nwm/ana_inundation_extent (FeatureServer)

View In: ArcGIS JavaScript ArcGIS Online Map Viewer

Service Description: *****THIS IS AN EXPERIMENTAL SERVICE***** This experimental map represents the National Weather Service's best approximation of inundation extent based upon modeled river discharge. The map depicts the inundation extent of the National Water Model (NWM) streamflow forecast where the NWM is signaling high water. This service is derived from the analysis and assimilation configuration of the NWM for an area that includes 30% of the U.S. population but will be expanded later as described in the Story Map below. https://storymaps.arcgis.com/stories/c7ae8422207241b5873fff38a22cf66b High water thresholds (regionally varied) and Annual Exceedance Probabilities (AEPs) are derived using the 40-year NWM reanalysis simulation which is available via the NOAA Open Data Dissemination Program (NODD). Forecast inundation extents do not fully capture coastal processes. The service below depicts the boundary of this coastal area. Updated hourly. Also depicted is the magnitude of the National Water Model (NWM) streamflow forecast where the NWM is signaling high water. This service is derived from the analysis and assimilation configuration of the NWM over Contiguous U.S. Shown are reaches with flow at or above high water thresholds. Reaches are colored by the annual exceedance probability (AEP) of their current flow. High water thresholds (regionally varied) and AEPs were derived using the 40-year NWM v3.0 reanalysis simulation. Updated hourly. Link to graphical web page: https://www.weather.gov/owp/operations Link to documentation: https://www.weather.gov/media/owp/operations/Public_Handbook_V2.3_%20NWC_Visualization_Services.pdf For feedback or questions please email nwps.webmaster@noaa.gov

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Has Versioned Data: false

MaxRecordCount: 2000

Supported Query Formats: JSON

Supports Query Data Elements: true

Layers:

Description: *****THIS IS AN EXPERIMENTAL SERVICE***** This experimental map represents the National Weather Service's best approximation of inundation extent based upon modeled river discharge. The map depicts the inundation extent of the National Water Model (NWM) streamflow forecast where the NWM is signaling high water. This service is derived from the analysis and assimilation configuration of the NWM for an area that includes 30% of the U.S. population but will be expanded later as described in the Story Map below. https://storymaps.arcgis.com/stories/c7ae8422207241b5873fff38a22cf66b High water thresholds (regionally varied) and Annual Exceedance Probabilities (AEPs) are derived using the 40-year NWM reanalysis simulation which is available via the NOAA Open Data Dissemination Program (NODD). Forecast inundation extents do not fully capture coastal processes. The service below depicts the boundary of this coastal area. Updated hourly. Also depicted is the magnitude of the National Water Model (NWM) streamflow forecast where the NWM is signaling high water. This service is derived from the analysis and assimilation configuration of the NWM over Contiguous U.S. Shown are reaches with flow at or above high water thresholds. Reaches are colored by the annual exceedance probability (AEP) of their current flow. High water thresholds (regionally varied) and AEPs were derived using the 40-year NWM v3.0 reanalysis simulation. Updated hourly. Link to graphical web page: https://www.weather.gov/owp/operations Link to documentation: https://www.weather.gov/media/owp/operations/Public_Handbook_V2.3_%20NWC_Visualization_Services.pdf For feedback or questions please email nwps.webmaster@noaa.gov

Service Item Id: fb8cb6186c014e3f9a890f689751da71

Copyright Text: National Water Model, NOAA/NWS National Water Center

Spatial Reference: 102100 (3857) LatestVCSWkid(0)

Initial Extent:

Full Extent:

Units: esriMeters

Document Info:

Enable Z Defaults: false

Supports ApplyEdits With Global Ids: false

Support True Curves : true

Only Allow TrueCurve Updates By TrueCurveClients : true

Supports Return Service Edits Option : true

Supports Dynamic Layers: false

Child Resources: Info Query Data Elements Relationships SharedTemplates

Supported Operations: Query Query Contingent Values QueryDomains Append Extract Changes Get Estimates