Ontario Flow Assessment Tool (OFAT)

The Ontario Flow Assessment Tool (OFAT) is used to calculate information about Ontario’s watersheds. Watersheds are areas of land where surface water converges to a single point.

Water professionals in the public and private sectors and academia use OFAT to better understand water flow in Ontario. The general public use OFAT for educational or general interest purposes.

You can use the tool to:

  • create a map of a watershed
  • characterize the watershed
  • estimate stream flows

For more information

Provincial Mapping Unit  |  pmu@ontario.ca


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.]

2013-10-31 - 2020-09-04

Supporting Files

This dataset has no supporting files

Additional Info

Field Value
Geographic coverage Ontario
Geography Breakdown Watershed
Source URL/Address https://www.ontario.ca/page/watershed-flow-assessment-tool
Maintainer Provincial Mapping Unit
Author Email
Maintainer branch Mapping and Information Resources Branch
Last Validated Date 2021-06-07
Update frequency As required
Access instructions