Conservation Halton (CH) has…

Conservation Halton (CH) has reviewed the draft Technical Bulletin – Flooding Hazards: Data Survey and Mapping Specifications posted on the Environmental Registry of Ontario (ERO number 019-4706). We had an opportunity to contribute to Conservation Ontario’s submission and offer our key comments below and additional comments in Appendix A.

CH is generally supportive of the bulletin’s technical guidance and recommendations, which will be an important resource for flood hazard mapping practitioners.

The draft Bulletin focuses on data requirements to support 1D hydraulic modeling and the subsequent mapping. A key recommendation would be to expand the Bulletin to include similar guidance for data required to support 2D hydraulic modeling of floodplains and spills as well as the mapping of modelled spills. We also recommend the Province consider incorporating the important role of public outreach and stakeholder input for larger studies.

Thank you for the opportunity to provide input on the draft Technical Bulletin – Flooding Hazards: Data Survey and Mapping Specifications.