Our dedicated consultants operate across all sectors of the water industry, for all types of clients, globally. Whether your business involves water resources, water supply or wastewater – we can provide you with innovative and sustainable solutions.Our consultants' capabilities include the investigation and development of water resources, the assessment of water needs and implementation of appropriate supplies, and the tractability and disposal of wastewater. We endeavor to involve stakeholders at all levels in the progression of water infrastructure projects.Our knowledge of the environmental impacts of water developments enables us to undertake projects in a way that will improve quality of life for beneficiaries – without damaging the environment.We deliver leading edge services locally through our network of offices globally. From investment planning to operational support, design for capacity building, our water consultants are supporting clients including private investors and PLCs and national and local governments in conflict zones and fragile and developing states.


Dams and reservoirs


Range of services

  • Water resources planning and hydrological analysis

  • Hydraulic engineering and modelling

  • Dam breach analysis

  • Flood inundation modelling and risk assessments

  • GIS mapping and digital terrain modelling

  • Analysis of remote sensing data, including LiDAR surveys

  • Geotechnical engineering including materials and site investigations

  • Hydropower design and optimisation

  • Slope stability and seepage analysis

  • Environmental impact scoping and detailed studies

  • Feasibility studies, value engineering, detailed design and construction supervision

  • Statutory inspections and certification of safety works


Irrigation and drainage


We provide leading consultancy services aimed at improving irrigation, drainage and water resources management. 

Our projects cover both large- and small-scale developments and include development of new irrigation systems and the rehabilitation and modernisation of established systems. We closely match our well-proven technical skills with a sensitivity to agricultural, social, environmental, institutional and economics issues to develop sustainable irrigation as part of a coherent approach to improving rural livelihoods.

More important than the scale of the projects is their diverse nature. We are at the forefront of developments in participatory irrigation management through work on management of large-scale irrigation and drainage systems in Uganda, development of economic and regulatory policy in Ghana, as well as on a smaller scale in Kenya and Ethiopia. We work with water users to ensure that irrigation is developed and managed to suit their livelihood strategies and takes full account of their diverse interests.

Irrigation can have an important role in poverty reduction, but this is only achieved if projects are well-managed and target the interest of vulnerable groups. We have undertaken a series of research studies, to examine ways of improving irrigation management with the specific objective of ensuring that poor water users get reliable access to water – for whatever purpose they require it – and can use this to improve their livelihoods.

We provide a comprehensive range of services, covering all stages in the project cycle from identification through implementation to commissioning and future operation.

Weirs barrages


We undertake all aspects of barrage engineering including planning, site investigations, model and sedimentation studies, economic appraisal and outline design through to detailed design and implementation.




The rehabilitation of existing dams has become increasingly important and Halkin Group offers a comprehensive service to cover all aspects of this work.

Concrete dams


Halkin Group has been involved in the design and construction of many concrete dams throughout the world including conventional mass gravity structures and arch dam.

Wastewater networks


We deliver efficiencies through constantly developing new tools and processes to improve our services. We have automated many of our processes to ensure efficient outputs and we utilize our internal project and program management systems to ensure key milestones are achieved.

We have built and verified numerous hydraulic models, in varying degrees of complexity and size, with different drivers, project focus and catchment specific requirements. Our internal modelling procedures are regularly reviewed to ensure we utilize best practice. Our models ensure cross-fertilization of new ideas and best practice throughout.

Whilst we often undertake new model building work, we also are required to adapt models from other organizations for future use. We have robust procedures in place to do this, assessing the condition of an existing model and highlighting any areas for improvement to suit the planned work and identify risks associated with this. This allows the client to make informed decisions on, for example, future investment in survey work.

Typical work packages:

  • Existing model review – identification of data gaps and risk identification

  • Identification/planning of survey requirements (eg manholes, CCTV including sonar surveys to determine sewer silt depth, topography, flow, impermeable area)

  • Procurement of survey work, including specification, on site liaison/management and interpretation of survey data

  • Liaison with landowners, highway authorities and other third parties including securing access permissions

  • Model verification, model improvements and upgrades

  • Identification of catchment needs, optioneering and solution modelling

  • Water quality and river impact modelling

River engineering


Environmental issues are always given due consideration during the design process and steps are taken to reduce any undesirable impact a scheme may have.

Much of our river engineering experience has been in relation to the study, design and implementation of flood alleviation schemes in fluvial and tidal environments. Our river engineers have worked on diversions, river training works, scour protection at bridges, river amenity improvements, river flow gauging stations and flow control structures.

Our team of in-house experts in hydrology, hydraulic modelling, environmental impact assessment, and landscape design work closely with our hydraulic engineers in developing river engineering works.