Boston, Massachusetts Region, Digital Elevation Model with Bathymetry

This raster layer represents surface elevation and bathymetry data for the Boston Region, Massachusetts. It was created by merging portions of MassGIS Digital Elevation Model 1:5,000 (2005) data with NOAA Estuarine Bathymetric Digital Elevation Models (30 m.) (1998). DEM data was derived from the digital terrain models that were produced as part of the MassGIS 1:5,000 Black and White Digital Orthophoto imagery project. Cellsize is 5 meters by 5 meters. Each cell has a floating point value, in meters, which represents its elevation above or below sea level.

China 1:200,000 : Sheet H-50-XXIV : Zhejiang Sheng Region (Raster Image)

This layer is a georeferenced raster image of the Soviet Army topographic sheet map covering a portion of the Zhejiang Sheng region, China (map quadrangle number: H-50-XXIV). It is from a series of Soviet Army topographic maps of China 1:200,000. The source map was published in 1979. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Pulkovo 1942 GK Zone 20N projection. Map collar information from the source map have been cropped and are not available as part of the raster image. China 1:200,000 topographic maps were prepared and printed by the Soviet Army General Headquarters, 1976-1991. China 1:200,000 maps are in Russian. Each source map in the series is printed in color. China 1:200,000 maps are typical topographic maps portraying both natural and manmade features. They show and name works of nature, such as mountains, valleys, lakes, rivers, vegetation, etc. They also identify the principal works and structures of humans, such as roads, railroads, paths, walls, boundaries, transmission lines, major buildings, etc. Relief is shown with standard contour intervals of 40 meters and/or spot heights.

China 1:200,000 : Sheet H-50-XXX : Zhejiang Sheng Region (Raster Image)

This layer is a georeferenced raster image of the Soviet Army topographic sheet map covering a portion of the Zhejiang Sheng region, China (map quadrangle number: H-50-XXX). It is from a series of Soviet Army topographic maps of China 1:200,000. Published in 1979, the source map was compiled from maps 1:100,000 published in 1977; corrected according to source material, 1970-1975. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Pulkovo 1942 GK Zone 20N projection. Map collar information from the source map have been cropped and are not available as part of the raster image. China 1:200,000 topographic maps were prepared and printed by the Soviet Army General Headquarters, 1976-1991. China 1:200,000 maps are in Russian. Each source map in the series is printed in color. China 1:200,000 maps are typical topographic maps portraying both natural and manmade features. They show and name works of nature, such as mountains, valleys, lakes, rivers, vegetation, etc. They also identify the principal works and structures of humans, such as roads, railroads, paths, walls, boundaries, transmission lines, major buildings, etc. Relief is shown with standard contour intervals of 40 meters and/or spot heights.

China 1:200,000 : Shaoxing Region, Zhejiang Sheng (Raster Image)

This layer is a georeferenced raster image of the Soviet Army topographic sheet map of the Shaoxing region, Zhejiang Sheng, China (map quadrangle number: H-51-XIX). It is from a series of Soviet Army topographic maps of China 1:200,000. Published in 1979, the source map was compiled from maps 1:100,000 published in 1977; corrected according to source material, 1973, 1974. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Pulkovo 1942 GK Zone 20N projection. Map collar information from the source map have been cropped and are not available as part of the raster image. China 1:200,000 topographic maps were prepared and printed by the Soviet Army General Headquarters, 1976-1991. China 1:200,000 maps are in Russian. Each source map in the series is printed in color. China 1:200,000 maps are typical topographic maps portraying both natural and manmade features. They show and name works of nature, such as mountains, valleys, lakes, rivers, vegetation, etc. They also identify the principal works and structures of humans, such as roads, railroads, paths, walls, boundaries, transmission lines, major buildings, etc. Relief is shown with standard contour intervals of 40 meters and/or spot heights.

China 1:200,000 : Xianju Region, Zhejiang Sheng (Raster Image)

This layer is a georeferenced raster image of the Soviet Army topographic sheet map of the Xianju region, Zhejiang Sheng, China (map quadrangle number: H-51-XXV). It is from a series of Soviet Army topographic maps of China 1:200,000. Published in 1986, this map reflects 1979 ground conditions. The source map was compiled from maps 1:100,000 published in 1979. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Pulkovo 1942 GK Zone 20N projection. Map collar information from the source map have been cropped and are not available as part of the raster image. China 1:200,000 topographic maps were prepared and printed by the Soviet Army General Headquarters, 1976-1991. China 1:200,000 maps are in Russian. Each source map in the series is printed in color. China 1:200,000 maps are typical topographic maps portraying both natural and manmade features. They show and name works of nature, such as mountains, valleys, lakes, rivers, vegetation, etc. They also identify the principal works and structures of humans, such as roads, railroads, paths, walls, boundaries, transmission lines, major buildings, etc. Relief is shown with standard contour intervals of 40 meters and/or spot heights.

China 1:200,000 : Wezhou Region, Zhejiang Sheng (Raster Image)

This layer is a georeferenced raster image of the Soviet Army topographic sheet map of the Wenzhou region, Zhejiang Sheng, China (map quadrangle number: H-51-XXXI). It is from a series of Soviet Army topographic maps of China 1:200,000. Published in 1986, this map reflects 1979 ground conditions. The source map was compiled from maps 1:100,000 published in 1979. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Pulkovo 1942 GK Zone 20N projection. Map collar information from the source map have been cropped and are not available as part of the raster image. China 1:200,000 topographic maps were prepared and printed by the Soviet Army General Headquarters, 1976-1991. China 1:200,000 maps are in Russian. Each source map in the series is printed in color. China 1:200,000 maps are typical topographic maps portraying both natural and manmade features. They show and name works of nature, such as mountains, valleys, lakes, rivers, vegetation, etc. They also identify the principal works and structures of humans, such as roads, railroads, paths, walls, boundaries, transmission lines, major buildings, etc. Relief is shown with standard contour intervals of 40 meters and/or spot heights.

China 1:200,000 : Lishui Region, Zhejiang Sheng (Raster Image)

This layer is a georeferenced raster image of the Soviet Army topographic sheet map of the Lishui region, Zhejiang Sheng, China (map quadrangle number: H-50-XXXVI). It is from a series of Soviet Army topographic maps of China 1:200,000. Published in 1979, the source map was compiled from maps 1:100,000 published in 1977; corrected according to source material, 1973-1975. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Pulkovo 1942 GK Zone 20N projection. Map collar information from the source map have been cropped and are not available as part of the raster image. China 1:200,000 topographic maps were prepared and printed by the Soviet Army General Headquarters, 1976-1991. China 1:200,000 maps are in Russian. Each source map in the series is printed in color. China 1:200,000 maps are typical topographic maps portraying both natural and manmade features. They show and name works of nature, such as mountains, valleys, lakes, rivers, vegetation, etc. They also identify the principal works and structures of humans, such as roads, railroads, paths, walls, boundaries, transmission lines, major buildings, etc. Relief is shown with standard contour intervals of 40 meters and/or spot heights.

Boston, Massachusetts Region LIDAR First Return Elevation Data, 2002

LIDAR (LIght Detection And Ranging) first return elevation data of the Boston, Massachusetts region from MassGIS at 1-meter resolution. This LIDAR data was captured in Spring 2002. LIDAR first return data (which shows the highest ground features, e.g. tree canopy, buildings etc.) can be used to produce a digital terrain model of the Earth's surface. This dataset consists of 74 First Return DEM tiles. The tiles are 4km by 4km areas corresponding with the MassGIS orthoimage index. This data set was collected using 3Di's Digital Airborne Topographic Imaging System II (DATIS II). The area of coverage corresponds to the following MassGIS orthophoto quads covering the Boston region (MassGIS orthophoto quad ID: 229890, 229894, 229898, 229902, 233886, 233890, 233894, 233898, 233902, 233906, 233910, 237890, 237894, 237898, 237902, 237906, 237910, 241890, 241894, 241898, 241902, 245898, 245902). The geographic extent of this dataset is the same as that of the MassGIS dataset: Boston, Massachusetts Region 1:5,000 Color Ortho Imagery (1/2-meter Resolution), 2001 and was used to produce the MassGIS dataset: Boston, Massachusetts, 2-Dimensional Building Footprints with Roof Height Data (from LIDAR data), 2002 [see cross references].

Boston, Massachusetts Region, Digital Elevation Model (1:5,000), 2005 - Integer version

This raster layer represents surface elevation for the Boston Region, Massachusetts. This datalayer is a subset (covering only the Boston region) of the Massachusetts statewide digital elevation model. It was created from the digital terrain models that were produced as part of the 1:5,000 Black and White Digital Orthophoto imagery project. Cellsize is 5 meters by 5 meters. Each cell has an integer value, in meters, which represents its elevation above or below sea level.