Name: FEMA Floodplain

Display Field: FLD_AR_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: A one-hundred-year flood is a flood event that has a 1% probability of occurring in any given year. The 100-year flood is also referred to as the 1% flood, since its annual exceedance probability is 1%,[1] or as having a return period of 100-years. The 100-year flood is generally expressed as a flowrate. Based on the expected 100-year flood flow rate in a given creek, river or surface water system, the flood water level can be mapped as an area of inundation. The resulting floodplain map is referred to as the 100-year floodplain, which may figure very importantly in building permits, environmental regulations, and flood insurance. Flood hazard areas identified on the Flood Insurance Rate Map are identified as a Special Flood Hazard Area (SFHA). SFHA are defined as the area that will be inundated by the flood event having a 1-percent chance of being equaled or exceeded in any given year. The 1-percent annual chance flood is also referred to as the base flood or 100-year flood.

Copyright Text:

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

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Supports Statistics: true

Has Labels: false

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Spatial Reference: 102719  (2264)

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Supports Percentile Statistics: true
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Has Attachments: false

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Type ID Field: null

Fields:

• OBJECTID_1 ( type: esriFieldTypeOID, alias: OBJECTID_1 )
• OBJECTID ( type: esriFieldTypeInteger, alias: OBJECTID )
• FLD_AR_ID ( type: esriFieldTypeString, alias: FLD_AR_ID, length: 25 )
• HYDROID ( type: esriFieldTypeString, alias: HYDROID, length: 25 )
• ZONE_LID ( type: esriFieldTypeString, alias: ZONE_LID, length: 5 )
• FLDWAY_LID ( type: esriFieldTypeString, alias: FLDWAY_LID, length: 5 )
• SFHA_TF ( type: esriFieldTypeSmallInteger, alias: SFHA_TF )
• V_DATM_LID ( type: esriFieldTypeString, alias: V_DATM_LID, length: 5 )
• LEN_LID ( type: esriFieldTypeString, alias: LEN_LID, length: 5 )
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• AR_REVERT ( type: esriFieldTypeString, alias: AR_REVERT, length: 6 )
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• VELOCITY ( type: esriFieldTypeDouble, alias: VELOCITY )
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Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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