Description: Wellhead Protection Areas are the areas of influence on the land around a municipal well, the size of which is determined by how quickly water travels underground to the well, measured in years. For the ORMCP, a standard 100 metre radius circle is provided around each municipal well, as well as a 0-2 year zone, 2-5 Year Zone, 5-10 Year Zone, and a 10-25 Year Zone.The shape of the WHPAs is based on numerical hydrogeological modelling results for all of the York Region production wells and are dynamic to some degree, since they can be influenced by a number of factors such as the slope of the land, the depth of the well, and the type of sediment. The maps that this data is based on have supporting reports that discuss their development and are available via the Water Resources group.
Description: Wellhead Protection Areas are the areas of influence on the land around a municipal well, the size of which is determined by how quickly water travels underground to the well, measured in years. For source protection planning, the Clean Water Act required that a standard 100 metre radius circle be provided around each municipal well; that is called the WHPA-A. The WHPA-B represents the 2-year time of travel. The WHPA-C represents the 5-year time of travel and the WHPA-D represents the 25-year time of travel.The shape of the WHPAs is based on numerical hydrogeological modelling results for all of the York Region production wells and are dynamic to some degree, since they can be influenced by a number of factors such as the slope of the land, the depth of the well, and the type of sediment. The maps that this data is based on have supporting reports that discuss their development and are available via the Water Resources group.Please refer to the Clean Water Act approved symbology when using this data. (http://www.ene.gov.on.ca/stdprodconsume/groups/lr/@ene/@resources/documents/resource/std01_079853.pdf)
Description: The data shows the Vulnerability Scoring (VS) zones in accordance with the Technical Rules for the Clean Water Act (issued in December 2008) for all municipal well fields in York Region. VS values of 2-10 are provided within Wellhead Protection Areas (WHPA) A, B, C and D (which represent the 100 metre, 0-2 year, 2-5 year and 5-25 year zones respectively), as based on scoring rules provided by the Ministry of the Environment (MOE) in the Clean Water Act. The figures and the final report present results of data compilation and computer simulations of a complex geologic setting. As outlined in the final report, data errors and data gaps are likely present in information provided to the consultant (EarthFX Inc.). In addition, computer models represent a simplification of the actual geologic and hydrogeologic conditions, and are subjected to simplifying assumptions. The data has been created by EarthFX Inc. The geologic and hydrogeologic data used as input into the numerical modelling procedure has been provided by various sources, including the MOE water-well records, previous consulting/research reports, and York Region.Please refer to the Clean Water Act approved symbology when using this data. (http://www.ene.gov.on.ca/stdprodconsume/groups/lr/@ene/@resources/documents/resource/std01_079853.pdf)
SERV_AREA
(
type: esriFieldTypeString, alias: Service Area, editable: true, nullable: true, length: 60, defaultValue: null, modelName: SERV_AREA
, Coded Values:
[Area 1 Linear Wastewater: Area 1 Linear Wastewater]
, [Area 2N Linear Water & Wells: Area 2N Linear Water & Wells]
, [Area 2S Linear Water & Wells: Area 2S Linear Water & Wells]
, ...9 more...
)
Description: The contiguous area of land and water immediately surrounding a surface water intake, which includes: the distances from the intake (IPZ1, 120m inland and 1000m on water); a minimum travel time of the water associated with the intake of a municipal residential system or other designated system, based on the minimum response time for the water treatment plant operator to respond to adverse conditions or an emergency (IPZ2, 2hr time of travel); and the remaining watershed area upstream of the minimum travel time area (also referred to as the Total Water Contributing Area) - applicable to inland water courses and inland lakes only (IPZ3) The data will be final once the Assessment reports are approved.
Description: Highly Vulnerable Aquifers of the Lake Simcoe Region Conservation Authority. Highly Vulnerable Aquifers are aquifers that are more susceptible to contamination because of their location. In general, an HVA will consist of source granular aquifer materials (e.g. sand and/or gravel) or fractured rock that has a high permeability and is exposed near the ground surface with a relatively shallow water table.
Description: Highly Vulnerable Aquifers of the Toronto & Region Source Protection Authority Highly Vulnerable Aquifers are aquifers that are more susceptible to contamination because of their location. In general, an HVA will consist of source granular aquifer materials (e.g. sand and/or gravel) or fractured rock that has a high permeability and is exposed near the ground surface with a relatively shallow water table.
Copyright Text: Data provided by Toronto and Region Conservation Authority, 2008
Name: Significant Groundwater Recharge Areas LSRCA
Display Field: SUBWATERSHEDNAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: Significant Groundwater Recharge Areas of the Lake Simcoe Region Conservation Authority. Significant Groundwater Recharge Areas are recharge areas that are characterized by permeable soils, such as sand or gravel that allow the water to seep easily into the ground and flow to an aquifer. A recharge area is considered significant when it helps maintain the water level in an aquifer that supplies a community with drinking water, or supplies groundwater recharge to a cold water ecosystem that is dependent on this recharge to maintain its ecological function.
Description: Significant Groundwater Recharge Area for the Toronto & Region Source Protection Authority. Significant Groundwater Recharge Areas are recharge areas that are characterized by permeable soils, such as sand or gravel that allow the water to seep easily into the ground and flow to an aquifer. A recharge area is considered significant when it helps maintain the water level in an aquifer that supplies a community with drinking water, or supplies groundwater recharge to a cold water ecosystem that is dependent on this recharge to maintain its ecological function.
Copyright Text: Data provided by Toronto and Region Conservation Authority, 2008
Description: Watersheds are defined as geographic areas from which water drains to a particular stream, river or body of water. Watersheds are composed of sub-watersheds and catchments. Information was taken from the Lake Simcoe Region Conservation Authority (LSRCA).
Copyright Text: Data provided by Lake Simcoe Region Conservation Authority, 2006
Description: Watersheds are defined as geographic areas from which water drains to a particular stream, river or body of water. Watersheds are composed of sub-watersheds and catchments. Information was taken from the Toronto Region Conservation Authority (TRCA) to show thewatershed boundaries for TRCA jurisdiction.
Copyright Text: Data provided by Toronto and Region Conservation Authority, 2006
Description: In York Region, the WHPA-Q1 and WHPA-Q2 are identical in size and shape. These areas are used to identify locations of potential water quantity threats. There are two types of threats: those associated with water demand and those associated with reductions to groundwater recharge. The WHPA-Q1 delineates an area where there is potential for water demand threats (i.e. new wells). The WHPA-Q2 delineates an area where there is potential for threats from reductions in groundwater recharge (i.e. new development). The WHPA-Q1, WHPA-Q2 were delineated as part of the York Region Tier 3 water budget study that was completed for the Clean Water Act, 2006. A water budget is a quantitative measure of the hydrologic cycle components and an understanding of the processes and pathways in which water flows through watersheds. These two areas were delineated using the Tier 3 Water Budget numerical model. Please refer to the Clean Water Act approved symbology when using this data. (http://www.ontario.ca/environment-and-energy/mapping-symbology-clean-water-act)
Name: Vulnerability Scores - Intake Protection Zone
Display Field: INTAKE_NAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: The contiguous area of land and water immediately surrounding a surface water intake, which includes: the distances from the intake (IPZ1, 120m inland and 1000m on water); a minimum travel time of the water associated with the intake of a municipal residential system or other designated system, based on the minimum response time for the water treatment plant operator to respond to adverse conditions or an emergency (IPZ2, 2hr time of travel); and the remaining watershed area upstream of the minimum travel time area (also referred to as the Total Water Contributing Area) - applicable to inland water courses and inland lakes only (IPZ3) The data will be final once the Assessment reports are approved.