleView.

The NOAA Office for Coastal Management (OCM) downloaded the lidar and breakline data from the City of Superior, WI site, processed it, and made it available on the the NOAA Digital Coast. The breakline data has not been reviewed and is made available at the user's discretion.

The purpose of this data set is to provide a high accuracy land surface model of the County of Douglas, WI and provide geographic products to the client. These products include a LiDAR point cloud and hydrologic breaklines.

CONTRACTOR: EagleView

The following are the USGS lidar fields in JSON:

{

"lidar" : {

"ldrinfo" : {

"ldrspec" : "USGS-NGP Base Specification v1.2",

"ldrsens" : "Optech Galaxy Airborne Laser Terrain Mappers (ALTM)",

"ldrmaxnr" : "4",

"ldrnps" : "0.53",

"ldrdens" : "3.35",

"ldranps" : "0.53",

"ldradens" : "3.35",

"ldrfltht" : "5249",

"ldrfltsp" : "122.5",

"ldrscana" : "40",

"ldrscanr" : "48",

"ldrpulsr" : "300",

"ldrpulsd" : "10",

"ldrpulsw" : "3",

"ldrwavel" : "1064",

"ldrmpia" : "4",

"ldrbmdiv" : "HIGH",

"ldrswatw" : "887.36",

"ldrswato" : "30",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12B"

},

"ldraccur" : {

"ldrchacc" : "0.5",

"rawnva" : "0.9884",

"rawnvan" : "35",

"clsnva" : "0.243",

"clsnvan" : "35"

},

"lasinfo" : {

"lasver" : "1.2",

"lasprf" : "1",

"laswheld" : "Withheld (ignore) points were not identified in these files using the standard LAS Withheld bit.",

"lasolap" : "Swath "overage" points were identified in these files using the standard LAS overlap class, but were not identified using the standard LAS Overlap bit.",

"lasintr" : "8-bit",

"lasclass" : {

"clascode" : "1",

"clasitem" : "Default/Unclassified"

},

"lasclass" : {

"clascode" : "2",

"clasitem" : "Bare earth"

},

"lasclass" : {

"clascode" : "7",

"clasitem" : "Low Noise (manually identified; if needed)"

},

"lasclass" : {

"clascode" : "9",

"clasitem" : "Water"

},

"lasclass" : {

"clascode" : "10",

"clasitem" : "Ignored Ground (Breakline proximity)"

},

"lasclass" : {

"clascode" : "12",

"clasitem" : "Overlap"

},

"lasclass" : {

"clascode" : "17",

"clasitem" : "Bridge Decks"

},

"lasclass" : {

"clascode" : "18",

"clasitem" : "High Noise (manually identified; if needed)"

}

}

}}

Any conclusions drawn from the analysis of this information are not the responsibility of EagleView, Ground Point, the City of Superior, WI, NOAA, the Office for Coastal Management, or its partners.

Data is available online for bulk and custom downloads

None

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

Not Provided

The RMSEz was computed to be 7.2 cm RMSE. AccuracyZ has been tested to meet 19.0 cm Fundamental Vertical Accuracy at 95 percent confidence level using (RMSEz * 1.9600) as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (3DEP)/ASPRS Guidelines. The QC report is available via a link in the URL section of this metadata record.