Click to view Metadata The first iteration of Drainage was obtained from First Base Solutions in 2000. CLOCA kept receiving consecutive updates in 2002, 2005, 2008 and 2010. In 2011 data was updated to meet the WRIP Hydrographic Specifications. The 2010 drainage and 2008 headwater portion of the dataset were merged to obtain current Drainage dataset.Drainage was divided into 3 sub-types in the field named ‘EdgeType’, with flow and shoreline being the main classes:- Flow;- Shoreline;- Other.Other hydrographic-related features are captured and included under the ‘Other’ class. The feature types included in these feature classes are not water features themselves, but may pose impediments or hazards to water flow or navigation. These features usually occur on top of waterbody or watercourse features, which continue underneath or around them.Since the 2011 drainage update additional updates were performed:-The drainage segments falling within Natural Heritage System were coded as NHS – 2013;-The Stream Order updates (2016) - the updates were performed for the RIPARIAN analysis.Please see Drainage Specifications for Code descriptions.

Click to view Metadata Scientific Watersheds was created over the span of several years. The watersheds are updated as CLOCA re-delineates/updates its watershed boundaries using Arc Hydro.

Click to view Metadata Land owned by CLOCA strictly for the purpose of conservation. This land is NOT publicly accessible.

Click to view Metadata The Targeted Terrestrial Natural Heritage System (TTNHS) is determining where additional natural cover should occur adjacent to the FNHS, in order to achieve watershed health targets. CLOCA adapted the Targeted Terrestrial Natural Heritage System (TTNHS) as developed by the Toronto Region Conservation Authority (TRCA), with minor changes to reflect local conditions for CLOCA watersheds. The approach used in defining the TTNHS is broken into three components:1) evaluation of current habitat patch characteristics using landscape metrics;2) determining the targeted condition for the landscape;3) identifying protection and restoration opportunities to reach the predetermined target condition for the watersheds within the CLOCA jurisdiction.Developing the Natural Heritage System

Click to view Metadata The Natural Heritage System was derived by merging the Functional NHS with the Targeted Terrestrial NHS. Please see these individual layers for more information with regards to their development.Developing the Natural Heritage System

Click to view Metadata The Land Cover dataset is derived using orthophoto interpretation and classifies all non-ELC landforms. Classifications include: Aggregate, Agriculture Facility, Airport, Athletic Field, Commercial, Crop Field, Golf Facility, High Density Urban Residential, Industrial, Inst, Institutional Building, Institutional Greenspace, Landfill, Park, Pasture, Railway, Rural Residential, Ski Hill, Transportation Corridor, Transportation Greenspace, Treed Field, Urban Residential Utility Transfer Station, Water Feature.

Click to view Metadata A damage centre is a polygon that is based on the extents of current floodlines and indicates a potential area of significant structural damage due to flooding. Generally these areas are created where at least one structure (i.e. building) is found to be within the floodplain.

Zoom in on the map above and click your area of interest or use the Tile Index linked below to determine which package(s) you require for download. The DTM data is available in the form of 1-km by 1-km non-overlapping tiles grouped into packages for download.This dataset is a compilation of lidar data from multiple acquisition projects, as such specifications, parameters and sensors may vary by project. See the detailed User Guide linked below for additional information.

You can monitor the availability and status of lidar projects on the Ontario Lidar Coverage map on the Ontario Elevation Mapping Program hub page.

Now also available through a web service which exposes the data for visualization, geoprocessing and limited download. The service is best accessed through the ArcGIS REST API, either directly or by setting up an ArcGIS server connection using the REST endpoint URL. The service draws using the Web Mercator projection.

For more information on what functionality is available and how to work with the service, read the Ontario Web Raster Services User Guide. If you have questions about how to use the service, email Geospatial Ontario (GEO) at geospatial@ontario.ca.

Service Endpoints

https://ws.geoservices.lrc.gov.on.ca/arcgis5/rest/services/Elevation/Ontario_DTM_LidarDerived/ImageServer https://intra.ws.geoservices.lrc.gov.on.ca/arcgis5/rest/services/Elevation/Ontario_DTM_LidarDerived/ImageServer (Government of Ontario Internal Users)

Additional Documentation

Ontario DTM (Lidar-Derived) - User Guide (DOCX)

OMAFRA Lidar 2016-2018 -Cochrane-Additional Contractor Metadata (PDF) OMAFRA Lidar 2016-2018 -Peterborough-AdditionalContractorMetadata (PDF) OMAFRA Lidar 2016-2018 -Lake Erie-AdditionalContractorMetadata (PDF) CLOCA Lidar 2018 - Additional Contractor Metadata (PDF) South Nation Lidar 2018-19 - Additional Contractor Metadata (PDF) OMAFRA Lidar 2022 - Lake Huron - Additional Contractor Metadata (PDF) OMAFRA Lidar 2022 - Lake Simcoe - Additional Contractor Metadata (PDF) Huron-Georgian Lidar 2022-23 - Additional Contractor Metadata (Word) Kawartha Lakes Lidar 2023 - Additional Contractor Metadata (Word) Sault Ste Marie Lidar 2023-24 - Additional Contractor Metadata (Word) Thunder Bay Lidar 2023-24 - Additional Contractor Metadata (Word) Timmins Lidar 2024 - Additional Contractor Metadata (Word)

Ontario DTM (Lidar-Derived) - Tile Index (SHP) Ontario Lidar Project Extents (SHP)

OMAFRA Lidar DTM 2016-2018 -Cochrane- Breaklines (SHP) OMAFRA Lidar DTM 2016-2018 -Peterborough-Breaklines (SHP) OMAFRA Lidar DTM 2016-2018 -Lake Erie-Breaklines (SHP) CLOCA Lidar DTM 2018-Breaklines (SHP) South Nation Lidar DTM 2018-19-Breaklines (SHP) Ottawa-Gatineau Lidar DTM 2019-20 - Breaklines (SHP) OMAFRA Lidar DTM 2022 - Lake Huron - Breaklines (SHP) OMAFRA Lidar DTM 2022 - Lake Simcoe - Breaklines (SHP) Eastern Ontario Lidar DTM 2021-22 - Breaklines (SHP) Muskoka Lidar DTM 2018 - Breaklines CGVD2013 (SHP) / CGVD28 (SHP) Muskoka Lidar DTM 2021 - Breaklines CGVD2013 (SHP) / CGVD28 (SHP) Muskoka Lidar DTM 2023 - Breaklines CGVD2013 (SHP) / CGVD28 (SHP) DEDSFM Huron-Georgian Bay 2022-23 - Breaklines (SHP) DEDSFM Kawartha Lakes 2023 - Breaklines (SHP) DEDSFM Sault Ste Marie 2023-24- UTM16 - Breaklines (SHP) DEDSFM Sault Ste Marie 2023-24- UTM17 - Breaklines (SHP) DEDSFM Sudbury 2023-24 - Breaklines (SHP) DEDSFM Thunder Bay 2023-24 - Breaklines (SHP) DEDSFM Timmins 2024 - Breaklines (SHP)

Product PackagesDownload links for the Ontario DTM (Lidar-Derived) (Word) Projects: LEAP 2009 GTA 2014-18 OMAFRA 2016-18 CLOCA 2018 South Nation CA 2018-19 Muskoka 2018-23 York-Lake Simcoe 2019 Ottawa River 2019-20 Ottawa-Gatineau 2019-20 Lake Nipissing 2020 Hamilton-Niagara 2021 Huron Shores 2021 Eastern Ontario 2021-22 OMAFRA Lake Huron 2022 OMAFRA Lake Simcoe 2022 Belleville 2022 Digital Elevation Data to Support Flood Mapping 2022-26

Huron-Georgian Bay 2022-23 Kawartha Lakes 2023 Sault Ste Marie 2023-24 Sudbury 2023-24 Thunder Bay 2023-24 Timmins 2024

Greater Toronto Area Lidar 2023

Status On going: Data is continually being updated

Maintenance and Update Frequency As needed: Data is updated as deemed necessary

Contact Ontario Ministry of Natural Resources - Geospatial Ontario,geospatial@ontario.ca

Click to view MetadataThe Intake Protection Zone is the 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. The IPZ-1 is the FIRST ZONE around an intake, and is very vulnerable to contamination. Direct and immediate impacts are possible as there is no time to take mitigating action.NOTE: IPZ-1 features were not combined resulting in overlapping IPZ-1 features for the Oshawa Water System.

Click to view Metadata Functional Natural Heritage System (FNHS) is a series of overlays of valued natural system components. Many of these components have been derived from CLOCA's Ecological Land Classification (ELC) mapping.Developing the Natural Heritage SystemFNHS components:a) Core Habitat Areas and Corridors:Core Habitat Areas: Although virtually all vegetated areas provide some habitat for wildlife, there are some habitats that can be considered “core” because they are able to provide for a large suite of wildlife or support sensitive wildlife species. Deciding which habitats should be considered core habitats is a somewhat subjective exercise depending on the species being considered, but for the purposes of defining a FNHS, the designation of core habitat areas has been made using the following criteria:• Size - the physical size of the habitat being measured. Larger sized habitats are preferable to smaller sized habitats. • Shape - refers to the geometric shape of the habitat being measured. Compact habitat patches (e.g. square or circular) are preferable to linear (e.g. rectangular) patches as they have fewer edges. • Juxtaposition - the position of the habitat on the landscape relative to other features such as settled areas or natural areas. Natural areas adjacent to other natural areas are preferred over natural areas adjacent to urban development. • Representation - the range of a specific habitat type in the watershed. A high diversity of well-distributed habitat types is preferable. • Multiple Function - the ability of a habitat to provide more than one function for local wildlife communities. • Species at Risk - refers to the ability of a habitat patch to support species at risk as identified by the Committee on the Status of Wildlife in Canada (COSEWIC) and the Committee on the Status of Species at Risk in Ontario (COSSARO).Habitat size and shape are important factors for any habitat, however in forests, size and shape are particularly important because they determine the amount of forest interior (100 m from forest edge) and deep forest interior (200 m from forest edge) that may be present. Forest interior is a prerequisite for many breeding birds as it provides increased protection from wind, light, nest parasitism and predation.As human development approaches and in some cases surrounds wildlife habitats, the effects of noise, light, disturbance from recreation or pets, and other stressors are increased. Consequently, species that are sensitive to disturbance are less likely to occupy these habitats even if they meet their needs for food or cover, and the result is a loss in overall biodiversity. Habitat size, shape and juxtaposition were evaluated using the LAM.Representation and multiple function have been assessed using ELC. Because wildlife have varying needs, and some have very specific needs, a wide variety of habitats must exist within a watershed to support biodiversity. Representation is not limited to broad habitats such as forests and wetlands; it includes types of forests as well as types of wetlands.The evaluation of habitats for species at risk within the CLOCA jurisdiction is done using information from the Natural Heritage Information Centre (NHIC), from data collected through field work, external documents, or Environmental Impact Studies, and from data reported to the Authority by the public.Corridors:Animals are not stationary. Species have a tendency to move between habitats to fulfill dietary or lifecycle needs, seek refuge, and escape predation, so connectivity between habitat patches is important for maintaining wildlife populations. At a broader scale, connectivity enables animal migration, which is integral to maintaining genetic diversity and facilitating the repopulation of habitats after local extinction events.Because corridors serve a number of functions and operate at varying scales, they can be categorized in the following manner: • Regional CorridorsThese are major movement corridors which connect a number of watersheds at a large landscape scale. Regional corridors are often comprised of upland areas since they exist across watershed divides and they are connected via large habitat patches. Examples of Regional Corridors include the Oak Ridges Moraine and Lake Iroquois Shoreline.• Landscape CorridorsThese are major movement routes within the watersheds that connect core areas and/or are robust enough to be sustainable as habitat units themselves. They typically follow linear features such as creeks and valleys, and can be composed of a series of independent habitats that allow wildlife to “hopscotch” across the landscape. Landscape corridors should be at least 100 metres in width. (Environment Canada, 2004)• Local CorridorsThese are minor movement routes within the watershed that help to connect habitat patches into a continuous series. They are often associated with creek valleys and typically function at a sub-watershed scale. They function with landscape corridors to connect the smaller habitats to the larger ones. Local corridors are 60 metres in width.b) Riparian Corridors:In order to protect/enhance the thermal regime of the watercourses in the CLOCA jurisdiction a minimum 30-metre buffer from the wetted width of either side of a watercourse is required. Watercourses can be permanent, intermittent and ephemeral. The 30-metre buffer requirement is well documented in and supports the goals, objectives and recommendations of the Central Lake Ontario Fisheries Management Plan.c) Species At Risk (SAR) Riparian Corridors:SAR riparian corridors are required to protect the reaches of watercourses that provide habitat for the provincially endangered Redside Dace. Currently within the CLOCA jurisdiction Redside Dace occurs only in reaches of the Lynde Creek Watershed, however ongoing watershed monitoring occurs across the jurisdiction for this species. In keeping with the recovery strategy in development for Redside Dace, a buffer of the meander belt plus 30-metres on either side of the wetted width of the watercourse is required. Buffers are applied to reaches of permanent and intermittent watercourses where habitat for Redside Dace occurs or has been known to occur historically.d) Wetlands >/= 0.5ha:Existing wetlands in CLOCA watersheds occasionally fall short of the 10%/watershed target suggested in Environment Canada's “How Much Habitat is Enough?” AOC Guidelines of 10%/watershed. The guidelines also recommend restoration of wetland habitat to mirror historical percentages. As such, it has been determined that all wetlands are valued and should be considered in the development of the FNHS. Since ELC at the Community Series level of detail identifies 0.5ha polygons as the smallest units mappable, 0.5ha is the smallest wetland considered for incorporation into the FNHS.e) Woodlands >/= 0.5ha:Existing woodlands in CLOCA watersheds generally fall short of targets suggested in Environment Canada's “How Much Habitat is Enough?” AOC Guidelines of 30%/watershed. As such, it has been determined that all woodlands are valued and should be considered in the development of the FNHS. Since ELC at the Community Series level of detail identifies 0.5ha polygons as the smallest units mappable, 0.5ha is the smallest woodland considered for incorporation into the FNHS.f) Provincially Significant Wetlands (PSWs):PSWs have been designated by the Ministry of Natural Resources and are protected features under provincial policies including the Provincial Policy Statement, The Oak Ridges Moranine Conservation Plan and the Greenbelt Plan. While already protected by policy, PSWs are also important biological features and therefore warrant inclusion into the FNHS mapping.g) Areas of Natural and Scientific Interest (ANSIs):ANSIs have been designated by the Ministry of Natural Resources and are protected features under provincial policies including the Provincial Policy Statement, The Oak Ridges Moraine Conservation Plan and the Greenbelt Plan. While already protected by policy, ANSIs are also important biological and physiographical features and therefore warrant inclusion into the FNHS mapping.

Zoom in on the map above and click your area of interest or use the Tile Index linked below to determine which package(s) you require for download.

The DSM data is available in the form of 1-km by 1-km non-overlapping tiles grouped into packages for download. This dataset is a compilation of lidar data from multiple acquisition projects, as such specifications, parameters and sensors may vary by project. See the detailed User Guide linked below for additional information.

You can monitor the availability and status of lidar projects on the Ontario Lidar Coverage map on the Ontario Elevation Mapping Program hub page.

Now also available through a web service which exposes the data for visualization, geoprocessing and limited download. The service is best accessed through the ArcGIS REST API, either directly or by setting up an ArcGIS server connection using the REST endpoint URL. The service draws using the Web Mercator projection.

For more information on what functionality is available and how to work with the service, read the Ontario Web Raster Services User Guide. If you have questions about how to use the service, email Geospatial Ontario (GEO) at geo@ontario.ca.

Service Endpoints

https://ws.geoservices.lrc.gov.on.ca/arcgis5/rest/services/Elevation/Ontario_DSM_LidarDerived/ImageServer https://intra.ws.geoservices.lrc.gov.on.ca/arcgis5/rest/services/Elevation/Ontario_DSM_LidarDerived/ImageServer (Government of Ontario Internal Users)

Additional Documentation

Ontario DSM (Lidar-Derived) - User Guide (DOCX)

OMAFRA Lidar 2016-2018 - Cochrane - Additional Contractor Metadata (PDF) OMAFRA Lidar 2016-2018 - Peterborough - Additional Contractor Metadata (PDF) OMAFRA Lidar 2016-2018 - Lake Erie - Additional Contractor Metadata (PDF) CLOCA Lidar 2018 - Additional Contractor Metadata (PDF) South Nation Lidar 2018-19 - Additional Contractor Metadata (PDF) OMAFRA Lidar 2022 - Lake Huron - Additional Contractor Metadata (PDF) OMAFRA Lidar 2022 - Lake Simcoe - Additional Contractor Metadata (PDF) Huron-Georgian Bay Lidar 2022-23 - Additional Contractor Metadata (Word)

Ontario DSM (Lidar-Derived) - Tile Index (SHP)

Ontario Lidar Project Extents (SHP)

Product Packages

Download links for the Ontario DSM (Lidar-Derived) (Word) Projects:

LEAP 2009 GTA 2014-18 OMAFRA 2016-18 CLOCA 2018 South Nation CA 2018-19 Muskoka 2018-23 York-Lake Simcoe 2019 Ottawa River 2019-20 Ottawa-Gatineau 2019-20 Lake Nipissing 2020 Hamilton-Niagara 2021 Huron Shores 2021 Eastern Ontario 2021-22 OMAFRA Lake Huron 2022 OMAFRA Lake Simcoe 2022 Belleville 2022 Digital Elevation Data to Support Flood Mapping 2022-26

Huron-Georgian Bay 2022-23 Kawartha Lakes 2023 Sault Ste Marie 2023-24 Sudbury 2023-24 Thunder Bay 2023-24 Timmins 2024

Greater Toronto Area Lidar 2023

Status On going: Data is continually being updated

Maintenance and Update Frequency As needed: Data is updated as deemed necessary

Contact Ontario Ministry of Natural Resources - Geospatial Ontario, geospatial@ontario.ca

Click to view Metadata The Clean Water Act, 2006 legislation requires watershed boundaries for both Source Water Protection Regions (SPR's) and Source Water Protection Authorities (SPA’s). This layer defines the jurisdictional boundary for the Central Lake Ontario Source Protection Authority. The boundary were created using a 'scientific' watershed delineation approach that drew upon a hybrid of data sources.