70 datasets found
  1. Global Earthquake Archive

    • resilience-fema.hub.arcgis.com
    • pacificgeoportal.com
    • +3more
    Updated Dec 16, 2021
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    Esri (2021). Global Earthquake Archive [Dataset]. https://resilience-fema.hub.arcgis.com/datasets/esri2::global-earthquake-archive
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    Dataset updated
    Dec 16, 2021
    Dataset authored and provided by
    Esrihttp://esri.com/
    Area covered
    Description

    The US Geological Survey maintains official records of earthquake activity from around the globe. This layer displays all earthquakes since 1900 with a magnitude 4.0 or greater, and updates once a day. For more recent activity, please see the Recent Earthquakes layer that updates every 5 minutes.

    Data source: original data is accessed here and updated using the OverwriteFS tool in ArcGIS Online. The full documentation for all of the fields can be found on the USGS ComCat site. For more information, please see the USGS PAGER program.RevisionsJune 13, 2022: Updated service with Z Coordinates set to 0 due to limitation on the negative Z value range for online services. This change allows users to support analytics and export for local client consumption. Depth can be leveraged by using the elevation field. Anticipating online enhancements, we set the custom projection to support the change in the Z value range. Refined the schema to improve efficiency. Layer has been Time-Enabled to allow for Time Series display, but disabled by default. Data download has now been enabled.May 5, 2023: Updated service with four duplicated fields to match the Recent Earthquake Service's data schema. Depth, Event Time, Event Type, TZ are the duplicated fields.

    This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency. Always refer to USGS source for official guidance.

  2. Drought and Moisture Surplus for the Conterminous United States, Annual Data...

    • agdatacommons.nal.usda.gov
    • resilience.climate.gov
    • +10more
    bin
    Updated Nov 23, 2024
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    U.S. Forest Service (2024). Drought and Moisture Surplus for the Conterminous United States, Annual Data 5-Year Windows (Image Service) [Dataset]. https://agdatacommons.nal.usda.gov/articles/dataset/Drought_and_Moisture_Surplus_for_the_Conterminous_United_States_Annual_Data_5-Year_Windows_Image_Service_/25973839
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    binAvailable download formats
    Dataset updated
    Nov 23, 2024
    Dataset provided by
    U.S. Department of Agriculture Forest Servicehttp://fs.fed.us/
    Authors
    U.S. Forest Service
    License

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

    Area covered
    Contiguous United States, United States
    Description

    Note: To download this raster dataset, go to ArcGIS Open Data Set and click the download button, and under additional resources select raster download option; the data can also be downloaded directly from the FSGeodata Clearinghouse. To summarize this dataset by U.S. Forest Service Lands, see the Drought Summary Tool. You can also explore cumulative drought and moisture changes from this StoryMap; additional drought products from the Office of Sustainability and Climate are available in our Climate Gallery and the OSC Drought page.The Moisture Deficit and Surplus map uses moisture difference z-score datasets developed by scientists Frank Koch, John Coulston, and William Smith of the Forest Service Southern Research Station. A z-score is a statistical method for assessing how different a value is from the mean (average). Mean moisture values were derived from historical data on precipitation and potential evapotranspiration, from 1900 to 2023. The greater the z-value, the larger the departure from average conditions, indicating larger moisture deficits or surpluses. Thus, the dark red areas on this map indicate a five-year period with extremely dry conditions, relative to the average conditions over the past century. For further reading on the methodology used to build these maps, see the publication here: https://www.fs.usda.gov/treesearch/pubs/43361This record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService For complete information, please visit https://data.gov.

  3. Estimated Subsidence in the San Joaquin Valley between 1949 – 2005

    • data.ca.gov
    • data.cnra.ca.gov
    pdf
    Updated May 1, 2019
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    California Department of Water Resources (2019). Estimated Subsidence in the San Joaquin Valley between 1949 – 2005 [Dataset]. https://data.ca.gov/dataset/estimated-subsidence-in-the-san-joaquin-valley-between-1949-2005
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    pdfAvailable download formats
    Dataset updated
    May 1, 2019
    Dataset authored and provided by
    California Department of Water Resourceshttp://www.water.ca.gov/
    License

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

    Area covered
    San Joaquin Valley
    Description

    San Joaquin Valley Subsidence Analysis README.
    Written: Joel Dudas, 3/12/2017. Amended: Ben Brezing, 4/2/2019. DWR’s Division of Engineering Geodetic Branch received a request in 1/2017 from Jeanine Jones to produce a graphic of historic subsidence in the entirety of the San Joaquin Valley. The task was assigned to the Mapping & Photogrammetry Office and the Geospatial Data Support Section to complete by early February. After reviewing the alternatives, the decision was made to produce contours from the oldest available set of quad maps for which there was reasonable certainty about quality and datum, and to compare that to the most current Valley-wide DEM. For the first requirement, research indicated that the 1950’s vintage quad maps for the Valley were the best alternative. Prior quad map editions are uneven in quality and vintage, and the actual control used for the contour lines was extremely suspect. The 1950’s quads, by contrast, were produced primarily on the basis of 1948-1949 aerial photography, along with control corresponding to that period, and referenced to the National Geodetic Vertical Datum of 1929. For the current set, the most recent Valley-wide dataset that was freely available, in the public domain, and of reasonable accuracy was the 2005 NextMap SAR acquisition (referenced to NAVD88). The primary bulk of the work focused on digitizing the 1950’s contours. First, all of the necessary quads were downloaded from the online USGS quad source https://ngmdb.usgs.gov/maps/Topoview/viewer/#4/41.13/-107.51. Then the entire staff of the Mapping & Photogrammetry Lab (including both the Mapping Office and GDDS staff) proceeded to digitize the contours. Given the short turnaround time constraint and limited budget, certain shortcuts occurred in contour development. While efforts were made to digitize accurately, speed really was important. Contours were primarily focused only on agricultural and other lowland areas, and so highlands were by and large skipped. The tight details of contours along rivers, levees, and hillsides was skipped and/or simplified. In some cases, only major contours were digitized. The mapping on the source quads itself varied….in a few cases on spot elevations on benchmarks were available in quads. The contour interval sometimes varied, even within the quad sheet itself. In addition, because 8 different people were creating the contours, variability exists in the style and attention to detail. It should be understood that given the purpose of the project (display regional subsidence patterns), that literal and precise development of the historic contour sets leaves some things to be desired. These caveats being said, the linework is reasonably accurate for what it is (particularly given that the contours of that era themselves were mapped at an unknown and varying actual quality). The digitizers tagged the lines with Z values manually entered after linework that corresponded to the mapped elevation contours. Joel Dudas then did what could be called a “rough” QA/QC of the contours. The individual lines were stitched together into a single contour set, and exported to an elevation raster (using TopoToRaster in ArcGIS 10.4). Gross blunders in Z values were corrected. Gaps in the coverage were filled. The elevation grid was then adjusted to NAVD88 using a single adjustment for the entire coverage area (2.5’, which is a pretty close average of values in this region). The NextMap data was extracted for the area, and converted into feet. The two raster sets were fixed to the same origin point. The subsidence grid was then created by subtracting the old contour-derived grid from the NextMAP DEM. The subsidence grid that includes all of the values has the suffix “ALL”. Then, to improve the display fidelity, some of the extreme values (above +5’ and below -20’*) were filtered out of the dataset, and the subsidence grid was regenerated for these areas and suffixed with “cut.” The purpose of this cut was to extract some of the riverine and hilly areas that produced more extreme values and other artifacts purely due to the analysis approach (i.e. not actual real elevation change). * - some of the areas with more than 20 feet of subsidence were omitted from this clipping, because they were in heavily subsided areas and may be “real subsidence.”The resulting subsidence product should be perceived in light of the above. Some of the collar of the San Joaquin Valley shows large changes, but that is simply due to the analysis method. Also, individual grid cells may or may not be comparing the same real features. Errors are baked into both comparison datasets. However, it is important to note that the large areas of subsidence in the primary agriculture area agree fairly well with a cruder USGS subsidence map of the Valley based on extensometer data. We have confidence that the big picture story these results show us is largely correct, and that the magnitudes of subsidence are somewhat reasonable. The contour set can serve as the baseline to support future comparisons using more recent or future data as it becomes available. It should be noted there are two key versions of the data. The “Final Deliverables” from 2/2017 were delivered to support the initial Public Affairs press release. Subsequent improvements were made in coverage and blunder correction as time permitted (it should be noted this occurred in the midst of the Oroville Dam emergency) to produce the final as of 3/12/2017. Further improvements in overall quality and filtering could occur in the future if time and needs demand it.
    Update (4/3/2019, Ben Brezing): The raster was further smoothed to remove artifacts that result from comparing the high resolution NextMAP DEM to the lower resolution DEM that was derived from the 1950’s quad map contours. The smoothing was accomplished by removing raster cells with values that are more than 0.5 feet different than adjacent cells (25 meter cell size), as well as the adjacent cells. The resulting raster was then resampled to a raster with 100 meter cell size using cubic resampling technique and was then converted to a point feature class. The point feature class was then interpolated to a raster with 250 meter cell size using the IDW technique, a fixed search radius of 1250 meters and power=2. The resulting raster was clipped to a smaller extent to remove noisier areas around the edges of the Central Valley while retaining coverage for the main area of interest.

  4. Drought and Moisture Surplus for the Conterminous United States, Annual Data...

    • catalog.data.gov
    • agdatacommons.nal.usda.gov
    • +8more
    Updated Apr 21, 2025
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    U.S. Forest Service (2025). Drought and Moisture Surplus for the Conterminous United States, Annual Data 1-Year Windows (Image Service) [Dataset]. https://catalog.data.gov/dataset/drought-and-moisture-surplus-for-the-conterminous-united-states-annual-data-1-year-windows-6243b
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    Dataset updated
    Apr 21, 2025
    Dataset provided by
    U.S. Department of Agriculture Forest Servicehttp://fs.fed.us/
    Area covered
    Contiguous United States, United States
    Description

    Note: To download this raster dataset, go to ArcGIS Open Data Set and click the download button, and under additional resources select raster download option; the data can also be downloaded directly from the FSGeodata Clearinghouse. To summarize this dataset by U.S. Forest Service Lands, see the Drought Summary Tool. You can also explore cumulative drought and moisture changes from this StoryMap; additional drought products from the Office of Sustainability and Climate are available in our Climate Gallery and the OSC Drought page.The Moisture Deficit and Surplus map uses moisture difference z-score datasets developed by scientists Frank Koch, John Coulston, and William Smith of the Forest Service Southern Research Station. A z-score is a statistical method for assessing how different a value is from the mean (average). Mean moisture values were derived from historical data on precipitation and potential evapotranspiration, from 1900 to 2023. The greater the z-value, the larger the departure from average conditions, indicating larger moisture deficits or surpluses. Thus, the dark red areas on this map indicate a one-year period with extremely dry conditions, relative to the average conditions over the past century. For further reading on the methodology used to build these maps, see the publication here: https://www.fs.usda.gov/treesearch/pubs/43361

  5. Productivity of U.S. Rangelands, Annual Data Z-scores

    • catalog.data.gov
    • usfs-test-dcdev.hub.arcgis.com
    Updated Jul 11, 2025
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    U.S. Forest Service (2025). Productivity of U.S. Rangelands, Annual Data Z-scores [Dataset]. https://catalog.data.gov/dataset/productivity-of-u-s-rangelands-annual-data-z-scores-image-service-ee463
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    Dataset updated
    Jul 11, 2025
    Dataset provided by
    U.S. Department of Agriculture Forest Servicehttp://fs.fed.us/
    Area covered
    United States
    Description

    Note: To download this raster dataset, go to ArcGIS Open Data Set and click the download button, and under additional resources select any of the download options. Data can also be downloaded from the FSGeodata Clearinghouse.More information about rangeland productivity and the effects of drought are available in this StoryMap; additional drought and rangeland products from the Office of Sustainability and Climate are available in our Climate Gallery.Time enabled image service showing estimates of annual production of rangeland vegetation.Production data were generated using the Normalized Difference Vegetation Index (NDVI) from the Thematic Mapper Suite from 1984 to 2021 at 250 m resolution. The NDVI is converted to production estimates using two regression formulas depending on the level of the NDVI; there is one equation for lower values (and thus lower production values) and one for higher values. This raster dataset yields estimates of annual production of rangeland vegetation and should be useful for understanding trends and variability in forage resources. These results were then converted to Z-scores for easier comparison of annual relative productivity in coterminous U.S. rangelands, and for rapid display in online time-enabled applications. This Z-scores dataset as well as the raw lbs/acre data that the Z-scores were derived from can be downloaded from: https://data.fs.usda.gov/geodata/rastergateway/rangelands/index.phpMore information about rangeland productivity and the effects of drought are available in this story map.

  6. a

    Two Foot Topographic Contours - Lamprey River (0106000307) - smoothed

    • hub.arcgis.com
    • nhgeodata.unh.edu
    • +2more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Lamprey River (0106000307) - smoothed [Dataset]. https://hub.arcgis.com/maps/NHGRANIT::two-foot-topographic-contours-lamprey-river-0106000307-smoothed
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Lamprey River (0106000307) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  7. u

    Two Foot Topographic Contours - Nashua (01070004) - smoothed

    • nhgeodata.unh.edu
    • granit.unh.edu
    • +2more
    Updated Oct 1, 2019
    + more versions
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Nashua (01070004) - smoothed [Dataset]. https://www.nhgeodata.unh.edu/maps/ff4b7339e1d8436480b6f821e381da4e
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Nashua (01070004) 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.

  8. a

    Two Foot Topographic Contours - Squannacook River (0107000403) - smoothed

    • hub.arcgis.com
    • nhgeodata.unh.edu
    • +2more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Squannacook River (0107000403) - smoothed [Dataset]. https://hub.arcgis.com/datasets/4d00071b20b3425fb3c7f8402a38bd72
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Squannacook River (0107000403) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  9. Drought and Moisture Surplus for the Conterminous United States, Annual Data...

    • data-usfs.hub.arcgis.com
    • agdatacommons.nal.usda.gov
    • +12more
    Updated Oct 17, 2019
    + more versions
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    U.S. Forest Service (2019). Drought and Moisture Surplus for the Conterminous United States, Annual Data 3-Year Windows (Image Service) [Dataset]. https://data-usfs.hub.arcgis.com/datasets/usfs::drought-and-moisture-surplus-for-the-conterminous-united-states-annual-data-3-year-windows-image-service
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    Dataset updated
    Oct 17, 2019
    Dataset provided by
    U.S. Department of Agriculture Forest Servicehttp://fs.fed.us/
    Authors
    U.S. Forest Service
    License

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

    Area covered
    Description

    Note: To download this raster dataset, go to ArcGIS Open Data Set and click the download button, and under additional resources select raster download option; the data can also be downloaded directly from the FSGeodata Clearinghouse. To summarize this dataset by U.S. Forest Service Lands, see the Drought Summary Tool. You can also explore cumulative drought and moisture changes from this StoryMap; additional drought products from the Office of Sustainability and Climate are available in our Climate Gallery and the OSC Drought page.The Moisture Deficit and Surplus map uses moisture difference z-score datasets developed by scientists Frank Koch, John Coulston, and William Smith of the Forest Service Southern Research Station. A z-score is a statistical method for assessing how different a value is from the mean (average). Mean moisture values were derived from historical data on precipitation and potential evapotranspiration, from 1900 to 2023. The greater the z-value, the larger the departure from average conditions, indicating larger moisture deficits or surpluses. Thus, the dark red areas on this map indicate a three-year period with extremely dry conditions, relative to the average conditions over the past century. For further reading on the methodology used to build these maps, see the publication here: https://www.fs.usda.gov/treesearch/pubs/43361

  10. a

    Two Foot Topographic Contours - The Branch (0108020102) - smoothed

    • hub.arcgis.com
    • granit.unh.edu
    • +2more
    Updated Nov 19, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - The Branch (0108020102) - smoothed [Dataset]. https://hub.arcgis.com/datasets/8b3c6a33fecd4994a61af5074cc1a1cc
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    Dataset updated
    Nov 19, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the The Branch (0108020102) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  11. u

    Two Foot Topographic Contours - Newfound River (0107000106) - smoothed

    • granit.unh.edu
    • nhgeodata.unh.edu
    • +3more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Newfound River (0107000106) - smoothed [Dataset]. https://granit.unh.edu/datasets/5cfac7fec1ad453a8b793464a0bd8243
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Newfound River (0107000106) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  12. u

    Two Foot Topographic Contours - Lower Androscoggin (01040002) - smoothed

    • nhgeodata.unh.edu
    • granit.unh.edu
    • +2more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Lower Androscoggin (01040002) - smoothed [Dataset]. https://www.nhgeodata.unh.edu/maps/c4ee0203bda9460e89759d2148f2f5ea
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    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.

  13. u

    Two Foot Topographic Contours - Johns River (0108010301) - smoothed

    • nhgeodata.unh.edu
    • hub.arcgis.com
    • +2more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Johns River (0108010301) - smoothed [Dataset]. https://www.nhgeodata.unh.edu/datasets/two-foot-topographic-contours-johns-river-0108010301-smoothed
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Johns River (0108010301) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  14. a

    Two Foot Topographic Contours - Lower Ammonoosuc River (0108010305) -...

    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    • nhgeodata.unh.edu
    • +2more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Lower Ammonoosuc River (0108010305) - smoothed [Dataset]. https://arc-gis-hub-home-arcgishub.hub.arcgis.com/datasets/194c500e601247c69d411892239435b2_6/explore
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Lower Ammonoosuc River (0108010305) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  15. u

    Two Foot Topographic Contours - Stony Brook-Merrimack River (0107000612) -...

    • granit.unh.edu
    • hub.arcgis.com
    • +1more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Stony Brook-Merrimack River (0107000612) - smoothed [Dataset]. https://granit.unh.edu/maps/NHGRANIT::two-foot-topographic-contours-stony-brook-merrimack-river-0107000612-smoothed
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Stony Brook-Merrimack River (0107000612) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  16. a

    Two Foot Topographic Contours - Swans Falls-Saco River (0106000203) -...

    • new-hampshire-geodata-portal-1-nhgranit.hub.arcgis.com
    • nhgeodata.unh.edu
    • +2more
    Updated Oct 1, 2019
    + more versions
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Swans Falls-Saco River (0106000203) - smoothed [Dataset]. https://new-hampshire-geodata-portal-1-nhgranit.hub.arcgis.com/datasets/two-foot-topographic-contours-swans-falls-saco-river-0106000203-smoothed/explore
    Explore at:
    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Swans Falls-Saco River (0106000203) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  17. u

    Two Foot Topographic Contours - Lake Winnipesaukee (0107000201) - smoothed

    • nhgeodata.unh.edu
    • hub.arcgis.com
    • +1more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Lake Winnipesaukee (0107000201) - smoothed [Dataset]. https://www.nhgeodata.unh.edu/datasets/two-foot-topographic-contours-lake-winnipesaukee-0107000201-smoothed
    Explore at:
    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Lake Winnipesaukee (0107000201) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  18. u

    HUC 10 Watershed Boundaries

    • nhgeodata.unh.edu
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). HUC 10 Watershed Boundaries [Dataset]. https://www.nhgeodata.unh.edu/datasets/huc-10-watershed-boundaries
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    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    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.

  19. u

    Two Foot Topographic Contours - Little Ossipee River (0106000210) - smoothed...

    • granit.unh.edu
    • nhgeodata.unh.edu
    • +3more
    Updated Oct 1, 2019
    + more versions
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Little Ossipee River (0106000210) - smoothed [Dataset]. https://granit.unh.edu/maps/NHGRANIT::two-foot-topographic-contours-little-ossipee-river-0106000210-smoothed
    Explore at:
    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Little Ossipee River (0106000210) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

  20. u

    Two Foot Topographic Contours - Upper Ammonoosuc River (0108010107) -...

    • nhgeodata.unh.edu
    • granit.unh.edu
    • +2more
    Updated Oct 1, 2019
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    New Hampshire GRANIT GIS Clearinghouse (2019). Two Foot Topographic Contours - Upper Ammonoosuc River (0108010107) - smoothed [Dataset]. https://www.nhgeodata.unh.edu/datasets/two-foot-topographic-contours-upper-ammonoosuc-river-0108010107-smoothed/api
    Explore at:
    Dataset updated
    Oct 1, 2019
    Dataset authored and provided by
    New Hampshire GRANIT GIS Clearinghouse
    Area covered
    Description

    This data set represents smoothed, 2-foot bare earth contours (isolines) for the Upper Ammonoosuc River (0108010107) HUC 10 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. Note on HUC 01060000310: Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state. These were left in the data so that users can determine what further processing best meets their application needs.

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Esri (2021). Global Earthquake Archive [Dataset]. https://resilience-fema.hub.arcgis.com/datasets/esri2::global-earthquake-archive
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Global Earthquake Archive

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6 scholarly articles cite this dataset (View in Google Scholar)
Dataset updated
Dec 16, 2021
Dataset authored and provided by
Esrihttp://esri.com/
Area covered
Description

The US Geological Survey maintains official records of earthquake activity from around the globe. This layer displays all earthquakes since 1900 with a magnitude 4.0 or greater, and updates once a day. For more recent activity, please see the Recent Earthquakes layer that updates every 5 minutes.

Data source: original data is accessed here and updated using the OverwriteFS tool in ArcGIS Online. The full documentation for all of the fields can be found on the USGS ComCat site. For more information, please see the USGS PAGER program.RevisionsJune 13, 2022: Updated service with Z Coordinates set to 0 due to limitation on the negative Z value range for online services. This change allows users to support analytics and export for local client consumption. Depth can be leveraged by using the elevation field. Anticipating online enhancements, we set the custom projection to support the change in the Z value range. Refined the schema to improve efficiency. Layer has been Time-Enabled to allow for Time Series display, but disabled by default. Data download has now been enabled.May 5, 2023: Updated service with four duplicated fields to match the Recent Earthquake Service's data schema. Depth, Event Time, Event Type, TZ are the duplicated fields.

This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency. Always refer to USGS source for official guidance.

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