Sackville Rivers Floodplain Study

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GHD was engaged by the Halifax Regional Municipality in Canada to update floodplain maps of the Sackville River and Little Sackville River.

Historically, flood-related risks within the lower reaches of the Sackville River in Nova Scotia, Canada, have been a significant issue. Continued urbanization and changing climate have been contributing to the increasing frequency of flooding in the watershed.

A historical review of flooding factors identified the major processes that cause flood events in the watershed.

Extreme rainfall events that have affected the watershed were analyzed to characterize the hydrologic response of the watershed. GHD performed a non-stationary frequency analysis to account for trends in streamflow and sea level due to climate change. Joint probability analysis investigated the relationship between floods and sea level. Hydraulic modelling was used to determine areas prone to flooding and/or impacted by rising sea level.

Climate Change


GHD’s approach is to deliver integrated services in the key areas of hazards assessment, mitigation, adaptation, energy efficiency and trading and carbon offsets. Our teams work with organisations to identify and understand both the strategic risk and opportunity presented by possible long-term global impacts.

We understand the importance of taking early action and positioning organisations to manage and respond to potential future changes in climate. Our people, made up of engineers, applied scientists, risk professionals, modellers, economists and social strategists deliver comprehensive climate risk, energy and greenhouse gas management services to enable efficient and sustainable business practices.

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Waterways & Coastal


Today, GHD has one of Australia’s largest groups of dedicated water management professionals. We provide leading technical support for the study and management of all forms of waterways, including rivers, lakes, estuaries and coastal areas.

GHD’s Waterways & Coastal offering service line covers background and baseline studies, strategic and planning studies, and impact assessments. We can work with you on all stages of the feasibility and design process through to the supervision of construction projects with respect to waterways and developments affecting waterways.

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