This map showcases 2005 satellite imagery of Yap taken by QuickBird satellite by DigitalGlobe. The data were purchased and processed by U.S. Department of Agriculture (USDA) – Natural Resources Conservation Service (NRCS). The image shown here is in natural color. Image portions that fall outside the barrier reef of Yap are omitted from the map.
This map showcases 2010 satellite imagery of Yap taken by Digital Globe’s WorldView-2 satellite. The data were purchased and processed by U.S. Department of Agriculture (USDA) - Natural Resources Conservation Service (NRCS). The image shown here is in natural color. Image portions that fall outside the barrier reef of Yap are omitted from the map.
This map showcases satellite imagery of Yap taken in December 2012 by WorldView-2 satellite by DigitalGlobe. The data were purchased and processed by U.S. Department of Agriculture (USDA) – Natural Resources Conservation Service (NRCS). The image shown here is in natural color. Image portions that fall outside the barrier reef of Yap are omitted from the map.
This map showcases 2016 satellite imagery of Yap taken by WorldView-3 satellite by DigitalGlobe. The data were purchased and processed by U.S. Department of Agriculture (USDA) – Natural Resources Conservation Service (NRCS). The image shown here is in natural color. Image portions that fall outside the barrier reef of Yap are omitted from the map.
This map shows the shoreline and the land area of Yap and smaller islands in Yap's lagoon and on the barrier reef. It actually contains two datasets: the shoreline itself and Yap base layer. Both were created by Island Research & Education Initiative (iREi) based on Digital Line Graphs (DLGs) from U.S. Geological Survey (USGS) 1:25,000-scale topographic maps. The shoreline and base layer were shifted and aligned with current satellite imagery. In urban areas, the shoreline was updated using WorldView-3 satellite imagery from DigitalGlobe (2016) provided by U.S. Department of Agriculture (USDA) – Natural Resources Conservation Service (NRCS).
This map represents the topography of Yap. It shows elevation contour lines at 10-meter intervals. Depicted in grayscale, the contour lines were derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969 and the shoreline dataset representing the zero contour line.
This map represents the topography of Yap. It shows elevation contour lines at 10-meter intervals. The contour lines are depicted in a range of colors corresponding to elevations from the shoreline to 180 m above sea level. They were derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969 and the shoreline dataset representing the zero contour line.
This map represents the topography of Yap. It shows elevation contour lines at 50-meter intervals. Depicted in grayscale, the contour lines were derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969 and the shoreline dataset representing the zero contour line.
This map represents the topography of Yap. It shows elevation contour lines at 50-meter intervals. The contour lines are depicted in a range of colors corresponding to elevations from the shoreline to 180 m above sea level. They were derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey based on topography compiled in 1969 and the shoreline dataset representing the zero contour line.
This map shows the elevation of terrain on Yap. The dataset was derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969. The DEM was classified into elevation intervals and colored based on elevation in meters above sea level
This map shows the elevation of terrain on Yap. The dataset was derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969. The DEM is depicted as a range of colors based on elevation in meters above sea level.
This map shows the elevation of terrain on Yap. The dataset was derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969. The DEM is depicted as shades of gray based on elevation in meters above sea level.
This map shows the relief of terrain on Yap. The dataset was derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969. The dataset was derived using the so-called hillshade function that creates an illusion of viewing terrain in 3D.
This map shows the elevation and relief of terrain on Yap. It consists of two separate datasets, both of which were derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969. The two datasets are a DEM classified into elevation intervals and colored and a hillshade layer. Combined, they produce hypsometric-tinted shaded relief seen on the map and give the illusion of viewing terrain in 3D while also providing elevation information
This map shows the slope aspect of the terrain on Yap. Slope aspect is the compass direction in which a particular slope faces. The dataset was derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969.
This map shows the steepness of slope on Yap. The steepness here is expressed in degrees and illustrated by means of a color gradient. The dataset was derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969.
This map shows the steepness of slope on Yap. The steepness here is expressed in terms of percent rise and illustrated by means of a grayscale gradient. The dataset was derived by Island Research & Education Initiative (iREi) from a 10-meter resolution Digital Elevation Model (DEM) by U.S. Geological Survey (USGS) based on topography compiled in 1969.
This is a topographic map of Yap. The 1:25,000-scale map was first published by the U.S. Geological Survey (USGS) in 1996 as a paper document. The map was later scanned and georeferenced to create what is commonly referred to as Digital Raster Graphics (DRGs). Island Research & Education Initiative (iREi) (2020) converted the original PDF file to GeoTIFF. In the map shown here, portions of the DRG that fall outside the barrier reef of Yap are omitted.
This map shows the basic soil types of Yap. The original dataset was created by the U.S. Department of Agriculture (USDA) – Natural Resources Conservation Service (NRCS) (1983) as part of the soil survey of Yap, Federated States of Micronesia at 1:10,000 scale. Soil map unit delineations were confirmed as accurate during a subsequent evaluation (1999). The data layer was created by Island Research & Education Initiative (iREi) (2019) by extracting and formatting a subset of the Gridded Soil Survey Geographic (gSSURGO) Database for Federated States of Micronesia (2019) created by USDA-NRCS.
This map shows the general geology of Yap. The data layer was created by Island Research & Education Initiative (iREi) (2019) by scanning, georeferencing, and digitizing a paper map with data by C.G. Johnson, geologist, Military Geology Branch, U.S. Geological Survey (USGS); prepared for the Intelligence Division, Office of the Engineer, Hq. U.S. Army Japan; based on field investigations by C.G. Johnson in 1947-1948; compiled in 1956 from Caroline Islands 1:25,000, Series W856, Sheets 1850 III NW, 1850 IV NE, 1850 IV SE and 1850 IV SW; original mapping by photogrammetric (multiplex) methods in 1954.
This map shows the locations of prominent hilltops on Yap. This data layer was developed by Island Research & Education Initiative (iREi) (2019) by slightly modifying data from U.S. Geological Survey (USGS) Geographic Names Information System (GNIS). The place names shown on this map are copied from the two sources above and are not authoritative. They require thorough verification and correction of spellings to conform with Yapese orthography.
