Ontario low water conditions

Low water information last updated:

Current conditions map

Confirmed low water conditions in Ontario

Current Conditions Map

View current conditions map

Historical conditions summary

Highest confirmed monthly level with downloadable data

Historical Conditions Map

View historical conditions map

Low water definitions

  • Low Water Level 1: early indication of a potential drought condition.
  • Low Water Level 2: increased likelihood of drought conditions.
  • Low Water Level 3: high likelihood of drought conditions (does not imply an emergency).

Provincial conditions reports and indicators

Conditions report (ZIP)

Summarizes short, medium and long-term flow and precipitation conditions by region over the last 5 years.

Indicator maps (ZIP)

Summarizes short, medium, and long-term precipitation and stream flow by region over the last 5 years.

Indicator graphs (ZIP)

Summarizes precipitation and stream flow indicator statistics for select stations.


Some of the information in this website may not be compatible with assistive technologies because it is considered unconvertible or has not yet been made accessible. If you need any of the information in an alternate format, please contact the Natural Resource Information Centre.

Who to contact for low water information

Your local Conservation Authority may also provide local drought messaging.

Your local municipality is responsible for on-the-ground response.

If you live in a community that is not serviced by a conservation authority, any low water conditions in your area are issued by the nearest Ministry of Natural Resources and Forestry district office.