Toronto and Region Conservation Authority’s (TRCA) Engineering Services department utilizes hydrologic and HEC-RAS hydraulic models to aid in enforcing policies and regulations intended to ensure that new developments are located outside of the flood risk area.
Hydrology/Hydrologic Modelling Reports
Don River Watershed
Don River Hydrology
Composed by Marshall Macklin Monaghan
Final Report, December 2018
Rouge River Watershed
Rouge River Hydrology Study
Composed by Wood Environmental & Infrastructure Solutions, a Divison of Wood Canada Limited
Final Report, September 2018
Humber River Watershed
Humber River Hydrology
Composed by Civica Infrastructure Inc.
Final Report, April 2018
Etobicoke Creek Watershed
Etobicoke Creek Hydrology
Composed by MMM Group Limited
Final Report, April 2013
Duffins Creek Watershed
Duffins Creek Hydrology
Composed by Aquafor Beech Limited
Final Report, February 2013
Flood Plain Mapping for East Humber River
Composed by R.J. Burnside & Associates Limited
Final Report, May 2012
Carruthers Creek Watershed
Carruthers Creek Watershed Hydrology
Composed by Cole Engineering
Final Report, October 2011
Mimico Creek Watershed
Mimico Creek Hydrologic
Composed by MMM Group Limited
Final Report, December 2009
Petticoat Creek Watershed
Petticoat Creek Watershed Hydrology
Composed by Greenland Consulting Engineers
Final Report, October 2006
Highland Creek Watershed
Highland Creek Hydrology
Composed by Aquafor Beech Limited
Final Report, December 2004
Frenchman’s Bay Watershed
Currently being developed.
Contact us for more information:
Engineering Services | Development and Engineering Services
(416) 661-6600
Flood Risk Assessments
Toronto and Region Conservation Authority Flood Risk Assessment and Ranking Project
Flood Risk Assessment and Ranking Report
Composed by IBI Group
Final Report, October 2019
Storm Reports
July 8, 2013 – Extreme Rainfall Event
Summary & Analysis Report
Submitted by AMEC Environment & Infrastructure
Final Report December 2014
August 19, 2005 – Storm Event
Summary of Rainfall Analysis
Submitted by Clarifica Water Resources and Environmental Solutions
Final Report June 2006
Case Studies
Communicating Flood Risk to Residents Living in Riverine Flood Vulnerable Areas
Prepared by Rhianydd Phillips, Flood Risk Management Coordinator
and Rehana Rajabali, MUDS, Associate Director, Engineering Services
Development and Engineering Services
Final Report September 1, 2020