Type Shapefile
To show the locations of the passes in the barrier reef and prominent reef and mangrove channels around Chuuk Lagoon.
This dataset shows the locations of the passes in the barrier reef allowing entry of large vessels from open ocean into Chuuk Lagoon, as well as the most prominent reef and mangrove channels allowing transit and shore access by small boats and canoes. This data layer was derived by Island Research & Education Initiative (iREi) (2020) from data from Geographic Names Information System (GNIS), Geoview, andStudent Atlas of Chuuk, published by Island Research & Education Initiative (iREi) (2018). We have updated many place names to reflect modern Chuukese orthography, but they are still subject to verification and correction if necessary.
Island Research & Education Initiative (iREi)
There are no expressed warranties associated with the release of these databases. Specifically, no warranty is made that the GIS data or any subsequent updates will be error free and no warranty is made regarding the positional or thematic accuracy of the GIS data. The GIS data and any features it depicts do not represent or confer any legal rights, privileges, benefits, boundaries or claims of any kind.
There is no extent for this item.
There is no scale range for this item.
The dataset is included in the Digital Atlas of Micronesia, module Chuuk, by Island Research & Education Initiative (iREi) in collaboration with Water and Environmental Research Institute of the Western Pacific (WERI) at the University of Guam and funding from United States Geological Survey (USGS) under WRRI 104-B Program and FSM Department of Environment, Climate Change & Emergency Management (DECEM).
Island Research & Education Initiative (iREi)
There are no expressed warranties associated with the release of these databases. Specifically, no warranty is made that the GIS data or any subsequent updates will be error free and no warranty is made regarding the positional or thematic accuracy of the GIS data. The GIS data and any features it depicts do not represent or confer any legal rights, privileges, benefits, boundaries or claims of any kind.
The names require thorough verification and correction of spellings to conform with Chuukese orthography.
The absolute vertical accuracy is not known by depends largely on the accuracy of the digital elevation model used to calculate the elevation. Errors might also have been introduced when the data was shifted.
1. Compare two sources (KML and GNIS); 2. Import all data derived from the KML dataset and add features from GNIS dataset not already in KML file. 3. Format attribute table.
a. KML dataset downloaded online; b. Converted KML dataset to shapefile; c. Projected shapefile to WGS84 UTM Zone 56N; d. Formatted attribute table and added field (name, source, etc).
The data was downloaded from the GNIS website and formatted for GIS and shifted about 442 meters NW to match 2016 WorldView-3 imagery.
In WGS 84
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Feature geometry.
Esri
Coordinates defining the features.
In WGS 84
From source file
Additional notes. The information imported from the KML may not be complete because of the character limitation of the text field.
KML source file
Original data