Comprehensive catchment characterisation and drainage network analysis — mapping how water flows, accumulates, and reaches your site from the entire upstream area, using GIS and industry-standard hydrological tools.
A watershed analysis defines the hydrological boundaries of a catchment — identifying the full upstream area that contributes runoff to a given point, and mapping the drainage network that channels that water. It is the spatial and physical foundation on which all hydrological modelling, flood risk assessment and drainage design is built.
Without a proper watershed analysis, it is impossible to correctly estimate how much water will arrive at a site during a storm event, or to design drainage infrastructure that can handle it. Undersized drainage, poorly located detention basins, and missed upstream tributaries are the most common consequences of skipping this step.
HYDRisk watershed analyses use high-resolution DEM data — SRTM, NASADEM, or LiDAR where available — processed through QGIS and ArcGIS to produce accurate, GIS-format catchment boundary maps, combined with land use and soil characterisation to derive runoff curve numbers.
The output is a complete hydrological characterisation of the upstream catchment — delivered in GIS format for direct integration with hydraulic models, drainage designs, and flood risk assessments.
Understanding what this study delivers — and what happens without it — is the fastest way to evaluate whether your project needs it.
Every HYDRisk study produces a defined set of technical outputs — here is exactly what you receive.
Every tool we use is the same software trusted by government agencies, major engineering firms and regulatory bodies worldwide.
Methodology, data sources and regulatory requirements differ between geographies. HYDRisk delivers the right approach for every region.