Water management

Clear solutions for our clients

At Ausenco, we have the expertise necessary to provide a range of services to our clients, particularly in the area of water management, specialising in surface water, ground water and water balance services and solutions. 

We specialise in ensuring our clients’ water resources are managed effectively and that this has a positive flow-on effect in erosion and sediment control and the treatment of waste water.

To learn more about our capabilities in civil and water management services and projects we’ve completed for our clients, click on the related case studies or download our water management brochure in English, Spanish or Portuguese.

Hydrology services

The considerable experience of our people in all aspects of hydrology and hydrogeology is complemented by our knowledge of local conditions and enables us to tackle complex problems and offer our clients ingenious solutions. 

Ausenco’s expertise in water includes surface water hydrology assessment, groundwater and mine dewatering and site-wide water balance.

Water and wastewater treatment services

Ausenco provides a range of services from the earliest analytical and master planning phases of a project, continuing through the design and engineering, permitting, and construction process. 

We have proven expertise in integrating plans for water management and reuse with overall land use and systems planning to achieve the most environmentally sustainable, cost-effective, and energy efficient outcomes.

Resource services

Ausenco offers a broad list of services to help protect our clients’ water resources. We have the expertise to provide analysis and design services to characterise and quantify our clients’ project’s impact on surface water and ground water flows. 

Our design capabilities are enhanced by state-of-the-art numerical modelling techniques that allow us to predict run-off and groundwater flow, to ensure we have the accurate information to make project decisions and assist in design and management of structures.  

The management of both surface water and groundwater is essential in all mining projects with needs ranging from water supply for mineral processing, dewatering of mine workings and pit slopes, diversion of surface water around mine facilities to minimisation of environmental impacts.

Surface water hydrology assessments focus on determining stream flow for current local and regional conditions, as well as potential future conditions. Assessments typically involve site visits to establish hydrographic characteristics, such as the surface cover type of the watershed, erosion factors, meteorological data analysis, historic and current stream flow measurements, and watershed hydraulic modelling.  

Integrated water management analysis of projects includes a review of local and regional development plans for watersheds. Using the results of current and future water management strategies and hydraulic modelling, we work with clients to assist with decision-making process matrices for specific project water management plans. These results can also be useful when used in conjunction with environmental studies.  

The characterisation of surface storage reservoirs is based primarily on site conditions and project requirements. Site conditions define reservoir foundation requirements to ensure that impoundments can safely retain water or mine facilities. 


At Ausenco we understand that meaningful predictions of mine inflows require a determination of sources and volumes of groundwater recharge, the volume of rock impacted by dewatering and associated storage, and location and interconnectivity of permeable zones. 

Water balances

We conduct comprehensive site-wide water balances to provide a water management strategy and assess the potential impact of the project on water resources. 

This can include determination of the quantities of fresh water supply, circulating flows, moisture contents, water storage requirements and treated water discharge over the life of the project and decommissioning period.  

Our people have performed surface water and ground water studies in a wide variety of climatological and hydrological regimes from arid to tropical to arctic. 

Our approach combines process driven flows with climatic dependent components such as catchment modelling for water availability, flow throughout the vadose zone of heaps and dumps, and groundwater study outputs. Analyses of accountability of quality and usage can be performed to better understand interaction of natural and industry processes.