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NSW Flood Data Portal

Visual Levee Audits

Audit of Flood Levees for NSW - Town of Coonamble

The town of Coonamble on the Castlereagh River in New South Wales has a population of about 1200. It is protected from flooding by a ring levee with a total length of approximately 73cm. Included in the levee system are 2 reinforced concrete retaining walls located north and south of the Aberford Street bridge. Total length of the retaining walls is 1,710 metres.

The levee was originally constructed in 1975 to a design level as produced by a combination of the 1955 flood in Warrena Creek and the 1974 flood on the Castlereagh river, plus 0.6m free board.

The audit is designed to appraise the flood security and structural adequacy of the levee system at Coonamble. This report presents the results of that audit and consists of a visual appraisal of the levee and materials, assessment of the water retention capacity of the levee, research of flood records and an appraisal of the cost of corrective action and the extent of such action.

Additional Information

Field Value
Title Audit of Flood Levees for NSW - Town of Coonamble
River Basin 420 - Castlereagh
Publication Date 1 December 1992
Themes Land and Resource Management
Spatial Extent
© OpenStreetMap contributors
Council/LGA Coonamble Shire Council
Author/ Prepared by NSW Public Works
Publish date 25 June 2020
Update date 25 June 2020
Approval State Approved
Submitted for approval 25 June 2020
Submitted by Julia Muniz de Miranda Sa
Approved 26 June 2020
Approved by dstazic
Identifier fcffba4f-a542-4cb1-9d27-22ee6a594a71