Geocoding services allow users to find discrete point locations from address data. The FirstMap geocoder searches multiple sources of data, including e911 and road centerline data that are provided by each county, to find the closest match.

This policy outlines the process the FirstMap team will follow when a change to an existing service is required and would result in users experiencing problems if they are not notified

This dataset contains a list of API endpoints available for FirstMap.

The State of Delaware Enterprise GIS (FirstMap) system serves as a centralized repository for commonly used GIS data layers including, but not limited to, the framework layers used in base maps and aerial imagery. The repository supports inter-agency data sharing, facilitates data collection and updates, and through automated replication simplifies the process to find the most recent authoritative geospatial data for the state.

Locations permitted or monitored by the Department of Natural Resources and Environmental Control.

The 2020 Census State Redistrict Data Summary File pages 99 - 113 include the data dictionary reference name and table number and contents that identifies the data dictionary reference name.

This service contains multiple years of Land Use Land Cover for the State of Delaware.This digital geospatial dataset represents land use land cover polygons as defined by the Delaware Modified Anderson System derived from: A Land Use and Land Cover Classification System for Use with Remote Sensor Data, U. S. Geological Survey Professional Paper 964, 1976; edited by Delaware in 2007, and 2012. The LULC update was performed using ArcGIS software tools, coding menus, and interactive photo-interpretative mapping techniques.

This Map Service provides both the Downtown Development District boundaries along with point information for the Grants awarded for Projects through the Downtown Development program. It also provides point locations for Building Permits and Development Applications gathered from each county and municipality by the Office of State Planning Coordination.

The Lidar DEM service has been published with several Raster Function Templates to allow users to view Hillshade, Slope, Aspect, Shaded Relief, and Spectrum rendering. The Lidar data are available in Web Mercator and State Plane projections. Refer to the appropriate section below for instructions to access and apply the templates in your maps.

DelDOT Maintenance Areas

These contours are derived from the bare-earth 2014 LIDAR Digital Elevation Model (DEM) surface but are adjusted to conform to features in the National Hydrologic Dataset (NHD) for the purpose of generating aesthetically pleasing maps and figures from the GIS-derived contours.

Enacted House and Senate Districts based on the 2020 Census. After the 2020 General Election, these enacted data will become the new Senate and Representative districts.

Artificial reef programs site, manage and develop reefs, but also have the responsibility to communicate the locations of reef material placements to anglers in order to facilitate enhanced fishing opportunities, one of the major goals of the effort. Because angler and boater funds (excise taxes) are primarily used for reef development, it is important to communicate this information to anglers and it is part of the federal aid project.

This information sheet is to help non-GIS professionals use ArcGIS Online to access the State of Delaware GIS data that is available to the public.

Feeder patterns are used bylocal school districts to distinguish the areas of the local community that feed into the school.This data is helpful when choosing before/after school care and other decision making purposes.

Graphic representation of sidewalks in Delaware with a number of attributes including type of material and year inventoried. Data is not updated on a regular basis. Updates are done when received from DelDOT

This data is to illustrate the theory, data analysis, and exemplary results of the array processing described in the corresponding publication entitled 'First map of coherent low frequency continuum radiation in the sky'.

Park Facilities - outdoor recreational facilities throughout DelawareNatural Areas - boundaries for the Natural Areas Inventory statewide for the purpose of achieving voluntary land protection of the most important natural areas in Delaware.Outdoor Recreation, Parks and Trails Program Lands – Lands where Delaware Land & Water Conservation Trust Fund (now the Outdoor Recreation, Parks and Trails Program) monies have been invested.Outdoor Recreation, Parks and Trails Program Open Space - land protected in perpetuity under the Outdoor Recreation, Parks and Trails ProgramLand and Water Conservation Fund – Lands protected under the Land and Water Conservation Fund.Nature Preserves - lands preserved under the Delaware Nature Preserves ProgramOutdoor Recreation Areas - The Outdoor Recreation Inventory (ORI) was originally created to track publicly owned lands within Delaware that are open for public recreation. The database has since been expanded to include all publicly and privately owned protected lands (Federal, State, County, Municipal and private conservation) regardless of whether they are open to the public or not.Public Protected Lands – Outdoor Recreation Areas open to the public.No Build Lines and Points - To ensure that beaches and dunes are able to perform their protective and recreational functions, construction must be kept off them. A Building Line has been established along the coast as part of the Regulations Governing Beach Protection and the Use of Beaches. The Building Line, which parallels the coastline, is designated on DNREC maps. No construction may take place seaward of the Line without a Coastal Construction Permit or Coastal Construction Letter of Approval from the Department of Natural Resources and Environmental Control(DNREC)

Service includes the following data: Forest Cover 2007, Pine Plantations, State Forest locations, and Urban Tree Canopy.

This study is an investigation of the agrarian landscape in the western part of Ostergotland County (in Sweden). The study was published in the form of a dissertation in Human Geography written (in German) by Steffan Helmfrid, and defended in 1962. Two maps were produced as a part of the dissertation, based on historical material. These maps show the agrarian landscape as it was around 1640. Helmfrid's analogue process for producing these maps was unique for the 1960s. These two maps are made available here.

Two maps are made available here:

1) Name: No Title (Working version) scale: 1:50,000 coordinate system: no coordinates file format: tiff (.tif) file size: 198 MB file name: helmfrid_orginal_photoshop.tif

2) Name: "The Agrarian Landscape on the Vadstena plains around the year 1640" scale: 1:100,000 coordinate system: RT 90 2.5 gon V (EPSG 3021) file format: geotiff (.tif) file size: 40 MB file name: helmfrid_rectify.tif

The first map is an unpublished working version that was used as the basis for the second map which is the published version contained in Helmfrid's dissertation. The working version has a larger-scale, which means it is more detailed than the second map.

The second map was digitized and rectified in 2009 by Johan Berg, also from Stockholm University. This was done as part of a project on land relations during the Younger Iron Age in western Ostergotland. (See link to separate data , 2019-102, in SND's catalog). The working version (the first map) was digitized in 2019 when it was decided to publish Helmfrid's maps via the Swedish National Data Service.

The working version was based on a compilation of 400 smaller village and farm maps, all from the 1640s. These sources can be found in the following historical property maps (in Swedish: geometriska jordeböcker): D5, D6, D7, D8 and D10 (See https://riksarkivet.se/visa-kartsamlingar -- "D" refers to maps from Ostergotland county). All the original historical maps were signed by one surveyor -- Larson Groth.

The rectified map can be opened in most Geographic Information System (GIS) programs. The map can also be opened in image editing software, but without coordinates. The working version (the first map) is also a raster file, but because the working version was never rectified, it has been saved as a normal tiff file (.tif), not a geotiff. It can be opened in image editing programs like Photoshop or opensource Gimp.

More information on how Helmfrid produced these maps and a link and reference to his dissertation can be found (in Swedish) in the attached documentation file.