Inland lakes and streams – physical conditions

This data set includes information on sampling locations and physical conditions in lakes and streams across Ontario. It also includes meteorological conditions from monitoring stations in south-central Ontario.


The data for lakes includes sampling location details and measurements such as:

  • temperature
  • dissolved oxygen levels
  • water transparency


The data for streams includes measurements such as stream flow discharge from monitoring stations in south-central Ontario.

Meteorological conditions

This dataset contains meteorological conditions for climate stations close to monitored lakes in south-central Ontario. It includes measurements such as:

  • air temperature
  • humidity
  • precipitation
  • wind speed

Data were collected since 1976 as part of routine monitoring of water quality of inland waters and for scientific and research purposes.

For more information


Data Available

The data described here is available for you to use. [Learn more]
[See the licence for how you're allowed to use this data.]

1976 - 2019

Supporting Files

Additional Info

Field Value
Geographic coverage Ontario
Geography Breakdown None
Source URL/Address
Author Email
Maintainer branch Environmental Monitoring and Reporting Branch
Last Validated Date 2021-05-28
Update frequency Yearly
Access instructions