nwm/ana_inundation_extent_ak (FeatureServer)

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Service Description: The map depicts the inundation extent of the National Water Model (NWM) streamflow forecast for Alaska where the NWM is signaling high water. Shown are sections of river with flow at or above a predetermined high water threshold as depicted in the High Flow Magnitude - Alaska service. 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. 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 for Alaska. 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 43-year NWM v3 reanalysis simulation. Updated hourly. 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: false

Layers:

Description: The map depicts the inundation extent of the National Water Model (NWM) streamflow forecast for Alaska where the NWM is signaling high water. Shown are sections of river with flow at or above a predetermined high water threshold as depicted in the High Flow Magnitude - Alaska service. 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. 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 for Alaska. 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 43-year NWM v3 reanalysis simulation. Updated hourly. For feedback or questions please email nwps.webmaster@noaa.gov

Service Item Id: 53f2f89df99b4fcebfea6b035443fbf8

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