Parent Layer: COASTAL PROCESSES

Name: Coastal Processes: Shoreline Type

Display Field: NearshoreAssessment

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: This data was derived as part of the Overall Assessment of the State of Nearshore Waters. Across the Great Lakes, much of the nearshore, waters edge or back of beach has been altered with engineered structures or artificial material. Hardened shorelines reduce coastal resiliency by altering sediment dynamics, accelerating erosion, increasing water turbidity & destroying local vegetation. Shoreline hardening is assessed by determining the percent of the total length of shoreline in a Regional Unit that is hardened.The shoreline of the Canadian Great Lakes has been delineated as either "natural" or "hardened" based on the following definitions:Natural Shoreline: no engineered or aritificial structures in the nearshore, at the waters edge, toe of bluff, backshore or back of the beach; rising and falling water levels result in natural changes in the shoreline position; wildlife usage and vegetation migration upslope and downslope can occur unimpeded; natural vegetation communities, consistent with local conditions, are generally present along the shore.Hardened Shoreline: the nearshore, waters edge, toe of bluff, backshore or back of beach has been altered with engineered structures or artificial material (e.g. offshore breakwaters, lakefill, groynes, seawalls, revetments, dumped concrete rubble, artificial channels, dikes, etc.); natural shoreline processes are altered, and native vegetation communities are generally absent.Best available, most recent aerial imagery was used for the delineation, at a scale of approximately 1:2,000. Low Stress: <25% shoreline hardening; Moderate Stress: 25-50% shoreline hardening; High Stress: >50% shoreline hardening

Copyright Text: Environment and Climate Change Canada (ECCC) - Strategic Policy Branch - RDGO

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Extent:

XMin: 405497.001699999
YMin: -695608.3605999984
XMax: 1620722.6714999974
YMax: 29900.001899998635
Spatial Reference: 3978  (3978)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: ShorelineType
Field 2: null
Field 3: null
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UniqueValueInfos:
• Value: Hardened
  Label: Hardened
  Description:
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• Value: Natural
  Label: Natural
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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• NearshoreAssessment ( type: esriFieldTypeString, alias: Nearshore Assessment, length: 20 )
• AssessmentYear ( type: esriFieldTypeString, alias: Assessment Year, length: 4 )
• AssessmentCategory ( type: esriFieldTypeString, alias: Assessment Category, length: 50 )
• ShorelineType ( type: esriFieldTypeString, alias: Shoreline Type, length: 15 )
• LengthKM ( type: esriFieldTypeDouble, alias: Length (km) )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )

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