Name: Fema Flood Zones

Display Field: DFIRM_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: All types of Zone A [i.e. Zone AE, AO, AH, etc.] have a mandatory flood insurance requirement for all those within the floodplain that have federally-backed loans. A- Approximate 1%-annual chance floodplain. No base flood elevations [BFE]AE, without floodway - 1%-annual chance floodplain based on a detailed study. Base flood elevations are provided and can be found on the Flood Insurance Rate Map [FIRM] and the Flood Insurance Study [FIS] profiles.AE, with floodway- Same as AE but the floodplain is separated into two regions: floodplain fringe and floodway. Development is allowed within a 1%-annual chance floodplain but new development creates obstruction to flood flows that raise the water surface elevation. To limit this surcharge to 1.0-foot, a “floodway” is designated which restricts development to only the areas outside of the floodway.AO- Areas of shallow 1%-annual chance flooding [1 to 3 feet depth]. This is a detailed floodplain depicting sheet flow on sloping terrain. Instead of a base flood elevation, average depths within the floodplain as shown on the Flood Insurance Rate Map. For areas of alluvial fan flooding, velocities are also provided.AH-Areas of shallow 1%-annual chance flooding [1 to 3 feet depth]. This is a detailed floodplain depicting areas of ponding. Base flood elevations are provided on the Flood Insurance Rate Map. Flood insurance is available in any zone but rates differ. In Zone X, a Preferred Risk Policy can be purchased at rates as low as $129 per year. In A zones, flood insurance rates for structures below the BFE, may be as high as $5000 per year.Shaded X- Represents 1 of 3 things:-0.2%-annual chance floodplain-1%-annual chance floodplain with average depth < 1 foot or having a drainage area less than 1 square mile-Areas protected by levees from the 1%-annual chance floodUnshaded X- Areas outside of 0.2%-annual chance floodplainWhen FEMA originally produced the FIRMs, they focused on areas that were developed or developing. This explains why the majority of eastern Riverside County is Zone D.D- Areas that have not been studied by FEMA. Flood hazards are undetermined but possible. Previous Zone Designations:A1-30: Replaced with Zone AE# next to the “A” = flood hazard factorB: Replaced with Shaded X C: Replace with Unshaded X

Definition Expression: N/A

Copyright Text: FEMA

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Extent:

XMin: -1.3100050303863205E7
YMin: 3950269.7942913203
XMax: -1.2738723426167324E7
YMax: 4041269.301738772
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: FLD_ZONE
Field 2: null
Field 3: null
Field Delimiter: ;
Default Symbol:
N/A
Default Label: null
UniqueValueInfos:
• Value: AE, COLORADO
  Label: 100 Year Flood Event
  Description:
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• Value: AE, FLOODWAY
  Label: 100 Year Flood Event
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• Value: A
  Label: 100 Year Flood Event
  Description:
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• Value: AE
  Label: 100 Year Flood Event
  Description:
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• Value: AH
  Label: 100 Year Flood Event
  Description:
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• Value: AO
  Label: 100 Year Flood Event
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• Value: SHADED X
  Label: 500 Year Flood Event
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• Value: 0.2 PCT ANNUAL CHANCE FLOOD HAZARD
  Label: 500 Year Flood Event
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Labeling Info:

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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeDouble , alias: OBJECTID )
• DFIRM_ID ( type: esriFieldTypeString , alias: DFIRM_ID , length: 15 )
• FLD_AR_ID ( type: esriFieldTypeString , alias: FLD_AR_ID , length: 21 )
• FLD_ZONE ( type: esriFieldTypeString , alias: FLD_ZONE , length: 55 )
• FLOODWAY ( type: esriFieldTypeString , alias: FLOODWAY , length: 30 )
• SFHA_TF ( type: esriFieldTypeString , alias: SFHA_TF , length: 1 )
• STATIC_BFE ( type: esriFieldTypeDouble , alias: STATIC_BFE )
• V_DATUM ( type: esriFieldTypeString , alias: V_DATUM , length: 6 )
• DEPTH ( type: esriFieldTypeDouble , alias: DEPTH )
• LEN_UNIT ( type: esriFieldTypeString , alias: LEN_UNIT , length: 20 )
• VELOCITY ( type: esriFieldTypeDouble , alias: VELOCITY )
• VEL_UNIT ( type: esriFieldTypeString , alias: VEL_UNIT , length: 20 )
• AR_REVERT ( type: esriFieldTypeString , alias: AR_REVERT , length: 6 )
• BFE_REVERT ( type: esriFieldTypeDouble , alias: BFE_REVERT )
• DEP_REVERT ( type: esriFieldTypeDouble , alias: DEP_REVERT )
• SOURCE_CIT ( type: esriFieldTypeString , alias: SOURCE_CIT , length: 21 )
• HYDRO_ID ( type: esriFieldTypeString , alias: HYDRO_ID , length: 21 )
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• GEOMETRY_Area ( type: esriFieldTypeDouble , alias: GEOMETRY_Area )

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