Queensland Water Modelling Network Publications

(NEW) QWMN 2021 Evaluation Report

In 2021, the QWMN commissioned Aither to develop its first Evaluation Report building upon the General Assessment undertaken by Alluvium. The annual Evaluation Reports will help ensure that the QWMN makes best use of its limited resources, and achieves its desired outcomes and associated benefits.

Aither’s evaluation found QWMN was achieving short-term outcomes by effectively addressing clear and ongoing Queensland Government needs and that QWMN was also well-placed to achieve its long-term outcomes and vision. The report identified several opportunities to improve program delivery and impact.

For more information: QWMN 2021 Evaluation Report (PDF, 1.7MB)

(NEW) QWMN Wetland Hydrology Model Review Sep 2021

This project provided a critical analysis of hydrology models relevant to wetland environments with particular focus on the role of nitrogen and associated processes. The suitability of different models that simulate the ability of wetlands to mitigate pollution, particularly nitrogen, in downstream receiving waters was evaluated. Reliable and defensible models may be used to document and demonstrate environmental licence and water quality offset requirements. The document presents strengths and weaknesses in the treatment of the nitrogen process by existing models as they pertain to scale, process, landscape form, cost, availability, etc. and identifies any significant/critical gaps.

For more information: QWMN 2021 Wetland Hydrology Model Review (PDF, 8.3MB)

Queensland Water Modelling Network Strategic Review of Models Suite

The QWMN’s 2018-2020 Research, Development and Innovation Strategy identified the need to conduct a strategic review of water models to help guide investment and effort in water modelling over the next five years (2020-2025). The Strategy further noted that investment in water modelling would benefit from an objective, transparent and adaptive process for evaluating water models and identifying key challenges, opportunities and risks for future model development and application. QWMN engaged BMT, The University of Queensland and The University of Western Australia to carry out the strategic review including the development of an approach to classify models and a framework for assessment.

Discussion paper: The different experiences of groundwater modellers and end users (PDF, 714.7KB)

Randall Cox prepared this discussion paper for the QWMN with a view to increasing the use of groundwater models in informing policy, program, and regulatory domains. It does this by prompting discussion about the interaction between groundwater modellers and the end users of the models. This paper could also be used to stimulate discussion in other modelling contexts as the issues raised extend beyond groundwater modelling.

Alluvium review of existing bank erosion models and options report (PDF, 1.4MB)

Alluvium Consulting Australia Pty Ltd investigated and assessed options and opportunities for stream bank erosion modelling within the Great Barrier Reef (GBR) catchments. This study investigated a range of stream bank erosion modelling approaches and assessed their applicability to GBR catchment streams.

This report assessed four different stream bank erosion prediction approaches:

  • The Dynamic SedNet stream bank erosion model
  • Bank Assessment of Non-point Source Consequence of Sediment approach (BANCS)
  • The Bank Stability and Toe Erosion Model (BSTEM)
  • Stream type based approach and multi-temporal analysis

For each model an overview is provided, along with examples of application, limitations and research opportunities within the context of stream bank erosion prediction in the GBR catchments.

Review of river reach case studies and Dynamic SedNet model parameterisation (PDF, 16.4MB)

A key finding of the Alluvium Review of existing stream bank erosion models and options report highlighted the difficulty in accurately predicting stream bank erosion in all river typologies that exist within Great Barrier Reef catchments. In response, a follow-on project by Alluvium explored the accuracy and parameterisation of the Dynamic SedNet model currently used within the Paddock to Reef program in a range of different river types.

Addressing uncertainty in catchment models using machine learning techniques (PDF, 7.2MB)

BMT Commercial Australia, in collaboration with The University of Western Australia and Healthy Land and Water investigated data driven models and ensemble machine learning techniques to improve predictions of water quality model outputs. This report summarises the project findings in context of a south-eastern Queensland catchment.

Making our water models climate change ready: Are they up to the task? (PDF, 3.1MB)

Following the completion of the critical review of climate change and water modelling in Queensland project, delivered in partnership with the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and University of Newcastle, Alluvium Consulting Australia has developed a stand-alone evaluation criteria and a scoring system to help assess the readiness of water models to account for or incorporate climate change in their use.

This independent resource, suitable for use by practitioners in reviewing a model’s treatment of climate and to support decision makers, is now available for application.

Prediction of cover-dependent runoff amount and peak runoff rate for grazing land in Queensland Final Report (PDF, 2.2MB)

This project provides data improvements and estimation techniques that might allow hillslope erosion predictions of the Paddock to Reef catchment modelling for Reef Plan (for grazing lands) to be more sensitive to cover and management improvements. Delivered by Griffith University, this project includes data products for predictions of runoff depth and the peak runoff rate, at time and spatial scales for improved P2R Catchment modelling for Reef Plan.

HowLeaky Model V5 Technical Documentation (PDF, 4.0MB)

HowLeaky is a software model that has been designed to assess the impacts of different land uses, soil conditions, management practices and climate-types on water balance and water quality. This document aims to provide HowLeaky users and developers with a detailed scientific description of the simulation model contained within the HowLeaky software (Version 5.49). This includes documentation of the scientific model equations, algorithms and descriptions of the input and output parameters. Sample input parameter values for different submodels are provided in the appendices.

This document does not aim to provide any information about the running of the software nor the features of its user-interface.

Critical review of climate change and water modelling in Queensland (PDF, 5.7MB)

This project assessed Queensland’s current ability to incorporate climate variability and climate change projections in water models. Bringing together an experienced team of hydrologists, hydroclimate scientists, water quality scientists and practitioners, Alluvium Consulting Australia delivered the project in partnership with the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and University of Newcastle. Using the best available science, the project provided a clear pathway to consistent, robust modelling approaches for assessing climate change in Queensland water models.

The QWMN is coordinating an integrated response to the final report and investment portfolio recommendations. To get involved, contact QWMN@des.qld.gov.au.

Improving how gully erosion and river sediment transport processes are represented in Queensland catchment models (PDF, 2.1MB)

This report reviews the current understanding of gully erosion and river sediment transport processes in Queensland catchments, and details how these processes have been represented in water quality models over the last 20 years. Developed through a consensus approach, the report identifies the research, data collection and conceptual design needs to improve these modelling practices, to make them more relevant to the growing needs of land management agencies and communities.

Queensland Water Modelling Network Water Model Catalogue (PDF, 2.3MB)

This catalogue provides a concise overview and collation of the major water models currently used by the Queensland Government. It is a resource for researchers and students to better understand the scope and range of models being applied by Queensland Government agencies and utilise these tools and applications for teaching and collaborative research projects.

Queensland Water Modelling Network Good Modelling Practice Principles (PDF, 1.5MB)

This paper synthesises existing knowledge and experience on good water modelling practices and principles. It provides guidance for new and existing water model development efforts and informs end users and decision makers about what distinguishes good modelling practices from poor ones.

Queensland Water Modelling Network Technical Forum Summary: November 2017 (PDF, 7.8MB)

This document summarises the presentations given and issues discussed at the Forum attended by representatives from government agencies, public research bodies, universities, statutory authorities, not-for-profit organisations and the private sector.

P2R Program Integration of Paddock Scale Modelling and Source Final Report: November 2018 (PDF, 15.5MB)

Modelling of pollutant loads entering the Great Barrier Reef (GBR) is undertaken as part of the Paddock to Reef Integrated Monitoring, Modelling and Reporting Program (P2R). This project has investigated methods for integrating paddock and catchment scale modelling to improve representation of daily constituent concentrations going into the reef.

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