Description: Drainage lines were obtained from First Base Solution and were further modified and updated to reflect recent changes due to changing developments.
Service Item Id: 119f162d11a1405d93ad03eceff6b6d0
Copyright Text: CLOCA, Engineering Department, Natural Heritage Department
Description: CLOSPA comprises 15 small watersheds, the largest of which are the Lynde, Oshawa, Harmony, Black, Farewell, Bowmanville, and Soper Creek watersheds. The municipalities within these watersheds include upper-tier and lower-tier municipalities. These municipalities include: - City of Pickering - Town of Ajax - Town of Whitby - City of Oshawa - Municipality of Clarington - Region of Durham - Township of Uxbridge - Township of Scugog.
Description: Entity Name: SWP Intake Protection ZoneTable Name: SWP_INTAKE_PROTECTION_ZONE_FTThe area around an intake pipe in a lake or river that draws in the surface water used to supply the municipal drinking water system. Three zones, from the closest to the farthest from the intake, rate the vulnerability threat. IPZ-1: FIRST ZONE around intake, very vulnerable to contamination. Direct and immediate impacts are possible as there is no time to take mitigating action.IPZ-2: SECOND ZONE around the intake where direct impacts are possible because contaminants may reach intake within 2 hours. IPZ-3: THIRD ZONE and the largest zone around the intake where activities can impact the source water, but there is time to take action to ensure the intake and municipal water is not impacted.#ATTRIBUTE/COLUMN NAMEDATATYPEREQDESCRIPTION1OGF IDOBJECTIDNUMBER(13)YesA unique numeric provincial identifier assigned to each object.2Source Protection Area IDSPA_IDNUMBER(2)YesIdentifier for the source protection area that provided the original data about the feature. SPA_ID values range from 0 to 48.3IPZ IdentifierIPZ_IDNUMBER(13)YesUnique number associated with each intake protection zone.4Intake IdentifierINTAKE_IDNUMBER(13)YesID of the Intake associated with the IPZ, if clearly defined otherwise NULL5IPZ TypeIPZ_TYPENUMBER(1)YesThe type of IPZ (1, 2, 3)7SHAPESHAPESDO_GEOMETRYYesGeometry attribute.
Description: Entity Name: SWP Intake Protection ZoneTable Name: SWP_INTAKE_PROTECTION_ZONE_FTThe area around an intake pipe in a lake or river that draws in the surface water used to supply the municipal drinking water system. Three zones, from the closest to the farthest from the intake, rate the vulnerability threat. IPZ-1: FIRST ZONE around intake, very vulnerable to contamination. Direct and immediate impacts are possible as there is no time to take mitigating action.IPZ-2: SECOND ZONE around the intake where direct impacts are possible because contaminants may reach intake within 2 hours. IPZ-3: THIRD ZONE and the largest zone around the intake where activities can impact the source water, but there is time to take action to ensure the intake and municipal water is not impacted.#ATTRIBUTE/COLUMN NAMEDATATYPEREQDESCRIPTION1OGF IDOBJECTIDNUMBER(13)YesA unique numeric provincial identifier assigned to each object.2Source Protection Area IDSPA_IDNUMBER(2)YesIdentifier for the source protection area that provided the original data about the feature. SPA_ID values range from 0 to 48.3IPZ IdentifierIPZ_IDNUMBER(13)YesUnique number associated with each intake protection zone.4Intake IdentifierINTAKE_IDNUMBER(13)YesID of the Intake associated with the IPZ, if clearly defined otherwise NULL5IPZ TypeIPZ_TYPENUMBER(1)YesThe type of IPZ (1, 2, 3)7SHAPESHAPESDO_GEOMETRYYesGeometry attribute.
Description: Entity Name: SWP Intake Protection ZoneTable Name: SWP_INTAKE_PROTECTION_ZONE_FTThe area around an intake pipe in a lake or river that draws in the surface water used to supply the municipal drinking water system. Three zones, from the closest to the farthest from the intake, rate the vulnerability threat. IPZ-1: FIRST ZONE around intake, very vulnerable to contamination. Direct and immediate impacts are possible as there is no time to take mitigating action.IPZ-2: SECOND ZONE around the intake where direct impacts are possible because contaminants may reach intake within 2 hours. IPZ-3: THIRD ZONE and the largest zone around the intake where activities can impact the source water, but there is time to take action to ensure the intake and municipal water is not impacted.#ATTRIBUTE/COLUMN NAMEDATATYPEREQDESCRIPTION1OGF IDOBJECTIDNUMBER(13)YesA unique numeric provincial identifier assigned to each object.2Source Protection Area IDSPA_IDNUMBER(2)YesIdentifier for the source protection area that provided the original data about the feature. SPA_ID values range from 0 to 48.3IPZ IdentifierIPZ_IDNUMBER(13)YesUnique number associated with each intake protection zone.4Intake IdentifierINTAKE_IDNUMBER(13)YesID of the Intake associated with the IPZ, if clearly defined otherwise NULL5IPZ TypeIPZ_TYPENUMBER(1)YesThe type of IPZ (1, 2, 3)7SHAPESHAPESDO_GEOMETRYYesGeometry attribute.
Description: Entity Name: SWP Highly Vulnerable AquiferTable Name: SWP_HIGHLY_VULNERABLE_AQUIFR_FTAn underground water supply, or aquifer, that can easily be contaminated because overlaying soil layers are thin or permeable.#ATTRIBUTE/COLUMN NAMEDATATYPEREQDESCRIPTION1OGF IDOBJECTIDNUMBER(13)YesA unique numeric provincial identifier assigned to each object.2Source Protection Area IDSPA_IDNUMBER(2)YesIdentifier for the source protection area that provided the original data about the feature. 3Vulnerability ScoreVULNERABILITY_SCORENUMBER(1)YesThe vulnerability score assigned to an aquifer. The vulnerability score value is always 6 for a highly vulnerable aquifer (HVA).5SHAPESHAPESDO_GEOMETRYYesGeometry attribute.
Description: Entity Name: SWP Significant Groundwater Recharge AreaTable Name: SWP_SIGNIF_GW_RECHARGE_AREA_FTAn area can be considered a significant groundwater recharge area if (1) the area annually recharges water to the underlying aquifer at a rate that is greater than the rate of recharge across the whole of the related groundwater recharge area by a factor of 1.15 or more; or (2) the area annually recharges a volume of water to the underlying aquifer that is 55% or more of the volume determined by subtracting the annual evapotranspiration for the whole of the related groundwater recharge area from the annual precipitation for the whole of the related groundwater recharge area.#ATTRIBUTE/COLUMN NAMEDATATYPEREQDESCRIPTION1OGF IDOBJECTIDNUMBER(13)YesA unique numeric provincial identifier assigned to each object.2Source Protection Area IDSPA_IDNUMBER(2)YesIdentifier for the source protection area that provided the original data about the feature. SPA_ID values range from 0 to 48.4SHAPESHAPESDO_GEOMETRYYesGeometry attribute.Clipping SGRAs The jurisdictional identification of SGRA was approved by the SPC. However, Technical Rule (45) requires that “an area shall NOT be delineated as a SGRA area unless the area has a hydrological connection to a surface water body or aquifer that is a source of drinking water for a drinking water system.” This includes private systems (O. Reg. 170/03). This Technical Rule introduces the idea of clipping out SGRAs that are of no significance from a drinking water point of view, since it would not make practical sense to protect them. These areas may be important in other contexts, but they are not considered significant under the CWA. In the CTC Region, the SGRA located within the municipal service boundary that are on the Lake Ontario shoreline and sourced from Lake Ontario have been clipped out if no drinking water systems (as defined in the Safe Drinking Water Act, 2002) depend on those SGRAs.