12 datasets found
  1. W

    USA Flood Hazard Areas

    • wifire-data.sdsc.edu
    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    • +1more
    csv, esri rest +4
    Updated Jul 14, 2020
    + more versions
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    CA Governor's Office of Emergency Services (2020). USA Flood Hazard Areas [Dataset]. https://wifire-data.sdsc.edu/dataset/usa-flood-hazard-areas
    Explore at:
    geojson, esri rest, csv, zip, kml, htmlAvailable download formats
    Dataset updated
    Jul 14, 2020
    Dataset provided by
    CA Governor's Office of Emergency Services
    License

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

    Area covered
    United States
    Description
    The Federal Emergency Management Agency (FEMA) produces Flood Insurance Rate maps and identifies Special Flood Hazard Areas as part of the National Flood Insurance Program's floodplain management. Special Flood Hazard Areas have regulations that include the mandatory purchase of flood insurance.

    Dataset Summary

    Phenomenon Mapped: Flood Hazard Areas
    Coordinate System: Web Mercator Auxiliary Sphere
    Extent: 50 United States plus Puerto Rico, the US Virgin Islands, Guam, the Northern Mariana Islands and American Samoa
    Visible Scale: The layer is limited to scales of 1:1,000,000 and larger. Use the USA Flood Hazard Areas imagery layer for smaller scales.
    Publication Date: April 1, 2019

    This layer is derived from the April 1, 2019 version of the National Flood Hazard Layer feature class S_Fld_Haz_Ar. The data were aggregated into eight classes to produce the Esri Symbology field based on symbology provided by FEMA. All other layer attributes are derived from the National Flood Hazard Layer. The layer was projected to Web Mercator Auxiliary Sphere and the resolution set to 1 meter.

    To improve performance Flood Zone values "Area Not Included", "Open Water", "D", "NP", and No Data were removed from the layer. Areas with Flood Zone value "X" subtype "Area of Minimal Flood Hazard" were also removed. An imagery layer created from this dataset provides access to the full set of records in the National Flood Hazard Layer.

    A web map featuring this layer is available for you to use.

    What can you do with this Feature Layer?

    Feature layers work throughout the ArcGIS system. Generally your work flow with feature layers will begin in ArcGIS Online or ArcGIS Pro. Below are just a few of the things you can do with a feature service in Online and Pro.

    ArcGIS Online
    • Add this layer to a map in the map viewer. The layer is limited to scales of approximately 1:1,000,000 or larger but an imagery layer created from the same data can be used at smaller scales to produce a webmap that displays across the full range of scales. The layer or a map containing it can be used in an application.
    • Change the layer’s transparency and set its visibility range
    • Open the layer’s attribute table and make selections and apply filters. Selections made in the map or table are reflected in the other. Center on selection allows you to zoom to features selected in the map or table and show selected records allows you to view the selected records in the table.
    • Change the layer’s style and filter the data. For example, you could change the symbology field to Special Flood Hazard Area and set a filter for = “T” to create a map of only the special flood hazard areas.
    • Add labels and set their properties
    • Customize the pop-up
    ArcGIS Pro
    • Add this layer to a 2d or 3d map. The same scale limit as Online applies in Pro
    • Use as an input to geoprocessing. For example, copy features allows you to select then export portions of the data to a new feature class. Areas up to 1,000-2,000 features can be exported successfully.
    • Change the symbology and the attribute field used to symbolize the data
    • Open table and make interactive selections with the map
    • Modify the pop-ups
    • Apply Definition Queries to create sub-sets of the layer
    This layer is part of the Living Atlas of the World that provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics.
  2. USA Soils Map Units

    • hub.arcgis.com
    • mapdirect-fdep.opendata.arcgis.com
    • +7more
    Updated Apr 5, 2019
    + more versions
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    Esri (2019). USA Soils Map Units [Dataset]. https://hub.arcgis.com/maps/06e5fd61bdb6453fb16534c676e1c9b9
    Explore at:
    Dataset updated
    Apr 5, 2019
    Dataset authored and provided by
    Esrihttp://esri.com/
    Area covered
    Description

    Soil map units are the basic geographic unit of the Soil Survey Geographic Database (SSURGO). The SSURGO dataset is a compilation of soils information collected over the last century by the Natural Resources Conservation Service (NRCS). Map units delineate the extent of different soils. Data for each map unit contains descriptions of the soil’s components, productivity, unique properties, and suitability interpretations.Each soil type has a unique combination of physical, chemical, nutrient and moisture properties. Soil type has ramifications for engineering and construction activities, natural hazards such as landslides, agricultural productivity, the distribution of native plant and animal life and hydrologic and other physical processes. Soil types in the context of climate and terrain can be used as a general indicator of engineering constraints, agriculture suitability, biological productivity and the natural distribution of plants and animals. Data from the gSSURGO databasewas used to create this layer. To download ready-to-use project packages of useful soil data derived from the SSURGO dataset, please visit the USA SSURGO Downloader app. Dataset SummaryPhenomenon Mapped: Soils of the United States and associated territoriesGeographic Extent: The 50 United States, Puerto Rico, Guam, US Virgin Islands, Marshall Islands, Northern Marianas Islands, Palau, Federated States of Micronesia, and American SamoaCoordinate System: Web Mercator Auxiliary SphereVisible Scale: 1:144,000 to 1:1,000Source: USDA Natural Resources Conservation ServiceUpdate Frequency: AnnualPublication Date: December 2024 What can you do with this layer?ArcGIS OnlineFeature layers work throughout the ArcGIS system. Generally your work flow with feature layers will begin in ArcGIS Online or ArcGIS Pro.Below are just a few of the things you can do with a feature service in Online and Pro.Add this layer to a map in the map viewer. The layer is limited to scales of approximately 1:144,000 or larger but avector tile layercreated from the same data can be used at smaller scales to produce awebmapthat displays across the full scale range. The layer or a map containing it can be used in an application.Change the layer’s transparency and set its visibility rangeOpen the layer’s attribute table and make selections and apply filters. Selections made in the map or table are reflected in the other. Center on selection allows you to zoom to features selected in the map or table and show selected records allows you to view the selected records in the table.Change the layer’s style and filter the data. For example, you could set a filter forFarmland Class= "All areas are prime farmland" to create a map of only prime farmland.Add labels and set their propertiesCustomize the pop-up ArcGIS ProAdd this layer to a 2d or 3d map. The same scale limit as Online applies in ProUse as an input to geoprocessing. For example, copy features allows you to select then export portions of the data to a new feature class.Change the symbology and the attribute field used to symbolize the dataOpen table and make interactive selections with the mapModify the pop-upsApply Definition Queries to create sub-sets of the layerThis layer is part of theLiving Atlas of the Worldthat provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics. Data DictionaryAttributesKey fields from nine commonly used SSURGO tables were compiled to create the 173 attribute fields in this layer. Some fields were joined directly to the SSURGO Map Unit polygon feature class while others required summarization and other processing to create a 1:1 relationship between the attributes and polygons prior to joining the tables. Attributes of this layer are listed below in their order of occurrence in the attribute table and are organized by the SSURGO table they originated from and the processing methods used on them. Map Unit Polygon Feature Class Attribute TableThe fields in this table are from the attribute table of the Map Unit polygon feature class which provides the geographic extent of the map units.Area SymbolSpatial VersionMap Unit Symbol Map Unit TableThe fields in this table have a 1:1 relationship with the map unit polygons and were joined to the table using the Map Unit Key field.Map Unit NameMap Unit KindFarmland ClassInterpretive FocusIntensity of MappingIowa Corn Suitability Rating Legend TableThis table has 1:1 relationship with the Map Unit table and was joined using the Legend Key field.Project Scale Survey Area Catalog TableThe fields in this table have a 1:1 relationship with the polygons and were joined to the Map Unit table using the Survey Area Catalog Key and Legend Key fields.Survey Area VersionTabular Version Map Unit Aggregated Attribute TableThe fields in this table have a 1:1 relationship with the map unit polygons and were joined to the Map Unit attribute table using the Map Unit Key field. Slope Gradient - Dominant ComponentSlope Gradient - Weighted AverageBedrock Depth - MinimumWater Table Depth - Annual MinimumWater Table Depth - April to June MinimumFlooding Frequency - Dominant ConditionFlooding Frequency - MaximumPonding Frequency - PresenceAvailable Water Storage 0-25 cm - Weighted AverageAvailable Water Storage 0-50 cm - Weighted AverageAvailable Water Storage 0-100 cm - Weighted AverageAvailable Water Storage 0-150 cm - Weighted AverageDrainage Class - Dominant ConditionDrainage Class - WettestHydrologic Group - Dominant ConditionIrrigated Capability Class - Dominant ConditionIrrigated Capability Class - Proportion of Mapunit with Dominant ConditionNon-Irrigated Capability Class - Dominant ConditionNon-Irrigated Capability Class - Proportion of Mapunit with Dominant ConditionRating for Buildings without Basements - Dominant ConditionRating for Buildings with Basements - Dominant ConditionRating for Buildings with Basements - Least LimitingRating for Buildings with Basements - Most LimitingRating for Septic Tank Absorption Fields - Dominant ConditionRating for Septic Tank Absorption Fields - Least LimitingRating for Septic Tank Absorption Fields - Most LimitingRating for Sewage Lagoons - Dominant ConditionRating for Sewage Lagoons - Dominant ComponentRating for Roads and Streets - Dominant ConditionRating for Sand Source - Dominant ConditionRating for Sand Source - Most ProbableRating for Paths and Trails - Dominant ConditionRating for Paths and Trails - Weighted AverageErosion Hazard of Forest Roads and Trails - Dominant ComponentHydric Classification - PresenceRating for Manure and Food Processing Waste - Weighted Average Component Table – Dominant ComponentMap units have one or more components. To create a 1:1 join component data must be summarized by map unit. For these fields a custom script was used to select the component with the highest value for the Component Percentage Representative Value field (comppct_r). Ties were broken with the Slope Representative Value field (slope_r). Components with lower average slope were selected as dominant. If both soil order and slope were tied, the first value in the table was selected. Component Percentage - Low ValueComponent Percentage - Representative ValueComponent Percentage - High ValueComponent NameComponent KindOther Criteria Used to Identify ComponentsCriteria Used to Identify Components at the Local LevelRunoff ClassSoil loss tolerance factorWind Erodibility IndexWind Erodibility GroupErosion ClassEarth Cover 1Earth Cover 2Hydric ConditionHydric RatingAspect Range - Counter Clockwise LimitAspect - Representative ValueAspect Range - Clockwise LimitGeomorphic DescriptionNon-Irrigated Capability SubclassNon-Irrigated Unit Capability ClassIrrigated Capability SubclassIrrigated Unit Capability ClassConservation Tree Shrub GroupGrain Wildlife HabitatGrass Wildlife HabitatHerbaceous Wildlife HabitatShrub Wildlife HabitatConifer Wildlife HabitatHardwood Wildlife HabitatWetland Wildlife HabitatShallow Water Wildlife HabitatRangeland Wildlife HabitatOpenland Wildlife HabitatWoodland Wildlife HabitatWetland Wildlife HabitatSoil Slip PotentialSusceptibility to Frost HeavingConcrete CorrosionSteel CorrosionTaxonomic ClassTaxonomic OrderTaxonomic SuborderGreat GroupSubgroupParticle SizeParticle Size ModCation Exchange Activity ClassCarbonate ReactionTemperature ClassMoist SubclassSoil Temperature RegimeEdition of Keys to Soil Taxonomy Used to Classify SoilCalifornia Storie IndexComponent Key Component Table – Weighted AverageMap units may have one or more soil components. To create a 1:1 join, data from the Component table must be summarized by map unit. For these fields a custom script was used to calculate an average value for each map unit weighted by the Component Percentage Representative Value field (comppct_r).Slope Gradient - Low ValueSlope Gradient - Representative ValueSlope Gradient - High ValueSlope Length USLE - Low ValueSlope Length USLE - Representative ValueSlope Length USLE - High ValueElevation - Low ValueElevation - Representative ValueElevation - High ValueAlbedo - Low ValueAlbedo - Representative ValueAlbedo - High ValueMean Annual Air Temperature - Low ValueMean Annual Air Temperature - Representative ValueMean Annual Air Temperature - High ValueMean Annual Precipitation - Low ValueMean Annual Precipitation - Representative ValueMean Annual Precipitation - High ValueRelative Effective Annual Precipitation - Low ValueRelative Effective Annual Precipitation - Representative ValueRelative Effective Annual Precipitation - High ValueDays between Last and First Frost - Low ValueDays between Last and First Frost - Representative ValueDays between Last and First Frost - High ValueRange Forage Annual Potential Production - Low ValueRange Forage Annual Potential Production - Representative ValueRange Forage Annual Potential Production - High ValueInitial Subsidence - Low ValueInitial Subsidence - Representative ValueInitial Subsidence -

  3. g

    Wasser Internet — Water catchment areas according to LAWA, 50 100 km² |...

    • gimi9.com
    + more versions
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    Wasser Internet — Water catchment areas according to LAWA, 50 100 km² | gimi9.com [Dataset]. https://gimi9.com/dataset/eu_38b6535b-0d46-a0fa-a59b-5c6b01f8cba2
    Explore at:
    License

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

    Description

    The Map Service (WMS Group) presents selected water data of the Saarland:water catchment areas according to LAWA, 50_100 km², with LAWA area codes; Viewing object in the GDZ; exported to GDZ_GDB.gdb MultiFeature class consists of the area-based feature class and the corresponding business table with the property data, exported as a simple feature class in Filegeodatabase; In addition to numerous database internal attributes, the following user-relevant attributes are available: GWNR: Number of catchment area GWNAM Water name FLAECHE: Area size

  4. e

    Water sections GEF

    • data.europa.eu
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    Water sections GEF [Dataset]. https://data.europa.eu/data/datasets/0a1775c5-93b3-460c-b71e-fbdca21dcc17
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    Description

    Water sections GEF (water development capability); Viewing object in the GDZ; exported to GDZ_GDB.gdb; Aggregation of ATKIS waters according to GEF_ID (water management attribute for linking with information on water development capability) Multifeature class consists of the lined feature class GDZ2010.L_vlgef) and the corresponding business table (GDZ2010.vlgef) with the material data. exported as a simple feature class in ene Filegeodatabase; The following user-relevant attribute is available: GEFID: Water development capability number (fided)

  5. a

    NFHL Flood Zones

    • hub.arcgis.com
    • gis-bradd-ky.opendata.arcgis.com
    Updated May 20, 2022
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    Barren River Area Development District (2022). NFHL Flood Zones [Dataset]. https://hub.arcgis.com/maps/BRADD-KY::nfhl-flood-zones
    Explore at:
    Dataset updated
    May 20, 2022
    Dataset authored and provided by
    Barren River Area Development District
    Area covered
    Description

    The Federal Emergency Management Agency (FEMA) produces Flood Insurance Rate maps and identifies Special Flood Hazard Areas as part of the National Flood Insurance Program's floodplain management. Special Flood Hazard Areas have regulations that include the mandatory purchase of flood insurance.Dataset SummaryPhenomenon Mapped: Flood Hazard AreasCoordinate System: Web Mercator Auxiliary SphereExtent: Contiguous United States, Alaska, Hawaii, Puerto Rico, Guam, US Virgin Islands, Northern Marianas Islands and American Samoa.Visible Scale: The layer is limited to scales of 1:1,000,000 and larger. Use the USA Flood Hazard Areas imagery layer for smaller scales.Source: Federal Emergency Management AgencyPublication Date: October 13, 2021This layer is derived from the October 13, 2021 version of the National Flood Hazard Layer feature class S_Fld_Haz_Ar. The data were aggregated into eight classes to produce the Esri Symbology field based on symbology provided by FEMA. All other layer attributes are derived from the National Flood Hazard Layer.The layer was projected to Web Mercator Auxiliary Sphere, then the repair geometry geoprocessing tool was run on it. Its resolution was set to 0.0001 meter.To improve performance Flood Zone values "Area Not Included", "Open Water", "D", "NP", and No Data were removed from the layer. Areas with Flood Zone value "X" subtype "Area of Minimal Flood Hazard" were also removed. An imagery layer created from this dataset provides access to the full set of records in the National Flood Hazard Layer.A web map featuring this layer is available for you to use.What can you do with this Feature Layer?Feature layers work throughout the ArcGIS system. Generally your work flow with feature layers will begin in ArcGIS Online or ArcGIS Pro. Below are just a few of the things you can do with a feature service in Online and Pro.ArcGIS OnlineAdd this layer to a map in the map viewer. The layer is limited to scales of approximately 1:1,000,000 or larger but an imagery layer created from the same data can be used at smaller scales to produce a webmap that displays across the full range of scales. The layer or a map containing it can be used in an application.Change the layer’s transparency and set its visibility rangeOpen the layer’s attribute table and make selections and apply filters. Selections made in the map or table are reflected in the other. Center on selection allows you to zoom to features selected in the map or table and show selected records allows you to view the selected records in the table.Change the layer’s style and filter the data. For example, you could change the symbology field to Special Flood Hazard Area and set a filter for = “T” to create a map of only the special flood hazard areas. Add labels and set their propertiesCustomize the pop-upUse in analysis tools to discover patterns in the dataArcGIS ProAdd this layer to a 2d or 3d map. The same scale limit as Online applies in ProUse as an input to geoprocessing. For example, copy features allows you to select then export portions of the data to a new feature class. Areas up to 1,000-2,000 features can be exported successfully.Change the symbology and the attribute field used to symbolize the dataOpen table and make interactive selections with the mapModify the pop-upsApply Definition Queries to create sub-sets of the layerThis layer is part of the Living Atlas of the World that provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics.

  6. O

    Census Tract 2010

    • data.sccgov.org
    Updated May 2, 2023
    + more versions
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    (2023). Census Tract 2010 [Dataset]. https://data.sccgov.org/dataset/Census-Tract-2010/nxaw-7ash
    Explore at:
    xlsx, kml, xml, kmz, csv, application/geo+jsonAvailable download formats
    Dataset updated
    May 2, 2023
    Description

    Census tract geometry within Santa Clara County from the 2010 Census Tiger shapefiles.Feature class derived from Tiger line shapefile of 2010 census tracts for Santa Clara County and geographic identifier table, G001. Some attribute names may be when exporting as shapefile due to 10 character limitation of shapefile attribute names. THE GIS DATA IS PROVIDED "AS IS". THE COUNTY MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OR MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE ACCURACY, COMPLETENESS, VALUE, QUALITY, VALIDITY, MERCHANTABILITY, SUITABILITY, AND CONDITION, OF THE GIS DATA. USER'S OF COUNTY'S GIS DATA ARE HEREBY NOTIFIED THAT CURRENT PUBLIC PRIMARY INFORMATION SOURCES SHOULD BE CONSULTED FOR VERIFICATION OF THE DATA AND INFORMATION CONTAINED HEREIN. SINCE THE GIS DATA IS DYNAMIC, IT WILL BY ITS NATURE BE INCONSISTENT WITH THE OFFICIAL COUNTY DATA. ANY USE OF COUNTY'S GIS DATA WITHOUT CONSULTING OFFICIAL PUBLIC RECORDS FOR VERIFICATION IS DONE EXCLUSIVELY AT THE RISK OF THE PARTY MAKING SUCH USE.

  7. w

    Surficial Geology of Alberta: Ungeneralized Digital Mosaic (GIS data,...

    • data.wu.ac.at
    • open.alberta.ca
    • +2more
    html, shp, xml
    Updated Jun 27, 2018
    + more versions
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    Government of Alberta | Gouvernement de l'Alberta (2018). Surficial Geology of Alberta: Ungeneralized Digital Mosaic (GIS data, polygon features) [Dataset]. https://data.wu.ac.at/schema/www_data_gc_ca/ODVlN2ExMzctMTlmNy00MzI1LTlmY2EtMTJiYWY1NzAxNmM4
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    html, shp, xmlAvailable download formats
    Dataset updated
    Jun 27, 2018
    Dataset provided by
    Government of Alberta | Gouvernement de l'Alberta
    License

    http://open.alberta.ca/licencehttp://open.alberta.ca/licence

    Area covered
    Alberta
    Description

    This GIS dataset is a compilation of existing surficial map information for Alberta tiled into one layer. It was an interim product to produce the generalized polygon dataset (Alberta Geological Survey DIG 2013-0002), which is suitable for presentation and use at 1:1,000,000 scale. We prepared the data by appending existing GIS datasets of each surficial map of Alberta into one provincial layer with a standard attribute table. Data sources included published Alberta Geological Survey and Geological Survey of Canada maps, one master's thesis, and ecological (biophysical) land-classification maps of the mountain parks. When possible, we transferred all of the legend data from each map source into the standard schema. As part of our 1:1,000,000-scale map project, we completed mapping the unmapped areas of Alberta at roughly 500,000 to 1,000,000 scale. This dataset includes those previously unpublished data. With this dataset users can, for the first time, view the surficial geology of different map areas done at different scales and map projections by different geologists according to different legends in one GIS layer. We exported the feature class as an Esri shapefile (SurfMosaic_py_ll.shp) for public distribution. The layer file 1M_scale_legend.lyr is also included for the convenience of Esri software users (version 9.2) to render the map according to the common legend shown on Alberta Geological Survey Map 601.

  8. a

    DEC10 BLOCKGROUP SCC

    • hub.arcgis.com
    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    Updated Jun 14, 2016
    + more versions
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    County of Santa Clara (2016). DEC10 BLOCKGROUP SCC [Dataset]. https://hub.arcgis.com/maps/sccgov::dec10-blockgroup-scc
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    Dataset updated
    Jun 14, 2016
    Dataset authored and provided by
    County of Santa Clara
    License

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

    Area covered
    Description

    Feature class derived from Tiger line shapefile of 2010 census blockgroups for Santa Clara County and geographic identifier table, G001. Some attribute names may be when exporting as shapefile due to 10 character limitation of shapefile attribute names.

  9. a

    Zip Codes

    • hub.arcgis.com
    Updated Jun 15, 2016
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    County of Santa Clara (2016). Zip Codes [Dataset]. https://hub.arcgis.com/datasets/sccgov::zip-codes/geoservice
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    Dataset updated
    Jun 15, 2016
    Dataset authored and provided by
    County of Santa Clara
    License

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

    Area covered
    Description

    Feature class derived from Tiger line shapefile of 2010 census ZCTA for Santa Clara County and geographic identifier table, G001. Some attribute names may be truncated when exporting as shapefile due to 10 character limitation of shapefile attribute names. ZCTA's that are partially within Santa Clara County have been excluded from this dataset.

  10. a

    DEC10 TRACT URBAN SCC

    • hub.arcgis.com
    Updated Jun 14, 2016
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    County of Santa Clara (2016). DEC10 TRACT URBAN SCC [Dataset]. https://hub.arcgis.com/maps/sccgov::dec10-tract-urban-scc
    Explore at:
    Dataset updated
    Jun 14, 2016
    Dataset authored and provided by
    County of Santa Clara
    License

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

    Area covered
    Description

    Feature class derived from Tiger line shapefile of 2010 census tracts for Santa Clara County and geographic identifier table, G001. Some attribute names may be when exporting as shapefile due to 10 character limitation of shapefile attribute names. Urban tracts designation is based upon whether 100 percent of 2010 population for a census tract has a census block attribute of “URBAN_RURAL” equal to “U” per DEC10_SF1_G001 census block table. A consequence of this criteria is that urban census tracts will be coincident geographically with a similar designation of urban census blockgroups.

  11. a

    DEC10 ZCTA SCC Intersect

    • hub.arcgis.com
    Updated Jun 15, 2016
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    County of Santa Clara (2016). DEC10 ZCTA SCC Intersect [Dataset]. https://hub.arcgis.com/maps/sccgov::dec10-zcta-scc-intersect
    Explore at:
    Dataset updated
    Jun 15, 2016
    Dataset authored and provided by
    County of Santa Clara
    License

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

    Area covered
    Description

    Feature class derived from Tiger line shapefile of 2010 census ZCTA for Santa Clara County and geographic identifier table, G001. Some attribute names may be truncated when exporting as shapefile due to 10 character limitation of shapefile attribute names. ZCTA's that are partially within Santa Clara County have been included in this dataset.

  12. a

    DEC10 BLOCKGROUP URBAN SCC

    • hub.arcgis.com
    Updated Jun 14, 2016
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    County of Santa Clara (2016). DEC10 BLOCKGROUP URBAN SCC [Dataset]. https://hub.arcgis.com/maps/sccgov::dec10-blockgroup-urban-scc
    Explore at:
    Dataset updated
    Jun 14, 2016
    Dataset authored and provided by
    County of Santa Clara
    License

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

    Area covered
    Description

    Feature class derived from Tiger line shapefile of 2010 census blockgroups for Santa Clara County and geographic identifier table, G001. Some attribute names may be when exporting as shapefile due to 10 character limitation of shapefile attribute names. Urban blockgroups designation is based upon whether 100 percent of 2010 population for a blockgroup’s related census tract has a census block attribute of “URBAN_RURAL” equal to “U” per DEC10_SF1_G001 census block table. A consequence of this criteria is that urban census blockgroups will be coincident geographically with a similar designation of urban census tracts.

  13. Not seeing a result you expected?
    Learn how you can add new datasets to our index.

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CA Governor's Office of Emergency Services (2020). USA Flood Hazard Areas [Dataset]. https://wifire-data.sdsc.edu/dataset/usa-flood-hazard-areas

USA Flood Hazard Areas

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6 scholarly articles cite this dataset (View in Google Scholar)
geojson, esri rest, csv, zip, kml, htmlAvailable download formats
Dataset updated
Jul 14, 2020
Dataset provided by
CA Governor's Office of Emergency Services
License

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

Area covered
United States
Description
The Federal Emergency Management Agency (FEMA) produces Flood Insurance Rate maps and identifies Special Flood Hazard Areas as part of the National Flood Insurance Program's floodplain management. Special Flood Hazard Areas have regulations that include the mandatory purchase of flood insurance.

Dataset Summary

Phenomenon Mapped: Flood Hazard Areas
Coordinate System: Web Mercator Auxiliary Sphere
Extent: 50 United States plus Puerto Rico, the US Virgin Islands, Guam, the Northern Mariana Islands and American Samoa
Visible Scale: The layer is limited to scales of 1:1,000,000 and larger. Use the USA Flood Hazard Areas imagery layer for smaller scales.
Publication Date: April 1, 2019

This layer is derived from the April 1, 2019 version of the National Flood Hazard Layer feature class S_Fld_Haz_Ar. The data were aggregated into eight classes to produce the Esri Symbology field based on symbology provided by FEMA. All other layer attributes are derived from the National Flood Hazard Layer. The layer was projected to Web Mercator Auxiliary Sphere and the resolution set to 1 meter.

To improve performance Flood Zone values "Area Not Included", "Open Water", "D", "NP", and No Data were removed from the layer. Areas with Flood Zone value "X" subtype "Area of Minimal Flood Hazard" were also removed. An imagery layer created from this dataset provides access to the full set of records in the National Flood Hazard Layer.

A web map featuring this layer is available for you to use.

What can you do with this Feature Layer?

Feature layers work throughout the ArcGIS system. Generally your work flow with feature layers will begin in ArcGIS Online or ArcGIS Pro. Below are just a few of the things you can do with a feature service in Online and Pro.

ArcGIS Online
  • Add this layer to a map in the map viewer. The layer is limited to scales of approximately 1:1,000,000 or larger but an imagery layer created from the same data can be used at smaller scales to produce a webmap that displays across the full range of scales. The layer or a map containing it can be used in an application.
  • Change the layer’s transparency and set its visibility range
  • Open the layer’s attribute table and make selections and apply filters. Selections made in the map or table are reflected in the other. Center on selection allows you to zoom to features selected in the map or table and show selected records allows you to view the selected records in the table.
  • Change the layer’s style and filter the data. For example, you could change the symbology field to Special Flood Hazard Area and set a filter for = “T” to create a map of only the special flood hazard areas.
  • Add labels and set their properties
  • Customize the pop-up
ArcGIS Pro
  • Add this layer to a 2d or 3d map. The same scale limit as Online applies in Pro
  • Use as an input to geoprocessing. For example, copy features allows you to select then export portions of the data to a new feature class. Areas up to 1,000-2,000 features can be exported successfully.
  • Change the symbology and the attribute field used to symbolize the data
  • Open table and make interactive selections with the map
  • Modify the pop-ups
  • Apply Definition Queries to create sub-sets of the layer
This layer is part of the Living Atlas of the World that provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics.
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