Dr John C. Macintosh

BE(Hons) PhD HonFIEAust RPEQ CPEng



Dr Macintosh has over 40 years professional civil engineering experience with the last 35 years in the water engineering field. His experience is broad and covers specialist investigation, design and computer modelling within the hydraulic, hydrological and hydrogeological fields. Ancillary areas of special interest include the practical application of new technologies, such as remote sensing and satellite imagery, radar for flood warning, and geographic information systems. His work as taken him to a variety of countries in Africa, South East Asia and the South Pacific on both aid based and commercially funded projects.

In October 1995 Dr Macintosh established Water Solutions Pty Ltd with the key objective of providing specialist services within the water resources and engineering fields.

Prior to this, Dr Macintosh worked for a number of established engineering consultants including: CMPS&F Environmental (Manager and Principal Engineer, Water Engineering Group); GHD Pty Ltd (Principal Engineer, Hydrology & Hydraulics); and BHP Engineering (Supervising Engineer, Water Engineering Group).

Dr Macintosh is an active member of the Institution of Engineers, Australia with current responsibilities including Immediate Past Chairman of the National Committee on Water Engineering and Member of the Queensland Division Water Panel (Past Chairman).

He is recipient of Engineers Australia’s award for Australian Professional Engineer of the Year (2016-17).

Toby McGrath




Toby McGrath has over 20 years of experience in water resources including significant experience in water planning and management, surface water hydrology and hydraulics, catchment and floodplain management, water policy, water information management, water approvals and compliance, asset management, real-time flood operations, climate change and project management. Commencing his career with the Queensland Water Resources Commission, Toby fulfilled roles with the Department of Natural Resources, SunWater and KBR before moving to Water Solutions in 2012. Toby is the Queensland representative on Engineers Australia’s National Committee on Water Engineering, and recently chaired the Organising Committee for the 34th IAHR World Congress. In the wake of the severe 2010/11 Queensland Floods, Toby was pleased to assist the Queensland Chief Scientist to prepare the report ‘Understanding Floods: Questions and Answers’.