This dataset contain the 1:20,000 scale contour elevation text converted from the Provincial Digital Base Mapping Project. These contours require the use of elevation text to properly interpret the elevation value of a specific contour. There are two major types of contours, index contours and intermediate contours. Index contours are identified every 5th contour line. For Alberta, the index contour intervals occur every 50 metres in relatively flat terrain and every 100 metres in mountainous terrain. Intermediate contours are contour lines that occur between the index contours. For Alberta, the intermediate contour intervals are every 10 metres in relatively flat terrain and every 20 metres in mountainous terrain. Where elevation change is sudden, intermediate contours may be deleted and only index contours are shown. The elevation text is associated with the index contours. Currently, no contour information exists for Banff, Jasper and Wood Buffalo National Parks and also for the extreme north east portion of the province. See the Completeness Report in this metadata record for details regarding coverage.

This dataset contains all of the 1:20 000 scale contour information converted from the Provincial Digital Base Mapping Project. These contour arcs are a cartographic product and they do not have any elevation values attributed to the spatial features. These contours require the use of elevation text to properly interpret the elevation value of a specific contour. There are two major types of contours, index contours and intermediate contours. Index contours are identified every 5th contour line. For Alberta, the index contour intervals occur every 50 metres in relatively flat terrain and every 100 metres in mountainous terrain. Intermediate contours are contour lines that occur between the index contours. For Alberta, the intermediate contour intervals are every 10 metres in relatively flat terrain and every 20 metres in mountainous terrain. Where elevation change is sudden, intermediate contours may be deleted and only index contours are shown. Currently, no contour information exists for Banff, Jasper and Wood Buffalo National Parks and also for the extreme north east portion of the province. See the Completeness Report in this metadata record for details regarding coverage.

Contours dataset current as of 2006. An index contour line is thicker than other contour lines and labeled with the elevation that it represents in 10 ft intervals. Every fifth contour line in this process is an index contour..

Lines of equal elevation. Index contours are at 500-foot intervals.

Open data. An index created from clipped elevation contour tiles for Douglas County Colorado

Source:1 foot contours were generated for each production block from the final bare earth DEMs using ArcGIS software. Using ArcGIS software, the contours were validated for correct topology, including must not intersect, must not self intersect, and must not have dangles. Contours are then manually reviewed with the 3D breaklines to ensure complete coverage, correct coding, data integrity and that contours behave correctly around water bodies, water crossings, and elevated features such as overpasses. The contours are then clipped to individual tiles as creating one dataset for the entire project renders the feature class un-usable. Enclosed contours completely within building footprints were removed from the final contour dataset. Coordinate System:The data was developed based on a horizontal datum/projection of NAD83 (2011), State Plane Connecticut, U.S. Survey Feet and vertical datum of NAVD88 (GEOID18) Development:This vector tile package contains contour lines originally derived in the State Plane coordinate system. Prior to generating the tile service, individual contour blocks were merged into a single, seamless data layer to ensure consistency and completeness across the project area. This unified dataset served as the basis for creating the vector tile package. During the creation of the vector tile index, Web Mercator was used as the tiling reference to enable proper indexing and tile generation within ArcGIS Online. Please note that while the vector tile index references Web Mercator for mapping and display purposes, the contour line geometries are aligned with the original State Plane coordinate system, maintaining consistency with the source data used in production. This vector tile package contains contour lines originally derived in the State Plane coordinate system. Prior to generating the tile service, individual contour blocks were merged into a single, seamless data layer to ensure consistency and completeness across the project area. This unified dataset served as the basis for creating the vector tile package. During the creation of the vector tile index, Web Mercator was used as the tiling reference to enable proper indexing and tile generation within ArcGIS Online. Please note that while the vector tile index references Web Mercator for mapping and display purposes, but the contour lines were originally in the State Plane coordinate system Use Constraints:There are no formal use restrictions. However, users should be aware the conditions may have changed since the data was originally collected, and some areas may no longer accurately reflect current surface features. This data should not be used for critical decision-making without a full understanding of their limitations.

The Index map to identify the file name of the image for this location.

The Jones Cove 40 ft Interval Contour Lines is the primary Jones Cove 40 ft Interval Contour Line data product produced and distributed by the National Park Service, Great Smoky Mountains National Park.

This dataset contain all of the 1:20 000 scale index contour information converted from the Provincial Digital Base Mapping Project.

This Kentucky-specific quadrangle index grid was developed for the KyTopo Map Series. The 60,000' x 40,000' grid tiles are landscape oriented, fit on a standard Arch-D sized sheet, and have contours based on a LiDAR-derived DEM. This Kentucky-specific quadrangle index grid was developed for the KyTopo Map Series. The 60,000' x 40,000' grid tiles are landscape oriented, fit on a standard Arch-D sized sheet, and have newly generated contours based on a KyFromAbove LiDAR-derived DEM. The 60k x 40k grid is a superset of the Kentucky Single Zone based 5k grid that is utilized for organizing and distributing most all of the Commonwealth's raster data holdings. Quadrangle names were developed utilizing a USGS methodology that focuses on the most prominent map features. Clicking on a grid tile shows the names, contour interval, contour index interval, and provides links to download currently available versions of that map.Data Download: https://ky.box.com/v/kymartian-KyTopo-QuadTiles

The Elevation Contours tile cache service displays at large scales contour lines at 3-meter intervals created from Digital Terrain Model (DTM) data points collected during the production of the 1:5,000 Black and White Digital Orthophoto images. See https://www.mass.gov/info-details/massgis-data-elevation-contours-15000 for more details.At smaller scales the service displays contour lines at 30-foot intervals originally developed at a scale of 1:250,000 and distributed by the U.S. Geological Survey. Please see https://www.mass.gov/info-details/massgis-data-elevation-contours-1250000 for more details.For both datasets, the index contours are labeled in feet above sea level.

This data set represents smoothed, 2-foot bare earth contours (isolines) for the Lower Androscoggin (01040002) HUC 8 unit. It was derived from a data set which was compiled from LIDAR collections in NH available as of spring, 2019. The raster was filtered using the ArcGIS FOCAL STATISTICS tool with a 3x3 circular neighborhood. The contours were generated using the ArcGIS CONTOUR tool while applying a Z factor of 3.2808 to convert the elevation values from meters to feet. The filtered contours were then smoothed using the ArcGIS SMOOTH LINE tool. The data include an INDEX field with values of 10 and 100 to flag 10 and 100-foot contours. When viewed using this service, contours become visible at scales greater than 1:10,000.

This layer contains the 1 foot intermediate contours for the City of Round Rock. Contours are lines of elevation. Intermediate contour lines are shown between index contour lines and show an equal rate of change in elevation between index contour lines. Derived from the StratMap 2017 Central Texas Lidar Project.The project AOI (~1,340 DO4Q tiles) resides in the Central Texas region around the I-35 corridor from Williamson County to Hays County. The AOI includes metropolitan areas as well as various vegetation classifications spanning farmland to dense forest. The data acquired is part of an ongoing geospatial data collection program by the State of Texas to support regional and local mapping needs. The products acquired by this project are made available in the public domain through the Texas Natural Resources Information System (TNRIS) for use by government entities and the public.

These vector contour lines are derived from the 3D Elevation Program using automated and semi-automated processes. They were created to support 1:24,000-scale CONUS and Hawaii, 1:25,000-scale Alaska, and 1:20,000-scale Puerto Rico / US Virgin Island topographic map products, but are also published in this GIS vector format. Contour intervals are assigned by 7.5-minute quadrangle, so this vector dataset is not visually seamless across quadrangle boundaries. The vector lines have elevation attributes (in feet above mean sea level on NAVD88), but this dataset does not carry line symbols or annotation.Data downloaded from https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Contours/National/GDB/

This layer contains data for the 2 foot intermediate contours for the City of Round Rock, located in Williamson County, Texas. This layer is part of an original dataset provided and maintained by the City of Round Rock GIS/IT Department. The data in this layer are represented as lines. Contours are lines of elevation. Intermediate contour lines are shown between index contour lines and show an equal rate of change in elevation between index contour lines. The project AOI (~1,340 DO4Q) resides in the Central Texas region around the I-35 corridor from Williamson County to Hays County. The AOI includes metropolitan areas as well as various vegetation classification spanning farmland to dense forest. The data acquired is part of an ongoing geospatial data collection program by the State of Texas to support regional and local mapping needs. The products acquired by this project are made available in the public domain through the Texas Natural Resources Information System (TNRIS) for use by government entities and the public.

Polyline dataset that display 1 foot contour interval for the City of Winchester. Contours were generated during the 2023 aerial photography project that was contracted by Eagle View. Certified orthomosaics, LiDAR and various LiDAR derivatives (DEM, point cloud, and contours) were created as a result of the project. Eagleview included fields for index (5ft) and intermediate (1ft) contour lines for display purposes. Elevation value for each line are within a string and integer data type field. Caputure Date: March 2023

This dataset contain all of the 1:20 000 scale index contour information converted from the Provincial Digital Base Mapping Project.

This data set contains bathymetric isolines for the Salton Sea at an interval of five feet. This data was generated from the sounding points taken by Bureau of Reclamation staff as part of a reconnaissance study perfomed for the Salton Sea Science Advisory Committee. This data has been extensively computer-generalized and manually smoothed using a graphic editor. Every fifth contour has also been coded as an index contour to mimic conventional symbolization of topography and bathymetry, and all contours have been assigned both elevation and depth.

The Hartford 40 ft Interval Contour Lines is the primary Hartford 40 ft Interval Contour Line data product produced and distributed by the National Park Service, Great Smoky Mountains National Park.