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Open data is defined as structured data that is machine-readable, freely shared, used and built on without restrictions.

The key things to remember about open data are:

  • #Availability and access#: the data must be available as a whole and at no more than a reasonable reproduction cost, preferably by downloading over the internet. The data must also be available in a convenient and modifiable form.
  • #Re-use and redistribution#: the data must be provided under terms that permit re-use and redistribution including the intermixing with other datasets.
  • #Universal participation#: everyone must be able to use, re-use and redistribute. There should be no discrimination against fields of endeavour or against persons or groups. For example, 'non-commercial' restrictions that would prevent 'commercial' use, or restrictions of use for certain purposes (e.g. only in education), are not allowed.
47510 records
Provincial / Territorial

Companies or organizations who take over 50,000 litres of water/day from a lake, river, stream or groundwater source, must obtain …

Record Modified: Mar 18, 2026
Record Released: Nov 27, 2020
Publisher: Government of Ontario
Formats: HTML PDF SHP XLS
Keywords: Economy and Business Environment and Natural Resources Environment and energy PTTW water management environment water permit to take water water supply watershed source water protection Government information
Provincial / Territorial

The data is used to create reference and thematic maps The Special Needs Strategy was launched in February 2014 to …

Record Modified: Mar 18, 2026
Record Released: Nov 27, 2020
Publisher: Government of Ontario
Formats: HTML XLS ZIP
Keywords: Housing Communities and Social Support Government Government information

In 2013, the Ontario Ministry of the Environment, Conservation and Parks initiated an integrated baseline environmental data collection program in …

Record Modified: Mar 18, 2026
Record Released: Aug 20, 2025
Publisher: Government of Ontario
Formats: HTML PDF ZIP
Keywords: environmental monitoring water quality groundwater air quality vegetation Government information

This data breaks down estimated hunter and harvest numbers by: * wildlife management unit (WMU) * calendar year Harvest and …

Record Modified: Mar 18, 2026
Record Released: Nov 27, 2020
Publisher: Government of Ontario
Formats: CSV HTML XLS
Keywords: Economy and Business Environment and Natural Resources Environment and energy Government information

The data contains the following mapping layers from the Oak Ridges Moraine Conservation Plan: * Oak Ridges Moraine Conservation Plan …

Record Modified: Mar 18, 2026
Record Released: Jan 27, 2021
Publisher: Government of Ontario
Formats: HTML ZIP Other ESRI REST
Keywords: Housing Communities and Social Support Environment and energy Government information

This data set includes information on sampling locations, water chemistry and chlorophyll collected at 18 locations in the Great Lakes-St. …

Record Modified: Mar 18, 2026
Record Released: Nov 27, 2020
Publisher: Government of Ontario
Formats: HTML PDF XLS
Keywords: Environment and Natural Resources Environment and energy great lakes Lake Simcoe water quality monitoring drinking water drinking water intakes nearshore nutrients chlorophyll algae ...
Provincial / Territorial

The Multi-Watershed Nutrient Study collected stream water samples from 11 small agricultural watersheds between 2014 and 2020. Samples were collected …

Record Modified: Mar 18, 2026
Record Released: Feb 18, 2026
Publisher: Government of Ontario
Formats: CSV HTML PDF SHP ZIP
Keywords: water Government information
Provincial / Territorial

The Ontario Railway Network (ORWN) is seven data classes that use the federal GEOBASE standard for the National Railway Network …

Record Modified: Mar 18, 2026
Record Released: Nov 27, 2020
Publisher: Government of Ontario
Formats: HTML ZIP Other
Keywords: Infrastructure and Transportation Government information

This data breaks down estimated hunter and harvest numbers by: * wildlife management unit (WMU) * calendar year Harvest and …

Record Modified: Mar 18, 2026
Record Released: Nov 27, 2020
Publisher: Government of Ontario
Formats: CSV HTML XLS
Keywords: Economy and Business Environment and Natural Resources Environment and energy Government information

This data breaks down estimated hunters as well as antlered, antlerless and total harvest numbers by: * wildlife management unit …

Record Modified: Mar 18, 2026
Record Released: Nov 27, 2020
Publisher: Government of Ontario
Formats: CSV HTML XLS
Keywords: Economy and Business Environment and Natural Resources Environment and energy Government information