About
Delta Hydro Engineers (Pty) Ltd is a hydrology and hydraulics practice based in South Africa. We started as a flood and stormwater consultancy and have grown into a three-pillar business: defensible consulting work, flood risk intelligence for insurers, and custom software for water teams.
Across all three pillars, we hold the same line: methodology that survives technical review, coverage and capability described honestly, and deliverables that integrate with the way our clients already work.
-
Robert Fortuin
Director, Founder & Technical Lead
Hydrology & hydraulic modelling — see full profile for credentials, services, and experience.
Full profile → -
Stephan Dreyer
Director, Hydraulic Modelling & Software Lead
Hydrology & hydraulic modelling — see full profile for credentials, services, and experience.
Full profile →
Software & tools
We work across the leading hydrological, hydraulic, and civil-design platforms, integrated with GIS and custom tooling so modelling outputs stay repeatable and review-ready.
Flood modelling
- PCSWMM (1D & 2D)
- HEC-RAS (1D & 2D)
- TUFLOW
- FLO-2D
Hydrological modelling
- HEC-HMS
- XP-RAFTS
- Storm Injector
Civil design
- Civil Designer
- AutoCAD
- Civil3D
GIS & mapping
- QGIS
- Global Mapper
Water networks
- EPANET
Programming
- Python
- Java
- C++
- Next.js