View In:   ArcGIS Online Map Viewer

Name: Debris Flow Probability per 100 Years

Display Field: Tributary_Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This dataset represents 740 tributary watersheds to the Colorado River in Grand Canyon with associated debris flow probabilities from 2004. It also includes tributary watersheds to Glen Canyon and several smaller watersheds in Grand Canyon where debris flow data is currently unavailable. Historic probabilities of debris flow occurrence were estimated by modeling the known frequency distribution with drainage basin parameters observed to control the process by which debris flows initiate and travel to the river. Observations from 1984 through 2003 provide a 20 year record of all debris flows that reached the Colorado River in Grand Canyon, and repeat photography provides a 100 year record of debris flows from 147 tributaries. Owing to the limitations of the initial datasets and the focus on geomorphic change in the river corridor, debris flow probabilities pertain only to debris flows that reach the Colorado River.

Copyright Text: Byerley, E.B and Gushue, T.M., We revived this 20 year old dataset by joining Griffiths and others (2004) debris flow probability table with a feature class representing watershed boundaries of ungaged tributaries to the Colorado River in Grand Canyon.

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Supports Datum Transformation: true

Extent:

XMin: 26575.374400000088
YMin: 502860.2993000001
XMax: 256405.31659999955
YMax: 665287.1538999993
Spatial Reference: 102988  (6404)

Drawing Info:

Renderer:
Class Breaks Renderer:
Field: DF_Prob
Min. Value: 2.239347416600094E-5
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Transparency: 38
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
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

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

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• trib_id ( type: esriFieldTypeDouble, alias: Trib_ID, editable: true, nullable: true, defaultValue: null, modelName: Trib_ID )
• gis_area_km2 ( type: esriFieldTypeDouble, alias: Area_KM2, editable: true, nullable: true, defaultValue: null, modelName: gis_area_km2 )
• df_prob ( type: esriFieldTypeDouble, alias: DF Probability, editable: true, nullable: true, defaultValue: null, modelName: df_prob )
• riverside ( type: esriFieldTypeString, alias: RiverSide, editable: true, nullable: true, length: 3, defaultValue: null, modelName: riverside )
• tributary_name ( type: esriFieldTypeString, alias: Tributary_Name, editable: true, nullable: true, length: 50, defaultValue: null, modelName: tributary_name )
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• debrisfanunit_percent ( type: esriFieldTypeDouble, alias: DebrisFanUnit_Percent, editable: true, nullable: true, defaultValue: null, modelName: debrisfanunit_percent )
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• incident_name ( type: esriFieldTypeString, alias: incident_name, editable: true, nullable: true, length: 25, defaultValue: null, modelName: incident_name )

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Capabilities: Query,Sync,Extract,ChangeTracking

Sync Can Return Changes: true

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: true

Supports Query With Historic Moment: true

Supports Coordinates Quantization: true

Supported Operations:   Query   Query Attachments   Query Analytic   Calculate   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata