| Flood Extent Polygons – Predicted Climate Change |
Data purpose: To provide awareness of areas at risk of flooding. Support improved decision-making for activities and development in flood prone areas and reduce the cost and impact of flood events.
Data description: The New Brunswick Flood Hazard Polygons display inland and coastal flood hazard areas for New Brunswick and includes both the current and the projected conditions by the year 2100.
The New Brunswick Flood Hazard Maps present a series of flood hazard maps for the province of New Brunswick. The maps outline the predicted location, frequency and extent of coastal and inland flooding in New Brunswick and incorporate the future impacts of climate change.
Flood events are usually expressed in terms of a return period or an Annual Exceedance Probability (AEP). The return period or the AEP gives the likelihood that a flood event could occur in any given year, and so helps estimate how often an area will be impacted by flooding.
Flood extent mapping in New Brunswick delineates a zone where floods have a 5% chance of occurring in any year (5% AEP or 20-year return period) and a zone where floods have a 1% chance of occurring in any year (1% AEP or 100-year return period).
This dataset is comprised of five layers:- Present Day Flood, 1 in 20 year
- Present Day Flood, 1 in 100 year
- 2100 Flood with Climate Change, 1 in 20 year
- 2100 Flood with Climate Change, 1 in 100 year
- 2100 Higher High Water Large Tide (HHWLT)
Restriction on use: Unrestricted
License: Open Government Licence
Georeferencing: datum - NAD83(CSRS), map projection - NB Stereographic Double, (EPSG 2953)
Data formats: ESRI file geodatabase, ESRI shape file
Data coverage and size: 314 mb
Responsible Agency: Department of Environment and Local Government
