Layers:

Layer: Waterbodies extent to OHWM (16)


Name: Waterbodies extent to OHWM

Display Field: Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Using a hand digitized Ordinary High Water Mark (OHWM) created through inspection of aerial imagery collected August 15 2025 and the digital surface model created from those images, these polygons denote the extent of waterbodies within the orthoimagery.

Copyright Text: Author: Kassie Colson ACCS, Funding: Alaska Department of Fish and Game

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -16625448.5257808
YMin: 8744254.81193225
XMax: -16625257.1165025
YMax: 8744628.16796698
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 5773 (5773)


Drawing Info:

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HasZ: true

HasM: true

Time Info:

Start Time Field: null
End Time Field: null
Track ID Field: null
Time Extent: null

Time Reference: UTC
Time Interval: 0
Time Interval Units:
Has Live Data: false
Export Options: null

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• Shape_Leng (type: esriFieldTypeDouble, alias: Shape_Leng, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Name (type: esriFieldTypeString, alias: Name, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Depth (type: esriFieldTypeDouble, alias: Depth, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: Waterbodies extent to OHWM
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/24/2026 3:12:06 AM

Schema Last Edit Date: 7/24/2026 3:12:06 AM

Data Last Edit Date: 7/24/2026 3:12:06 AM

Layer: Bare Ground Reference Areas (17)


Name: Bare Ground Reference Areas

Display Field: Shape_Leng

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: A set of polygons denoting the area in which data was extracted to train the classification proceedure for determining which of the August 15 2025 surveyed areas were bare ground as opposed to vegetation. For more details see the associated 2025 memo.

Copyright Text: Author: Kassie Colson ACCS, Funding: Alaska Department of Fish and Game

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -16625397.2084284
YMin: 8744420.87845078
XMax: -16625352.8655681
YMax: 8744520.97924039
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 5773 (5773)


Drawing Info:

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HasZ: true

HasM: true

Time Info:

Start Time Field: null
End Time Field: null
Track ID Field: null
Time Extent: null

Time Reference: UTC
Time Interval: 0
Time Interval Units:
Has Live Data: false
Export Options: null

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• Shape_Leng (type: esriFieldTypeDouble, alias: Shape_Leng, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: Bare Ground Reference Areas
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/24/2026 3:12:06 AM

Schema Last Edit Date: 7/24/2026 3:12:06 AM

Data Last Edit Date: 7/24/2026 3:12:06 AM

Layer: Bare Ground Analysis Area (18)


Name: Bare Ground Analysis Area

Display Field: Shape_Leng

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: A set of polygons denoting the area in which data was classified into either bare ground or vegetation for determining which of the August 15 2025 surveyed areas were denuded. For more details see the associated 2025 memo. Extent begins at OHWM and does not extend into the creek or channel.

Copyright Text: Author: Kassie Colson ACCS, Funding: Alaska Department of Fish and Game

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -16625442.4155283
YMin: 8744259.08516591
XMax: -16625306.277991
YMax: 8744599.06218823
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 5773 (5773)


Drawing Info:

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HasZ: true

HasM: true

Time Info:

Start Time Field: null
End Time Field: null
Track ID Field: null
Time Extent: null

Time Reference: UTC
Time Interval: 0
Time Interval Units:
Has Live Data: false
Export Options: null

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• Shape_Leng (type: esriFieldTypeDouble, alias: Shape_Leng, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: Bare Ground Analysis Area
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/24/2026 3:12:06 AM

Schema Last Edit Date: 7/24/2026 3:12:06 AM

Data Last Edit Date: 7/24/2026 3:12:06 AM

Layer: Channel Centreline (19)


Name: Channel Centreline

Display Field: Shape_Leng

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: A line feature denoting the centreline of the tidegut/channel linking Ducklake to Wasilla Creek as determined through manual inspection of the August 15 2025 orthoimagery and the associated DSM. The line seeks to denote the deepest part of the channel, which is often, though not always, the centre of the waterway.

Copyright Text: Author: Kassie Colson ACCS, Funding: Alaska Department of Fish and Game

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -16625374.5068808
YMin: 8744257.75048282
XMax: -16625342.2530885
YMax: 8744553.07748659
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 5773 (5773)


Drawing Info:

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HasZ: true

HasM: true

Time Info:

Start Time Field: null
End Time Field: null
Track ID Field: null
Time Extent: null

Time Reference: UTC
Time Interval: 0
Time Interval Units:
Has Live Data: false
Export Options: null

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• Shape_Leng (type: esriFieldTypeDouble, alias: Shape_Leng, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Length (type: esriFieldTypeInteger, alias: Length, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Depth (type: esriFieldTypeInteger, alias: Depth, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: Channel Centreline
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/24/2026 3:12:06 AM

Schema Last Edit Date: 7/24/2026 3:12:06 AM

Data Last Edit Date: 7/24/2026 3:12:06 AM

Layer: Waterbody OHWM (20)


Name: Waterbody OHWM

Display Field: Name

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: A set of line features denoting the Ordinary High Water Mark (OHWM) of Wasilla Creek and the channel linking Wasilla creek and Duck Lake, created through inspection of aerial imagery collected August 15 2025 and the digital surface model created from those images. Hand drawn to the line approximating the OHWM as best could be determined.

Copyright Text: Author: Kassie Colson ACCS, Funding: Alaska Department of Fish and Game

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -16625448.5257808
YMin: 8744254.81193225
XMax: -16625257.1165025
YMax: 8744628.16796698
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 5773 (5773)


Drawing Info:

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HasZ: true

HasM: true

Time Info:

Start Time Field: null
End Time Field: null
Track ID Field: null
Time Extent: null

Time Reference: UTC
Time Interval: 0
Time Interval Units:
Has Live Data: false
Export Options: null

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• Shape_Leng (type: esriFieldTypeDouble, alias: Shape_Leng, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Name (type: esriFieldTypeString, alias: Name, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: Waterbody OHWM
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/24/2026 3:12:06 AM

Schema Last Edit Date: 7/24/2026 3:12:06 AM

Data Last Edit Date: 7/24/2026 3:12:06 AM

Layer: OHWM Point Collection (21)


Name: OHWM Point Collection

Display Field: Name

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: This point collection denotes the ordinary high water mark line, as manually digitized from imagery acquired on August 15 2025 and the resultant DSM, denoting where the OHWM line feature changes direction. This was used for analysis of the depth of the channel relative to the height of the banks.

Copyright Text: Author: Kassie Colson ACCS, Funding: Alaska Department of Fish and Game

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -16625448.5257808
YMin: 8744254.81193225
XMax: -16625257.1165025
YMax: 8744628.16796698
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 5773 (5773)


Drawing Info:

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HasZ: true

HasM: true

Time Info:

Start Time Field: null
End Time Field: null
Track ID Field: null
Time Extent: null

Time Reference: UTC
Time Interval: 0
Time Interval Units:
Has Live Data: false
Export Options: null

Has Attachments: false

Has Geometry Properties: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• Name (type: esriFieldTypeString, alias: Name, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• ORIG_FID (type: esriFieldTypeInteger, alias: ORIG_FID, SQL Type: sqlTypeOther, nullable: true, editable: true)
• RGB_Imager (type: esriFieldTypeSingle, alias: RGB_Imager, SQL Type: sqlTypeOther, nullable: true, editable: true)

Templates:

Name: OHWM Point Collection
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/24/2026 3:12:08 AM

Schema Last Edit Date: 7/24/2026 3:12:08 AM

Data Last Edit Date: 7/24/2026 3:12:08 AM