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NSW Flood Data Portal

Flood study

Lower Clarence River Flood Study Review (Vol 1)

This study examines and defines the flood behaviour of the Lower Clarence River from Mountain View (approximately 10km upstream of Grafton) to the ocean outlet at Yamba. The study area includes the entire floodplain downstream of Mountain View, including all of the branches and tributaries of the Clarence River, as well as the Broadwater near Maclean and Wooloweyah Lagoon, south of Yamba.

The primary objective of the study is to define flood behaviour in the Lower Clarence River floodplain for a full range of flood events under existing catchment floodplain conditions. The events include the 5 year, 20 year, 100 year, 500 year ARI (Average Recurrence Interval) and the PMF. This study may form the basis for subsequent floodplain risk management studies and plans for the entire Lower Clarence River floodplain. Detailed assessment of flood mitigation options and measures may be undertaken as part of any subsequent studies.

Additional Information

Field Value
Title Lower Clarence River Flood Study Review (Vol 1)
Publication Date 1 January 2003
Themes Land and Resource Management
Spatial Extent
© OpenStreetMap contributors
Council/LGA Clarence Valley Council
Author/ Prepared by WBM Oceanics Australia
Publish date 27 June 2019
Update date 28 June 2019
Approval State Approved
Submitted for approval 27 June 2019
Submitted by Akhil Sud
Approved 29 June 2019
Approved by dstazic
Identifier 311542c7-d0de-462e-a21a-f47fc103cded