Composite river health assessment combining hydrological, physico-chemical, and biological indicators — producing a scored, GIS-mapped River Health Index for river basin management, government planning, and environmental compliance.
A River Health Index (RHI) provides a structured, quantitative assessment of the ecological and hydrological condition of a river basin — translating complex, multi-dimensional indicators into a single scored index that can be tracked over time, mapped spatially, and used to prioritise intervention.
The HYDRisk RHI methodology integrates three categories of indicator: hydrological indicators (flow regime, peak discharge, hydrological alteration — weighted at 40%), physico-chemical indicators (water quality, sediment, temperature — weighted at 35%), and biological indicators (aquatic biodiversity, riparian vegetation — weighted at 25%).
Three scenarios are analysed: baseline current conditions, climate change (SSP2-4.5 and SSP5-8.5 using CMIP6), and land use change — providing a forward-looking picture of how river health is projected to change and where intervention is most urgently needed.
HYDRisk River Health Index assessments are designed for government bodies, river basin management authorities, environmental agencies, and NGOs responsible for river basin management and reporting.
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.