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    Get mapping data related to the Northwest Greater Toronto Area Transmission Corridor Identification Study. In June 2019, the Ministry of Energy, Northern Development and Mines along with Ontario’s electricity system planner, the Independent Electricity System Operator, launched the Northwest GTA Transmission Corridor Identification Study to identify an appropriate corridor of land for use by future power lines if and when the need arises. The shapefiles available for download outline the outer boundaries for: * the Northwest GTA Transmission Corridor Identification Study area, announced in June 2019 * the Northwest GTA Transmission Corridor Narrowed Area of Interest, announced in September 2019 * The Northwest GTA Transmission Corridor 2020 Narrowed Area of Interest, announced in November 2020

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    This data set shows utility lines that provide services for: * power * water * communications * heating fuel They include: * communication lines/submerged communication lines * hydro lines/submerged hydro lines * natural gas pipelines/submerged natural gas pipelines * water pipelines/submerged water pipelines * unknown pipelines * unknown transmission lines Instructions for downloading this dataset: * select the link below and scroll down the metadata record page until you find **Transfer Options** in the **Distribution Information** section * select the link beside the **Data for download** label * you must provide your name, organization and email address in order to access the dataset. This product requires the use of GIS software. *[GIS]: geographic information system

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    The attribute table included in the dataset provides some limited metadata information that is specific to each lake. This includes the: * survey year * survey method * original map scale This dataset should be used for discovery of Bathymetry data. It provides no bathymetric information, but allows users to discover where bathymetry data exists and in what format. Related datasets: * [Ontario waterbody location identifer](https://data.ontario.ca/dataset/ontario-waterbody-location-identifier)

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    A feature is a representation of a real world object, such as a lake, stream, dam or rapid. There are three hydrographic feature classes:  points, lines and polys.   All may impede or be hazardous to waterflow and/or navigation on a watercourse or waterbody. This data shows natural and manmade line features. Examples include: * break walls * dams * waterfalls * lock-gates * rapids * rocks * Sea Lamprey barriers * shipwrecks This product requires the use of GIS software. [Technical Bulletin: Data migrated to new Ontario Hydro Network (OHN) - Hydrographic Feature Data Classes (PDF)](http://geo2.scholarsportal.info/proxy.html?http:__maps.scholarsportal.info/files/PDFS/public/OGDE/OHN/TB-HydrographicFeatureClasses_Implementation_100908.pdf) *[GIS]: geographic information system

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    The dataset identifies the location and types of ANSIs that are commonly used in maps for resource management purposes. Official LIO title: ANSI *[ANSIs]: Areas of Natural and Scientific Interest *[ANSI]: Areas of Natural and Scientific Interest

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    This dataset combines: * [Far North Land Cover](/dataset/far-north-land-cover) * [Southern Ontario Land Resource Information System](/dataset/southern-ontario-land-resource-information-system) * [Provincial Land Cover 2000 Edition](/dataset/provincial-land-cover) While each of these source products has different pixel resolutions, projections and classifications, the combined OLCC data set is a standardized product. It has a: * 15 meter pixel resolution * Ontario Lambert Conformal Conic coordinate system * 30 land cover class structure The standardized classification has been accomplished at the expense of the more detailed class structures contained in the original 3 products. Where possible, the original land cover products should be used for analysis.

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    Data covers natural, rural and urban lands in Ecoregions 6E and 7E, current to 2000-2002. This land use inventory supports key provincial initiatives including: * source water protection * natural spaces * biodiversity conservation * state of resources reporting

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    Wetlands are lands that are seasonally or permanently flooded by shallow water. They also include lands where the water table is close to the surface. The wetland polygons are managed independently from other hydro data classes and may overlap water bodies or other hydro data. Not all wetlands have been identified and mapped. Active maintenance is ongoing province wide. The currency and accuracy of the spatial representation is variable and requires on-the-ground verification.

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    A source protection area (SPA) is an area of land and water governed by a Source Protection Authority, an agency, person or body. This dataset defines the geographic boundaries where each SPA's terms of reference, assessment reports and source protection plans must be developed. *[SPA]: source protection area

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    Statistics include the flood magnitude with the following recurrence intervals: * 1:2 years * 1:2.33 years * 1: 5 years * 1:10 years * 1:20 years * 1:25 years * 1:50 years * 1:100 years * 1:200 years * 1: 500 years These flood statistics can be used for applications such as floodplain delineation and the design of hydraulic structures.