100+ datasets found
  1. United States Stateplane Zones - NAD83

    • catalog.data.gov
    • datadiscoverystudio.org
    • +3more
    Updated Dec 2, 2020
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    Environmental Systems Research Institute, Inc. (ESRI) (Point of Contact) (2020). United States Stateplane Zones - NAD83 [Dataset]. https://catalog.data.gov/dataset/united-states-stateplane-zones-nad83
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    Dataset updated
    Dec 2, 2020
    Dataset provided by
    Esrihttp://esri.com/
    Area covered
    United States
    Description

    U.S. State Plane Zones (NAD 1983) represents the State Plane Coordinate System (SPCS) Zones for the 1983 North American Datum within United States.

  2. USA State Plane Zones NAD27

    • hub.arcgis.com
    • mapdirect-fdep.opendata.arcgis.com
    • +1more
    Updated Apr 21, 2014
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    Esri (2014). USA State Plane Zones NAD27 [Dataset]. https://hub.arcgis.com/maps/esri::usa-state-plane-zones-nad27
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    Dataset updated
    Apr 21, 2014
    Dataset authored and provided by
    Esrihttp://esri.com/
    Area covered
    Description

    U.S. State Plane Zones (NAD 1927) represents the State Plane Coordinate System (SPCS) zones for the 1927 North American Datum in the United States. Several State Plane Coordinate System zones are not shown in this dataset, including Puerto Rico, the U.S. Virgin Islands, American Samoa, Guam, and Louisiana's offshore zone. Esri created this dataset from several sources in 1997: Extracted state boundaries from ArcUSA™ 1:25M. Created state plane boundaries based on a graphic in the article, "A National Reference System and its Relationship to Mapping" by Alden P. Colvocoresses at the U.S. Geological Survey (USGS), and John P. Snyder's "An Album of Map Projections: A Working Manual" (1987: USGS Professional Paper 1395. U.S. Government Printing Office: Washington, D.C.).To download the data for this layer as a layer package for use in ArcGIS desktop applications, refer to USA State Plane Zones.

  3. State Plane Zone IA

    • public-iowadot.opendata.arcgis.com
    • data.iowadot.gov
    Updated Jul 28, 2020
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    Iowa Department of Transportation (2020). State Plane Zone IA [Dataset]. https://public-iowadot.opendata.arcgis.com/datasets/7827348ecdba4929a01a5ea683d65cee
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    Dataset updated
    Jul 28, 2020
    Dataset authored and provided by
    Iowa Department of Transportationhttps://iowadot.gov/
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Description

    Iowa State Plane Boundaries used by Iowa DOT. These boundaries were modified for Iowa DOT use only. They may not reflect exact location.

  4. m

    Stateplane Zones

    • opendata.gis.ms.gov
    • gis.ms.gov
    • +1more
    Updated Sep 2, 2014
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    itsgisadmin (2014). Stateplane Zones [Dataset]. https://opendata.gis.ms.gov/datasets/5a5e9fe414b644599e6342bfd7ad6d5a
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    Dataset updated
    Sep 2, 2014
    Dataset authored and provided by
    itsgisadmin
    Area covered
    Description

    U.S. State Plane Zones (NAD 1983) represents the State Plane Coordinate System (SPCS) Zones for the 1983 North American Datum within United States.

    Several State Plane Coordinate System zones are not shown in this dataset, including Puerto Rico, the U.S. Virgin Islands, American Samoa, Guam, and Louisiana's offshore zone.

  5. Alpha SPCS2022 Statewide Zones Feature Layer View

    • noaa.hub.arcgis.com
    Updated May 20, 2024
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    NOAA GeoPlatform (2024). Alpha SPCS2022 Statewide Zones Feature Layer View [Dataset]. https://noaa.hub.arcgis.com/maps/noaa::alpha-spcs2022-statewide-zones-feature-layer-view
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    Dataset updated
    May 20, 2024
    Dataset provided by
    National Oceanic and Atmospheric Administrationhttp://www.noaa.gov/
    Authors
    NOAA GeoPlatform
    Area covered
    North Pacific Ocean, Pacific Ocean
    Description

    NOAA’s National Geodetic Survey (NGS) is in the process of modernizing the National Spatial Reference System (NSRS). As part of NSRS Modernization, the State Plane Coordinate System (SPCS) will be updated to SPCS2022. This Feature Layer View displays the Statewide Zones from the preliminary SPCS2022 zone layers. This layer is intended for NGS customers, stakeholders, partners, and other constituents to view and provide feedback on the SPCS2022 zones that are being planned for release. NGS is performing internal reviews and working with constituents to finalize the zone designs. These zones are preliminary and should not be considered the final definitions. Alpha SPCS2022 ExperienceAlpha SPCS2022 All Zones Web MapAlpha SPCS2022 Statewide Zones Web MapData SourcesInformation about SPCS2022 can be found on the SPCS2022 Alpha web pages.https://alpha.ngs.noaa.gov/SPCS/Exact preliminary zone definitions can be viewed at the SPCS2022 Alpha zone definition web page.https://alpha.ngs.noaa.gov/SPCS/zone-definitions.shtmlExact preliminary zone definitions can be downloaded from the SPCS2022 Alpha download page.https://alpha.ngs.noaa.gov/SPCS/download.shtmlPoint of ContactPlease email the NGS Information Center for any questions at ngs.infocenter@noaa.gov

  6. d

    CT 2012 Impervious, State Plane (Simplified Vector)

    • catalog.data.gov
    Updated Feb 7, 2025
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    data.ct.gov (2025). CT 2012 Impervious, State Plane (Simplified Vector) [Dataset]. https://catalog.data.gov/dataset/ct-2012-impervious-state-plane-simplified-vector
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    Dataset updated
    Feb 7, 2025
    Dataset provided by
    data.ct.gov
    Description

    This map service is available through CT ECO, a partnership between UConn CLEAR and CT DEEP. This dataset is a statewide vector dataset, derived from the1 foot pixel impervious cover. It was created to inform stormwater mapping requirements, called MS4 (learn more at the CT NEMO website), and has many uses beyond stormwater. Dataset InformationExtent: ConnecticutClasses: buildings, roads, other imperviousDate: Impervious created from 2012 aerial imageryProjection: CT State Plane NAD 83 feet (EPSG 2234) More Information <div style='font-family:"Avenir Next W01", &qu

  7. a

    2022 Lake County Aerial - SW Corner

    • data-lakecountyil.opendata.arcgis.com
    • hub.arcgis.com
    Updated Mar 8, 2023
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    Lake County Illinois GIS (2023). 2022 Lake County Aerial - SW Corner [Dataset]. https://data-lakecountyil.opendata.arcgis.com/documents/lakecountyil::2022-lake-county-aerial-sw-corner
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    Dataset updated
    Mar 8, 2023
    Dataset authored and provided by
    Lake County Illinois GIS
    Description

    This three inch pixel resolution color aerial photography was flown between March 19 and March 26, 2022. The files are provided in TIF format which is supported by most GIS and CAD software packages. Its intended usage for viewing is 1" = 100'. The photography has been orthorectified to meet National Map Accuracy Standards for its capture scale. The images are georeferenced to the Illinois State Plane, Eastern Zone. The data set is tiled for dissemination into separate tiles, each of which is 5280 feet (1 mile) on a side.This imagery is provided on an as-is basis, with no guarantees of accuracy or suitability for any particular purpose. Lake County, Illinois, assumes no responsibility for conclusions or decisions reached on the basis of this data.This dataset is projected using the Transverse Mercator map projection. The grid coordinate system used is the Illinois State Plane Coordinate System, East Zone (Zone Number Zone 3776, FIPS 1201), with ground coordinates expressed in U.S. Survey Feet.

  8. A

    VT USGS Topo Maps, Cached, VT State Plane Meters

    • data.amerigeoss.org
    • data.wu.ac.at
    html
    Updated Apr 26, 2018
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    United States (2018). VT USGS Topo Maps, Cached, VT State Plane Meters [Dataset]. https://data.amerigeoss.org/nl/dataset/vt-usgs-topo-maps-cached-vt-state-plane-meters
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    htmlAvailable download formats
    Dataset updated
    Apr 26, 2018
    Dataset provided by
    United States
    License

    https://hub.arcgis.com/api/v2/datasets/9e44ff68c96b44d0a5ef81d075e03986/licensehttps://hub.arcgis.com/api/v2/datasets/9e44ff68c96b44d0a5ef81d075e03986/license

    Description

    VT USGS Topo Maps, Cached, VT State Plane Meters

  9. v

    VBMP Tile Grid - North 12-inch (200 Scale)

    • vgin.vdem.virginia.gov
    Updated Jun 25, 2014
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    Virginia Geographic Information Network (2014). VBMP Tile Grid - North 12-inch (200 Scale) [Dataset]. https://vgin.vdem.virginia.gov/datasets/e4d5e330cd414d22894bf55d323d5051
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    Dataset updated
    Jun 25, 2014
    Dataset authored and provided by
    Virginia Geographic Information Network
    Area covered
    Description

    Tile polygons used by the Virginia Base Mapping Program (VBMP) for the production, storage and delivery of base map data such as as orthoimagery, digital terrain models and lidar data. Grids exist for both the North and South Virginia State Plane Zones, and at scales of 1 in = 200 ft (1-ft pixel imagery), 1 in = 100 ft (6-inch pixel imagery),and 1 in = 50 ft (3-inch pixel imagery). The tiles nest within the tiles at larger scale. Please note that not all products are available at all scales for each VBMP project year.

  10. d

    ARCHIVED: Parking Citations

    • catalog.data.gov
    • data.lacity.org
    • +1more
    Updated Jan 5, 2024
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    data.lacity.org (2024). ARCHIVED: Parking Citations [Dataset]. https://catalog.data.gov/dataset/parking-citations-0e4fd
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    Dataset updated
    Jan 5, 2024
    Dataset provided by
    data.lacity.org
    Description

    New Parking Citations dataset here: https://data.lacity.org/Transportation/Parking-Citations/4f5p-udkv/about_data ---Archived as of September 2023--- Parking citations with latitude / longitude (XY) in US Feet coordinates according to the California State Plane Coordinate System - Zone 5 (https://www.conservation.ca.gov/cgs/rgm/state-plane-coordinate-system). For more information on Geographic vs Projected coordinate systems, read here: https://www.esri.com/arcgis-blog/products/arcgis-pro/mapping/gcs_vs_pcs/ For information on how to change map projections, read here: https://learn.arcgis.com/en/projects/make-a-web-map-without-web-mercator/

  11. d

    USGS High Resolution Orthoimagery for DuPage County, Illinois:...

    • datadiscoverystudio.org
    jpeg2000
    Updated Jan 1, 2014
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    Cook County Board of Commissioners (2014). USGS High Resolution Orthoimagery for DuPage County, Illinois: 16TDM215365_201203_0x1500m_4B_1 [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/c5e9adc7174543249cd37ff8648a655b/html
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    jpeg2000(233.883927)Available download formats
    Dataset updated
    Jan 1, 2014
    Dataset provided by
    United States Geological Surveyhttp://www.usgs.gov/
    Cook County Board of Commissioners
    Area covered
    Description

    'This file is a digital geospatial Environmental Systems Research Institute (Esri) ArcGIS polygon feature class of the tile index for Cook, DuPage, Grundy, Kane, Kendall, Lake, McHenry, and Will County, Illinois. Each tile is 2,500' on a side, and covers an area of 6,250,000 square feet or 143 acres. There are a total of 18,905 tiles, and each tile represents the boundary or extent of each ortho image. This dataset includes a coordinate based tile identification number, a delivery area number, and a project tile category. The delivery area numbers and project tile attributes are a proprietary classification that are unique to this project. This dataset is stored within an ArcGIS 10.1 geodatabase. This dataset is projected using the Transverse Mercator map projection. The grid coordinate system used is the Illinois State Plane Coordinate System, East Zone (Zone Number Zone 3776, FIPS 1201), NAD 83 NSRS2007 (horizontal datum), with ground coordinates expressed in U.S. Survey Feet.'An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. There is no image overlap between adjacent files. Data received at Earth Resources Observation and Science Center (EROS) were reprojected from: Projection: NAD_1983_HARN_StatePlane_Illinois_East_FIPS_1201 Resolution: 6 inch Type: 4 Band to: Standard Product Projection: NAD_1983_UTM_Zone_16N Standard Product Resolution: 0.1500 m Rows: 10000 Columns: 10000 and resampled to align to the U.S. National Grid (USNG) using The National Map. The naming convention is based on the U.S. National Grid (USNG), taking the coordinates of the SW corner of the orthoimage. The metadata were imported and updated for display through The National Map at http://nationalmap.gov/viewer.html Chip-level metadata are provided in HTML and XML format. Data were compressed utilizing IAS software. The compression was JPEG2000 Lossy Compressed. The file format created was .jp2.

  12. VBMP Digital Terrain Models - 2006/2007 (VA State Plane South)

    • data.wu.ac.at
    • cloud.csiss.gmu.edu
    • +2more
    fema-dcs-terrain
    Updated Nov 14, 2017
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    Federal Emergency Management Agency, Department of Homeland Security (2017). VBMP Digital Terrain Models - 2006/2007 (VA State Plane South) [Dataset]. https://data.wu.ac.at/schema/data_gov/MzRkODJmMTItOWRhYy00OWJiLWEyNjgtYmM3ZjJhMjJkNWRi
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    fema-dcs-terrainAvailable download formats
    Dataset updated
    Nov 14, 2017
    Dataset provided by
    Federal Emergency Management Agencyhttp://www.fema.gov/
    License

    U.S. Government Workshttps://www.usa.gov/government-works
    License information was derived automatically

    Area covered
    5061e7cd5a7f9beee81ffd26b15163a2560ff8f0
    Description

    Terrain data, as defined in FEMA Guidelines and Specifications, Appendix M: Data Capture Standards, describes the digital topographic data that were used to create the elevation data representing the terrain environment of a watershed and/or floodplain. Terrain data requirements allow for flexibility in the types of information provided as sources used to produce final terrain deliverables. Once this type of data is provided, FEMA will be able to account for the origins of the flood study elevation data. These files contain Digital Elevation Model (DTM) file data for the State of Virginia developed from imagery acquired in spring 2006 and 2007. In the spring of 2006, the Commonwealth of Virginia, through the Virginia Geographic Information Network Division (herein referred to as VGIN) of the Virginia Information Technologies Agency (VITA) contracted with the Sanborn Map Company to provide Aerial data acquisition, ground control, aerotriangulation and development of statewide DTM and digital orthophotography. Approximately 15% of the State was acquired in the year 2006 and the balance in 2007. All data acquired in 2006 is jurisdiction based. The data acquired in 2007 includes overlap along the boundaries of jurisdictions captured in the previous year 2006. This ensures each jurisdiction has full coverage from either Year 2006 or 2007, without 'mixing' imagery vintage along the edge of a jurisdiction. The project encompasses the entire land area of the Commonwealth of Virginia. The State boundary is buffered by 1000'. Coastal areas of the State bordering the Atlantic Ocean or the Chesapeake Bay shall be buffered by 1000' or the extent of man-made features extending from shore. The entire State was initially designed to support 1"=200' (1:2400) scale mapping. Jurisdictions throughout the State were provided an option to upgrade to a 1"=100' (1:1200) map scale.

  13. O

    CT 2016 Elevation (DEM) (State Plane)

    • data.ct.gov
    • geodata.ct.gov
    • +1more
    application/rdfxml +5
    Updated Feb 16, 2025
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    UConn (2025). CT 2016 Elevation (DEM) (State Plane) [Dataset]. https://data.ct.gov/Environment-and-Natural-Resources/CT-2016-Elevation-DEM-State-Plane-/b4in-wxyj
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    csv, tsv, json, application/rssxml, xml, application/rdfxmlAvailable download formats
    Dataset updated
    Feb 16, 2025
    Dataset authored and provided by
    UConn
    Description

    This image service is available through CTECO, a partnership between UConn CLEAR and CT DEEP. This layer is a hydro-flattened bare earth digital elevation model (DEM) derived from the classified Lidar point cloud covering the state of Connecticut.


    This service (called Statewide2023_CTspNAD83_2011) will persist even as other elevation dates become available. Connect to the Elevation service (web Mercator projection) to always have the latest and greatest service without changing the connection. Visit the CT ECO Map and Image Services page for a complete list of available elevation services.

    2016 Statewide
    Extent: Connecticut
    Dates: 2016 (March 11 - April 16), between snow melt and leaf out
    Data Info: statewide Digital Elevation Model (DEM), which is a bare earth elevation raster with no functions applied
    Pixel Resolution: 2 foot DEM raster derived from QL2 Lidar point cloud with a minimum of 2 points per square meter. The bare earth elevation from the points were averaged to get the elevation value for each pixel in the DEM.
    Projection: CT State Plane NAD 83 (2011) Feet (EPSG 6434)
    Service Projection: CT State Plane NAD 83 (2011) Feet (EPSG 6434)

    More Information

    Tips
    - The elevation service contains processing templates like hillshade, slope, and aspect, that can be applied to change the appearance of the layer.
    - Symbology is another useful and easy way to display the elevation differently.

    Credit and Funding

  14. v

    VT Basemap, VT State Plane Meters

    • geodata.vermont.gov
    • sov-vcgi.opendata.arcgis.com
    • +2more
    Updated Oct 21, 2016
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    VT Center for Geographic Information (2016). VT Basemap, VT State Plane Meters [Dataset]. https://geodata.vermont.gov/documents/e0540446dfb74cd6a60f48b900c41a28
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    Dataset updated
    Oct 21, 2016
    Dataset authored and provided by
    VT Center for Geographic Information
    License

    MIT Licensehttps://opensource.org/licenses/MIT
    License information was derived automatically

    Area covered
    Description

    VT Basemap, VT State Plane Meters

  15. DIGITAL FLOOD INSURANCE RATE MAP DATABASE, BLAINE COUNTY, OREGON

    • catalog.data.gov
    Updated Nov 8, 2023
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    Federal Emergency Management Agency (Point of Contact) (2023). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, BLAINE COUNTY, OREGON [Dataset]. https://catalog.data.gov/dataset/digital-flood-insurance-rate-map-database-blaine-county-oregon
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    Dataset updated
    Nov 8, 2023
    Dataset provided by
    Federal Emergency Management Agencyhttp://www.fema.gov/
    Area covered
    Blaine County
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the State Plane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12000.

  16. v

    Next Generation 9-1-1 PSAP Polygons in Virginia State Plane South NAD83

    • vgin.vdem.virginia.gov
    Updated Mar 8, 2022
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    Virginia Geographic Information Network (2022). Next Generation 9-1-1 PSAP Polygons in Virginia State Plane South NAD83 [Dataset]. https://vgin.vdem.virginia.gov/maps/6f94cca189824cb48eb926411fb72057
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    Dataset updated
    Mar 8, 2022
    Dataset authored and provided by
    Virginia Geographic Information Network
    Area covered
    Description

    Since 2015, the Public Service Communication Board, VITA Integrated Services Program staff, and staffs from public safety answering points (PSAPs) have been planning and implementing the deployment of Next Generation 9-1-1 (NG911) for the Commonwealth. Transitioning from the legacy telecommunication network provides numerous benefits and flexibility looking towards the future. As the emergency services internet protocol network (ESInet) is deployed, geospatial call routing uses geographic information system (GIS) data and the 911 caller’s location information to identify which PSAP will receive the call.The process of geospatial call routing relies on the civic address layers (address points and road center line maintained by the localities) and a GIS layer representing PSAP boundaries for the operations area for each PSAP. The PSAP boundary file must ensure that every square foot of the Commonwealth is assigned to one and only one PSAP. There can be no gaps or overlaps. PSAPs sharing boundaries with neighboring states must also meet this same rigor to ensure efficient and consistent delivery of every 911 call initiated.This feature class contains the best available PSAP Boundary Line segments received and processed by VGIN into Virginia State Plane South polygons. All segments are agreed to, but geometry may change in the future with new agreements. The data is available as a feature service https://vginmaps.vdem.virginia.gov/arcgis/rest/services/NG911/NG911_VA_StatePlaneSouth_NAD83_PSAP_Polygon/FeatureServer. Guidance on connecting to feature services is available here: https://vginmaps.vdem.virginia.gov/download/ng911/Working_with_VGIN_Feature_Services.pdf. Additional resources and recommendations on GIS related topics are available on the VGIN 9-1-1 & GIS page.Data is believed to be current for its intended purpose. Data is provided as is. All warranties regarding the accuracy of the data and any representation or inferences derived there from are hereby expressly disclaimed.

  17. DIGITAL FLOOD INSURANCE RATE MAP DATABASE, BENEWAH COUNTY, USA

    • catalog.data.gov
    Updated Nov 8, 2023
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    Federal Emergency Management Agency (Point of Contact) (2023). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, BENEWAH COUNTY, USA [Dataset]. https://catalog.data.gov/dataset/digital-flood-insurance-rate-map-database-benewah-county-usa
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    Dataset updated
    Nov 8, 2023
    Dataset provided by
    Federal Emergency Management Agencyhttp://www.fema.gov/
    Area covered
    Benewah County, United States
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the Transverse Mercator projection and State Plane coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:24,000.

  18. DIGITAL FLOOD INSURANCE RATE MAP DATABASE, KENAI PENINSULA BOROUGH, AK, USA

    • catalog.data.gov
    • gimi9.com
    Updated Nov 8, 2023
    + more versions
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    Federal Emergency Management Agency (Point of Contact) (2023). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, KENAI PENINSULA BOROUGH, AK, USA [Dataset]. https://catalog.data.gov/dataset/digital-flood-insurance-rate-map-database-kenai-peninsula-borough-ak-usa
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    Dataset updated
    Nov 8, 2023
    Dataset provided by
    Federal Emergency Management Agencyhttp://www.fema.gov/
    Area covered
    Kenai Peninsula Borough, United States, Alaska
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth?s surface using the State Plane coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.

  19. DIGITAL FLOOD INSURANCE RATE MAP DATABASE, CITY OF SHISHMAREF, AK, USA

    • catalog.data.gov
    Updated Nov 8, 2023
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    DIGITAL FLOOD INSURANCE RATE MAP DATABASE, CITY OF SHISHMAREF, AK, USA [Dataset]. https://catalog.data.gov/dataset/digital-flood-insurance-rate-map-database-city-of-shishmaref-ak-usa
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    Dataset updated
    Nov 8, 2023
    Dataset provided by
    Federal Emergency Management Agencyhttp://www.fema.gov/
    Area covered
    Shishmaref, United States, Alaska
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth?s surface using the State Plane coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.

  20. a

    Alpha SPCS2022 Multizone Complete Zones Tiled Image Layer

    • noaa.hub.arcgis.com
    Updated May 24, 2024
    + more versions
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    NOAA GeoPlatform (2024). Alpha SPCS2022 Multizone Complete Zones Tiled Image Layer [Dataset]. https://noaa.hub.arcgis.com/maps/75b9d39d7f8a4a9f9095cd5acd780cf4
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    Dataset updated
    May 24, 2024
    Dataset authored and provided by
    NOAA GeoPlatform
    License

    CC0 1.0 Universal Public Domain Dedicationhttps://creativecommons.org/publicdomain/zero/1.0/
    License information was derived automatically

    Area covered
    Wrangel Island, Bering Sea, North Pacific Ocean, Pacific Ocean, Proliv Longa, Proliv Longa
    Description

    NOAA’s National Geodetic Survey (NGS) is in the process of modernizing the National Spatial Reference System (NSRS). As part of NSRS Modernization, the State Plane Coordinate System (SPCS) will be updated to SPCS2022. This Tiled Image Layer displays the distortion for the Multizone Complete Zones for the preliminary SPCS2022 zone layers. This layer is intended for NGS customers, stakeholders, partners, and other constituents to view and provide feedback on the SPCS2022 zones that are being planned for release. NGS is performing internal reviews and working with constituents to finalize the zone designs. These zones are preliminary and should not be considered the final definitions.Alpha SPCS2022 ExperienceAlpha SPCS2022 All Zones Web MapAlpha SPCS2022 Multizone Complete Zones Web MapData SourcesInformation about SPCS2022 can be found on the SPCS2022 Alpha web pages.https://alpha.ngs.noaa.gov/SPCS/Exact preliminary zone definitions can be viewed at the SPCS2022 Alpha zone definition web page.https://alpha.ngs.noaa.gov/SPCS/zone-definitions.shtmlExact preliminary zone definitions can be downloaded from the SPCS2022 Alpha download page.https://alpha.ngs.noaa.gov/SPCS/download.shtmlDistortionLinear distortion is the same as map scale error at the ground surface, given in parts per million (ppm) rather than as a ratio. For example, distortion of 100 ppm is the same as 10 cm per km, 0.53 ft per mile, or a ratio of 1 part in 10,000. So for an actual horizontal distance of 1 mile, the projected (map grid) distance would be 0.53 ft shorter for negative 100 ppm distortion, and 0.53 ft longer for positive 100 ppm distortion.Point of ContactPlease email the NGS Information Center for any questions at ngs.infocenter@noaa.gov

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Environmental Systems Research Institute, Inc. (ESRI) (Point of Contact) (2020). United States Stateplane Zones - NAD83 [Dataset]. https://catalog.data.gov/dataset/united-states-stateplane-zones-nad83
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United States Stateplane Zones - NAD83

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Dataset updated
Dec 2, 2020
Dataset provided by
Esrihttp://esri.com/
Area covered
United States
Description

U.S. State Plane Zones (NAD 1983) represents the State Plane Coordinate System (SPCS) Zones for the 1983 North American Datum within United States.

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