Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC), 20121024, 2006 FEMA Lidar: Hawaiian Islands: NOAA's Ocean Service, Coastal Services Center (CSC), Charleston, SC.
This is a Point data set.
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0000001. Longitudes are given to the nearest 0.0000001. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
This data set was collected to create digital elevation models of the southern shores of Hawaii.
Person who carried out this activity:
Not available beyond what is reported for positional accuracy.
68.2% of laser returns are accurate to .30 meters (1 foot). This is assessed by the laser manufacturer and is a product of flying height (1/3000th of flying height).
The islands of Oahu, Kauai, and Hawaii were tested and found to have the following accuracies. Kauai LiDAR dataset tested .98ft vertical accuracy at 95% confidence level in open terrain, based on open terrain RMSEz (.50ft) x 1.9600; tested .88ft vertical accuracy at 95% confidence level in all land cover categories combined, based on consolidated RMSEz (.45ft) x 1.9600. Oahu LiDAR dataset tested .69ft vertical accuracy at 95% confidence level in open terrain, based on open terrain RMSEz (.35ft) x 1.9600; tested .73ft vertical accuracy at 95% confidence level in all land cover categories combined, based on consolidated RMSEz (.37ft) x 1.9600. Hawaii LiDAR dataset tested .51ft vertical accuracy at 95% confidence level in open terrain, based on open terrain RMSEz (.26ft) x 1.9600; tested .69ft vertical accuracy at 95% confidence level in all land cover categories combined, based on consolidated RMSEz (.35ft) x 1.9600. Independent accuracy testing was performed by Dewberry & Davis using 80 high accuracy quality control checkpoints distributed throughout the project in four major land cover types (open terrain, weeds/crops, forest, urban). Dewberry used testing procedures consistent with those specified in the National Standard for Spatial Data Accuracy (NSSDA) as well as LiDAR accuracy testing guidelines and specifications published by the Federal Emergency Management Agency (FEMA), National Digital Elevation Program (NDEP), and American Society for Photogrammetry and Remote Sensing (ASPRS).
Accuracy was ensured with an independent quality assurance evaluation.
Are there legal restrictions on access or use of the data?
- Access_Constraints: 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. These data depict the heights at the time of the survey and are only accurate for that time.
Any conclusions drawn from the analysis of this information are not the responsibility of FEMA, NOAA, the Coastal Services Center or its partners.
This data can be obtained on-line at the following URL: <http://www.csc.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1393>