Name: SB3 Flash Flood Risk Areas - Hazard Inputs PreNorm

Display Field: FFRA_Grid

Type: Table

Geometry Type: N/A

Description: FFRA_Grid: This is a foreign key that relates to the Unique_ID field in the FFRA_Grid table. Distance_to_Drainage_preNorm: Represents proximity to streams or rivers.Slope_Radians_preNorm: Controls runoff velocity and flow direction and a strong predictor of flash flood intensity in steep basins.Flashiness_preNorm: Represents the flashy nature of landscape.Hand_preNorm: Represents local hydraulic position relative to drainage network.Drainage_Density_preNorm: Represents the local concentration of stream channels per unit area.Rainfall_preNorm: Represents 100-yr, 24-hr precipitation depths.Flow Accumulation_preNorm: Identifies concentrated flow paths and potential channel initiation zones.Plan Curvature_preNorm: Represents flow convergence and divergence zones by computing curvature perpendicular to slope direction.TWI_preNorm: Identifies runoff concentration/saturation zones.Curve_Number_preNorm: Represents spatial runoff potential.TPI_preNorm: Distinguishes ridge/valley and channel confinement and helps locate flash-flood routing corridors.Profile Curvature_preNorm: Controls flow acceleration, erosion, and deposition potential by computing curvature along direction of maximum slope.SPI_preNorm: Indicates erosive energy and peak flow hazard.

Service Item Id: 529a2117509d4bf5aa90881ea30d97fa

Copyright Text: This data was generated by WERC, using the United States Geological Survey (USGS) LiDAR 30-meter Digital Elevation Model (DEM), USGS National Land Cover Dataset (NLCD) Land Use / Land Cover (LULC), National Oceanic and Atmospheric Administration (NOAA) Atlas 14 100-year, 24-hour Gridded Precipitation Dataset, and the United States Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Gridded Soil Survey Geographic (gSSURGO) database.

Default Visibility: false

Max Result Window: N/A

Max Record Count: 86516

Standard Max Record Count No Geometry: N/A

Max Record Count Factor: 1

Standard MaxRecord Count: 32000

Tile Max Record Count: 86516

MaxSelectionCount: 0

Supported Query Formats: JSON, PBF

Supports Advanced Queries: true

Supports Statistics: true

Use Standardized Queries: true

Extent:

Drawing Info:

N/A

Feature Draw Order:

N/A

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports Result Pagination Token: false
Supports TrueCurve: false
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Cache Hint: false
Supports Query With Current User: true
Supports Query With Result Type: true

HasZ: false

HasM: false

Has Attachments: false

Has Last Edit Time: false

HTML Popup Type: esriServerHTMLPopupTypeNone

Type ID Field: N/A

Fields:

• OBJECTID ( nullable: false, alias: OBJECTID, type: esriFieldTypeOID )
• FFRA_Grid ( nullable: true, length: 100, alias: FFRA_Grid, type: esriFieldTypeString )
• Distance_to_Drainage_preNorm ( nullable: true, alias: Distance_to_Drainage_preNorm, type: esriFieldTypeDouble )
• Slope_Radians_preNorm ( nullable: true, alias: Slope_Radians_preNorm, type: esriFieldTypeDouble )
• Flashiness_preNorm ( nullable: true, alias: Flashiness_preNorm, type: esriFieldTypeDouble )
• Hand_preNorm ( nullable: true, alias: Hand_preNorm, type: esriFieldTypeDouble )
• Drainage_Density_preNorm ( nullable: true, alias: Drainage_Density_preNorm, type: esriFieldTypeDouble )
• Rainfall_preNorm ( nullable: true, alias: Rainfall_preNorm, type: esriFieldTypeDouble )
• Flow_Accumulation_preNorm ( nullable: true, alias: Flow_Accumulation_preNorm, type: esriFieldTypeDouble )
• Plan_Curvature_preNorm ( nullable: true, alias: Plan_Curvature_preNorm, type: esriFieldTypeDouble )
• TWI_preNorm ( nullable: true, alias: TWI_preNorm, type: esriFieldTypeDouble )
• Curve_Number_preNorm ( nullable: true, alias: Curve_Number_preNorm, type: esriFieldTypeDouble )
• TPI_preNorm ( nullable: true, alias: TPI_preNorm, type: esriFieldTypeDouble )
• Profile_Curvature_preNorm ( nullable: true, alias: Profile_Curvature_preNorm, type: esriFieldTypeDouble )
• SPI_preNorm ( nullable: true, alias: SPI_preNorm, type: esriFieldTypeDouble )

Relationships:

• FFRA_500_Year (19) -- Related To: Provisional Flash Flood Hazard Areas (TWDB 2024 Flood Quilt) (1)
• FFRA_Grid (7) -- Related To: Flash Flood Hazard Analysis Grid (1 Kilometer) (0)

Supported Operations:   Query   Query Attachments   Query Analytic   Query Related Records   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata