View In:   ArcGIS Online Map Viewer

Name: Stream Management Corridors

Display Field: Str_Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Stream Management Corridors (SMCs) are the general corridors needed to allow a stream to function in a way that replicates natural processes to the extent possible. Stream Management Corridors should be considered when developing a site plan at the earliest stages of land planning or planning for a stream restoration project.This SMC dataset is based on a floodplain-based regression analysis. MHFD staff identified SMCs on both the eastern and western sides of the District’s service area where the previous shear stress-based method (released in 2019) produced unrealistic SMC widths. To improve accuracy, MHFD updated these SMCs using the revised floodplain-based approach. Last updated: 6/21/2025This is the first release of stream management corridors following the regression-based approach and should be used in place of the legacy shear stress based stream management corridors.SMCs depicted in dark green were developed using a very high level GIS desktop analysis based on a floodplain-based regression analysis. These are intended to be a starting point for planning purposes only, with refinement occurring through project design in combination with a more detailed science-backed methodology based on current practices.SMCs depicted in light green were developed using a field visit confirmed, peer reviewed, detailed analysis of the stream corridor. This may be fulfilled by a Fluvial Hazard Zone study or other scientifically defensible methods.SMCs are still under development for streams not showing an associated corridor.For more information about stream management corridors and flood hazard zones, visit the Colorado Flood Hazard Zone Mapping Program website.

Service Item Id: 806437f5171c4c018cd0862c54c8f63e

Copyright Text: River Works, MHFD

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: -1.172700264608759E7
YMin: 4776040.445964806
XMax: -1.1625864193652052E7
YMax: 4887999.107139121
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: SMC_Type
Field 2: Scale
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: Avulsion Hazard Zone,Stream Corridor
  Label: Avulsion Hazard Zone,Stream Corridor
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [146, 207, 81, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: Active Stream Corridor,Stream Corridor
  Label: Active Stream Corridor,Stream Corridor
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [146, 207, 81, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: Fluvial Hazard Buffer,Stream Corridor
  Label: Fluvial Hazard Buffer,Stream Corridor
  Description: N/A
  Symbol:
  Style: esriSFSBackwardDiagonal
  Color: [146, 207, 81, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: Active Stream Corridor,Watershed
  Label: Active Stream Corridor,Watershed
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [8, 138, 60, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: Stream Management Corridor,Watershed
  Label: Stream Management Corridor,Watershed
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [8, 138, 60, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
• Value: Fluvial Hazard Buffer,Watershed
  Label: Fluvial Hazard Buffer,Watershed
  Description: N/A
  Symbol:
  Style: esriSFSBackwardDiagonal
  Color: [10, 138, 59, 255]
  Outline:
  Style: esriSLSNull
  Color: [110, 110, 110, 255]
  Width: 0
Transparency: 15
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: true
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: false
Supports Sql Format: false
Supports Query Analytic: false
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: SMC_Type

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, length: 8, defaultValue: null, modelName: OBJECTID )
• Str_Name ( type: esriFieldTypeString, alias: Stream Name, editable: true, nullable: true, length: 100, defaultValue: null, modelName: Str_Name )
• Scale ( type: esriFieldTypeString, alias: Scale, editable: true, nullable: true, length: 50, defaultValue: null, modelName: Scale , Coded Values: [Stream Corridor: Stream Corridor] , [Watershed: Watershed] , [District: District] )
• SMC_Type ( type: esriFieldTypeString, alias: SMC Type, editable: true, nullable: true, length: 255, defaultValue: null, modelName: SMC_Type , Coded Values: [Avulsion Hazard Zone: Avulsion Hazard Zone] , [Active Stream Corridor: Active Stream Corridor] , [Stream Management Corridor: Stream Management Corridor] , ...1 more... )
• SMC_Source ( type: esriFieldTypeString, alias: SMC Source, editable: true, nullable: true, length: 255, defaultValue: null, modelName: SMC_Source )
• SMC_Description ( type: esriFieldTypeString, alias: Description, editable: true, nullable: true, length: 255, defaultValue: null, modelName: SMC_Description )
• SMC_Date ( type: esriFieldTypeDate, alias: SMC Date, editable: true, nullable: true, length: 8, defaultValue: null, modelName: SMC_Date )
• smc_buffer_width_ft ( type: esriFieldTypeDouble, alias: SMC Buffer Width (ft), editable: true, nullable: true, defaultValue: null, modelName: smc_buffer_width_ft )
• drainage_area_sqkm ( type: esriFieldTypeDouble, alias: Drainage Area (sqkm), editable: true, nullable: true, defaultValue: null, modelName: drainage_area_sqkm )
• mhfd_code_segment ( type: esriFieldTypeString, alias: MHFD Code Segment, editable: true, nullable: true, length: 50, defaultValue: null, modelName: mhfd_code_segment )
• stream_segment_id ( type: esriFieldTypeInteger, alias: Stream Segment ID, editable: true, nullable: true, defaultValue: null, modelName: stream_segment_id )
• stream_length_ft ( type: esriFieldTypeDouble, alias: Stream Segment Length (ft), editable: true, nullable: true, defaultValue: null, modelName: stream_length_ft )
• stream_length_miles ( type: esriFieldTypeDouble, alias: Stream Segment Length (mi), editable: true, nullable: true, defaultValue: null, modelName: stream_length_miles )
• Notes ( type: esriFieldTypeString, alias: Notes, editable: true, nullable: true, length: 255, defaultValue: null, modelName: Notes )
• Shape__Length ( type: esriFieldTypeDouble, alias: Shape_Length, editable: false, required: true, nullable: true, defaultValue: null, modelName: Shape_Length )
• Shape__Area ( type: esriFieldTypeDouble, alias: Shape_Area, editable: false, required: true, nullable: true, defaultValue: null, modelName: Shape_Area )

Types:

ID: Avulsion Hazard Zone
Name: Avulsion Hazard Zone,Stream Corridor
Domains:
• Scale:
  Inherited
• SMC_Type:
  Inherited
Templates:
• Name: Avulsion Hazard Zone,Stream Corridor
  Description:
  Prototype:
  Scale: Stream Corridor
  Str_Name: null
  Notes: null
  SMC_Type: Avulsion Hazard Zone
  SMC_Source: null
  SMC_Description: null
  SMC_Date: null
  smc_buffer_width_ft: null
  drainage_area_sqkm: null
  mhfd_code_segment: null
  stream_segment_id: null
  stream_length_ft: null
  stream_length_miles: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: Active Stream Corridor
Name: Active Stream Corridor,Stream Corridor
Domains:
• Scale:
  Inherited
• SMC_Type:
  Inherited
Templates:
• Name: Active Stream Corridor,Stream Corridor
  Description:
  Prototype:
  Scale: Stream Corridor
  Str_Name: null
  Notes: null
  SMC_Type: Active Stream Corridor
  SMC_Source: null
  SMC_Description: null
  SMC_Date: null
  smc_buffer_width_ft: null
  drainage_area_sqkm: null
  mhfd_code_segment: null
  stream_segment_id: null
  stream_length_ft: null
  stream_length_miles: null
  
  Drawing Tool: esriFeatureEditToolPolygon
• Name: Active Stream Corridor,Watershed
  Description:
  Prototype:
  Scale: Watershed
  Str_Name: null
  Notes: null
  SMC_Type: Active Stream Corridor
  SMC_Source: null
  SMC_Description: null
  SMC_Date: null
  smc_buffer_width_ft: null
  drainage_area_sqkm: null
  mhfd_code_segment: null
  stream_segment_id: null
  stream_length_ft: null
  stream_length_miles: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: Fluvial Hazard Buffer
Name: Fluvial Hazard Buffer,Stream Corridor
Domains:
• Scale:
  Inherited
• SMC_Type:
  Inherited
Templates:
• Name: Fluvial Hazard Buffer,Stream Corridor
  Description:
  Prototype:
  Scale: Stream Corridor
  Str_Name: null
  Notes: null
  SMC_Type: Fluvial Hazard Buffer
  SMC_Source: null
  SMC_Description: null
  SMC_Date: null
  smc_buffer_width_ft: null
  drainage_area_sqkm: null
  mhfd_code_segment: null
  stream_segment_id: null
  stream_length_ft: null
  stream_length_miles: null
  
  Drawing Tool: esriFeatureEditToolPolygon
• Name: Fluvial Hazard Buffer,Watershed
  Description:
  Prototype:
  Scale: Watershed
  Str_Name: null
  Notes: null
  SMC_Type: Fluvial Hazard Buffer
  SMC_Source: null
  SMC_Description: null
  SMC_Date: null
  smc_buffer_width_ft: null
  drainage_area_sqkm: null
  mhfd_code_segment: null
  stream_segment_id: null
  stream_length_ft: null
  stream_length_miles: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: Stream Management Corridor
Name: Stream Management Corridor,Watershed
Domains:
• Scale:
  Inherited
• SMC_Type:
  Inherited
Templates:
• Name: Stream Management Corridor,Watershed
  Description:
  Prototype:
  Scale: Watershed
  Str_Name: null
  Notes: null
  SMC_Type: Stream Management Corridor
  SMC_Source: null
  SMC_Description: null
  SMC_Date: null
  smc_buffer_width_ft: null
  drainage_area_sqkm: null
  mhfd_code_segment: null
  stream_segment_id: null
  stream_length_ft: null
  stream_length_miles: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

Capabilities: Query,Extract

Sync Can Return Changes: false

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata   Update Metadata