Development is generally prohibited in the 1 in 100-year flood plain. The 1 in 100-year flood plain is also regulated by the Conservation Authorities and subject to regulations and policies under the Conservation Authorities Act. The location of the 1 in 100-year flood plain is identified in the flood plain overlay of the City of Ottawa Zoning By-law (Section 58). Regulatory event standards are defined by region and for Eastern Ontario it is the 1 in 100-year flood event. The Ministry of Northern Development, Mining, Natural Resources and Forestry defines the regulatory flood event standard for flood plain mapping. Useful resources for residents and property owners are available from the City of Ottawa and the Province of Ontario. Ensuring they have the appropriate insurance for their property.Adjustments to how belongings are stored in basements.This also helps build resiliency to future climate conditions. Property owners and residents can reference the flood plain maps to review the potential risks to their properties and take steps to protect them. Visit Conservation Ontario or your local Conservation Authority for more information on the role of conservation authorities. Flood forecasting and warning within their watershed.Implementing policies and requirements for flood proofing or flood protection where minor development is approved in a flood plain.Regulation of development in the hazard area or alterations to the watercourse.Inform emergency preparedness and response plansĬonservation Authorities use the maps to fulfill their mandates for:.Inform risk assessments and adaptation planning. Direct land use planning through the Official Plan and Zoning By-Law.The City of Ottawa uses flood plain mapping to: Flood plain mapping in the City of Ottawa The City, Conservation Authorities, and property owners all have a role to play in flood risk management. Effective hazard and risk management will often involve a combination of measures. This mapping is critical for the effective management of riverine flood risks through prevention/mitigation of risks, protection of people and property, and emergency preparedness and response planning. Flood plain mapping identifies the areas that may experience flooding due to rising water levels in a watercourse.
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