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Ontario Flow Assessment Techniques

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Provider

Ontario Ministry of Natural Resources

The Ontario Flow Assessment Techniques (OFAT) is a tool to automatically model natural flow regimes for ungauged watersheds in Ontario. These flow regimes include low flows, flood flows, mean annual flows, minimum instream flow requirements, interactive GIS-based software with accompanying databases used to automate the following three main processes associated with flow modelling:

  • Delineate a watershed of interest using a Digital Elevation Model (DEM).
  • Calculate and extract physiographic and climatic parameters pertaining to the watershed.
  • Execute various regional hydrologic models.

    • This tool was develped by using the stream network data created by Water Resources Information Project (MNR) and the Digital Elevation Model data of the Ontario Ministry of Natural Resources.

    OFAT has been developed in ArcView GIS with the Spatial Analyst Extension loaded, using Avenue object-oriented programming language.

    — Cited from the OFAT Brochure (PDF – 1.09mb)

    Citation

    Northeast Science and Information Section, Science and Information Branch. Ontario Ministry of Natural Resources. OFAT Ontario Flow Assessment Techniques Version 1.0. [Electronic Resource] Ontario Ministry of Natural Resources, 2002.

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    Contact

    519–824–4120 ext. 56417

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    The DRC is located behind the Research Help desk in the McLaughlin Library.

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    Last updated May 27th, 2011 by R.E.C. (details)