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Service Description: Map notes:North Esk & Tamar Flood Water Surface ProfilesFor use in Planning GeneralThese maps indicate North Esk derived flood levels from the Black Bridge to Corra Linn. The maximum flood levels below Hobblers Bridge and in the Tamar are determined by South Esk discharges into the Tamar which provide higher elevations than the North Esk discharges for the same Average Recurrence Interval (ARI).This map is primarily intended for use in planning to that end it includes:A 100 year ARI profile with current sea level conditionsA 100 year ARI profile with 800mm rise in sea levelA 200 year ARI profileDischargesHydro Consulting was commissioned to review the South Esk hydrology while the North Esk hydrology was derived by the University of New South Wales Water Research laboratory. The Table 1 indicates the results of latter study used in the construction of this map.Flood Return Period in Years ARINorth Esk Flood Discharges (UNSW WRL 2006)South Esk Discharges (Hydro Consulting 2008)1034514302041918105052623301006142910200710(Monte Carlo Range)1850 3430 39905008514630Table 1The adopted tail-water level used in the North Esk analysis for this map was 2.1 m AHD at the junction with the Tamar for all discharges. This represents the highest astronomical tide at Launceston with average atmospheric pressure and neutral wind conditions. The North Esk model was successfully calibrated to the flood which occurred on 30thAugust 2005 which peaked at 470 cumecs and the flood which occurred on 21stJune 2011 at 251 cumecs.

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Layers: Description: Map notes:North Esk & Tamar Flood Water Surface ProfilesFor use in Planning GeneralThese maps indicate North Esk derived flood levels from the Black Bridge to Corra Linn. The maximum flood levels below Hobblers Bridge and in the Tamar are determined by South Esk discharges into the Tamar which provide higher elevations than the North Esk discharges for the same Average Recurrence Interval (ARI).This map is primarily intended for use in planning to that end it includes:A 100 year ARI profile with current sea level conditionsA 100 year ARI profile with 800mm rise in sea levelA 200 year ARI profileDischargesHydro Consulting was commissioned to review the South Esk hydrology while the North Esk hydrology was derived by the University of New South Wales Water Research laboratory. The Table 1 indicates the results of latter study used in the construction of this map.Flood Return Period in Years ARINorth Esk Flood Discharges (UNSW WRL 2006)South Esk Discharges (Hydro Consulting 2008)1034514302041918105052623301006142910200710(Monte Carlo Range)1850 3430 39905008514630Table 1The adopted tail-water level used in the North Esk analysis for this map was 2.1 m AHD at the junction with the Tamar for all discharges. This represents the highest astronomical tide at Launceston with average atmospheric pressure and neutral wind conditions. The North Esk model was successfully calibrated to the flood which occurred on 30thAugust 2005 which peaked at 470 cumecs and the flood which occurred on 21stJune 2011 at 251 cumecs.

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Spatial Reference: 28355  (28355)


Single Fused Map Cache: false

Initial Extent: Full Extent: Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info: Supports Dynamic Layers: true

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 0

Max Scale: 0



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