Project Updates

Project 11

The Stage 2 report on Blockage of Hydraulic Structures has been released for industry comment. Hydraulic blockages can occur within a variety of structures including stormwater inlets and pipes, cross drainage structures, especially culverts and bridges, overland flow paths, drainage channels and waterways, dams and weirs. The principal areas of interest within this report are culverts and bridges as cross drainage structures and the inlets and pipes of urban drainage systems. The issues addressed within this report include:

  • Design of drainage systems
  • Evaluation of the performance of existing systems
  • Management of blockage

Blockage has been identified as an important aspect of drainage planning and design, but one that is little understood and often poorly managed. Blockage can have significant impacts on the drainage system and can lead to costly and sometimes dangerous impacts on the community. This report has followed on from Stage 1 of the project and has indicated recommended design guidance for the incorporation of blockage into the planning, design and management of drainage systems. Download Report

Project  6 and 7 – Losses and Baseflow

The Queensland Water Panel is giving a presentation on Projects 6 and 7 of the ARR revision. This seminar will cover the outcomes from:


The lack of guidance on design losses has long been regarded as one of the greatest weaknesses in the current edition of ARR. A pilot study has been completed involving 10 catchments (3 from Qld) which will inform the conceptual loss models and approach to be applied to a wider data set, which will ultimately underpin the new guidance in ARR.


Baseflow can potentially represent a significant contribution to smaller flood events. The baseflow characteristics were analysed for over 30,000 flood events from 230 catchments. Regional prediction equations have been developed to enable the estimation of baseflow for ungauged catchments across Australia and guidance provided on how to incorporate baseflow in design flood estimates.

The details are

Venue: Hawken Auditorium, Engineering House, 447 Upper Edward Street, Brisbane, QLD
Date: Wednesday, 20 February 2013
Time: 11:45am for 12 noon start
Cost: Free for EA Members/Students, $20 for Non-EA members – Light snacks and beverages will be provided

Project  15

Deadline for industry comment on Project 15 (2D modelling) is February 19th. Send you reviews to

Report Review Process

The Revision team is committed to producing a quality project for industry. As part of the revision process has been developed where reports are reviewed by the Technical Committee as well as Australian and International reviewers. The following reports are undergoing the detailed review process prior to release to the industry for comment and are expected to be released soon.
-Project 6 – Losses (Rural component)

General Updates

Call for Reviewers

Those interested in reviewing projects should email or briefly describing which projects they are interested in reviewing and what qualifications/experience they have in those practice areas.


Australian Rainfall and Runoff has joined LinkedIn. Join the group for discussions and updates on the revision of Australian Rainfall and Runoff.