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  • Polygon features representing 'declared' or otherwise delineated floodways. Declared floodways are a legally defined area subject to flooding, documented through the municipal planning schemes. Floodways are typically areas of low lying land close to rivers that are prone to flooding. They may include natural or modified depressions and intermittent lakes. . This layer superceedes floodway25

  • This group of layers contains line features delineating modelled statistical flood heights. This data is also refered to as flood height contours. The value {n} represent the 'annual recurrence interval' in years. For example CONTOUR_100Y_ARI are heights for 1 in 100 year floods. For actual recorded flood heights refer to HISTORIC_CONTOUR layer. Current statistical flood height contour layers include 5, 10, 20, 50, 100, 200, 500 year intervals, each in a seperate dataset. This data is used in conjunction with flood extents of a corresponding ARI, eg CONTOUR_100Y_ARI is used with EXTENT_100Y_ARI. The data is statistically derived using hydrological models, historic flood extents and heights.

  • This group of layers contains line features delineating modelled statistical flood heights. This data is also refered to as flood height contours. The value {n} represent the 'annual recurrence interval' in years. For example CONTOUR_100Y_ARI are heights for 1 in 100 year floods. For actual recorded flood heights refer to HISTORIC_CONTOUR layer. Current statistical flood height contour layers include 5, 10, 20, 50, 100, 200, 500 year intervals, each in a seperate dataset. This data is used in conjunction with flood extents of a corresponding ARI, eg CONTOUR_100Y_ARI is used with EXTENT_100Y_ARI. The data is statistically derived using hydrological models, historic flood extents and heights.

  • This group of layers contains line features delineating modelled statistical flood heights. This data is also refered to as flood height contours. The value {n} represent the 'annual recurrence interval' in years. For example CONTOUR_100Y_ARI are heights for 1 in 100 year floods. For actual recorded flood heights refer to HISTORIC_CONTOUR layer. Current statistical flood height contour layers include 5, 10, 20, 50, 100, 200, 500 year intervals, each in a seperate dataset. This data is used in conjunction with flood extents of a corresponding ARI, eg CONTOUR_100Y_ARI is used with EXTENT_100Y_ARI. The data is statistically derived using hydrological models, historic flood extents and heights.

  • Point features delineating observed and interpreted flood heights, derived from observations during flood events as well as flood mapping projects. It shows recorded flood heights from 1870 to present. It is used in conjunction with historic flood extents and contours. The height captured is the height in metres above the AHD of flood levels reached. Note, this data does NOT represent flood water depth. The data is coded with date of observation (actual flood time and date).

  • This group of layers contains line features delineating modelled statistical flood heights. This data is also refered to as flood height contours. The value {n} represent the 'annual recurrence interval' in years. For example CONTOUR_100Y_ARI are heights for 1 in 100 year floods. For actual recorded flood heights refer to HISTORIC_CONTOUR layer. Current statistical flood height contour layers include 5, 10, 20, 50, 100, 200, 500 year intervals, each in a seperate dataset. This data is used in conjunction with flood extents of a corresponding ARI, eg CONTOUR_100Y_ARI is used with EXTENT_100Y_ARI. The data is statistically derived using hydrological models, historic flood extents and heights.

  • Shows recorded extents of historic flood events from 1870 to present. Polygons are coded with the date of the event, usually at its peak Each flood event is also available as a seperate layer, as some areas overlap if flooded more than once. It is designed to accommodate Victoria wide studies of all historic floods, also contains data which has been captured with an unknown date. Has been updated with major floods of 2011 and 2012.

  • This group of layers contains line features delineating modelled statistical flood heights. This data is also refered to as flood height contours. The value {n} represent the 'annual recurrence interval' in years. For example CONTOUR_100Y_ARI are heights for 1 in 100 year floods. For actual recorded flood heights refer to HISTORIC_CONTOUR layer. Current statistical flood height contour layers include 5, 10, 20, 50, 100, 200, 500 year intervals, each in a seperate dataset. This data is used in conjunction with flood extents of a corresponding ARI, eg CONTOUR_100Y_ARI is used with EXTENT_100Y_ARI. The data is statistically derived using hydrological models, historic flood extents and heights.

  • This group of layers contains line features delineating modelled statistical flood heights. This data is also refered to as flood height contours. The value {n} represent the 'annual recurrence interval' in years. For example CONTOUR_100Y_ARI are heights for 1 in 100 year floods. For actual recorded flood heights refer to HISTORIC_CONTOUR layer. Current statistical flood height contour layers include 5, 10, 20, 50, 100, 200, 500 year intervals, each in a seperate dataset. This data is used in conjunction with flood extents of a corresponding ARI, eg CONTOUR_100Y_ARI is used with EXTENT_100Y_ARI. The data is statistically derived using hydrological models, historic flood extents and heights.

  • Line data (contours) delineating observed, modelled and interpreted flood heights for flood events. Events are coded with specific date the flood occurred and generally shows the extent of floodwaters at the peak of the flood. Note that flood extent polygons and point features including spot heights are in seperate layers.