Name: 1% Flood Extents - Gosford Coastal Lagoons - OFS 2020

Display Field: WATERWAY_NAME

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Description: NSW government’s professional specialist advisor, Manly Hydraulics Laboratory (MHL) werecommissioned by Central Coast Council (CCC) to undertake a flood study for the four coastallagoons along CCC’s local government area (LGA). These lagoons are Wamberal Lagoon,Terrigal Lagoon, Avoca Lagoon and Cockrone Lake.The Study has been prepared in accordancewith the New South Wales Government’s Floodplain Development Manual (2005).The flood extents were filtered to remove shallow depths area generated by the direct rainfallmethodology. The criteria used to filter these shallow depths consisted of keeping areaswhere:• Depth > 0.10 m; OR• Depth > 0.05 m AND Velocity x Depth > 0.025 m2/s; OR• Velocity > 2 m/sFurther to these criteria, “puddles” of less than 100m2 were also removed from the extent.

Service Item Id: bddb71def19644839166f28634816c02

Copyright Text: Manly Hydraulics Laboratory and Central Coast Council

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Spatial Reference: 28356  (28356)  LatestVCSWkid(0)

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Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• WATERWAY_NAME ( type: esriFieldTypeString, alias: Water Way Name, length: 80 )
• REFERENCE_DOCUMENT ( type: esriFieldTypeString, alias: Study Name, length: 80 )
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