Layer: Lake Simcoe Pro Act Boundary (ID: 23)

Name: Lake Simcoe Pro Act Boundary

Display Field: SUBWSHED

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Shows the line feature class built from the Lake Simcoe Protection Act Watershed Boundary (LSPAWB) is owned by the Ontario Ministry of Environment (MOE), in cooperation with Lake Simcoe Region Conservation Authority (LSRCA) and the Ontario Ministry of Natural Resources (MNR), and was created to support the Lake Simcoe Protection Act. The boundary was first created by LSRCA in 2005 as part of a Source Water Protection boundary project using the LSRCA 2002 5-metre Digital Elevation Model (DEM) and the best available data at the time. The portions of the watershed where the boundary shared a border with the Toronto and Region Conservation Authority and the Nottawasga Valley Conservation Authority were manually reviewed and updated though a series of consultations between the agencies. The boundary was created in ArcHydro using following procedures: 1) The updated watercourse was burned into the DEM, which generates Re-conditioned DEM; 2) Sinks in the Re-conditioned DEM were filled; 3) Flow direction grid was generated from the DEM updated in Steps 2); 4) Flow accumulation grid was generated; 5) Stream Definition grid was generated; 6) Stream Definition Segmentation grid was generated from the result in Step 5); 7) Catchment Grid was generated based on the Stream Definition Segmentation grid; 8) Catchment Grid was then converted to catchment polygons; 9) Drainage lines were generated; 10) Then we generated adjoint catchments and drainage points feature classes; 11) Subwatershed outlet points was digitized in a new feature class layer for the all sub watersheds for which we need to delineate boundaries 12) Run subwatershed delineation process; 13) The subwatersheds where dissolved to create one polygon. In 2008-09 in preparation for the Lake Simcoe Protection Plan data collection was performed on the hydrology layers for the Ramara Creeks, Talbot River, Upper Talbot River, and Whites Creek Subwatersheds of the watershed and the watershed boundary in that area was revised. The following steps were used in the delineation of the boundary in the north eastern portion of the watershed. The same Arc Hydro steps were followed as in the original boundary creation except for one additional step in which the culverts were burned into the DEM at the same time the watercourse was. The dataset was in turn converted to geodatabase format and additional attribute information was added to support the Act and the utility of the product for the end-user.

Copyright Text: Source: Ministry of Environment (MOE)

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON, PBF

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Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: false

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

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HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
FID_ROPWATERSHEDLSRCA ( type: esriFieldTypeInteger, alias: FID_ROPWATERSHEDLSRCA )
SUBWSHED ( type: esriFieldTypeString, alias: SUBWSHED, length: 35 )
ID ( type: esriFieldTypeInteger, alias: ID )
SHAPE ( type: esriFieldTypeGeometry, alias: SHAPE )
SHAPE.STLength() ( type: esriFieldTypeDouble, alias: SHAPE.STLength() )

Supported Operations: Query Query Attachments Generate Renderer Return Updates

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