J. Gathenya

Flood risk mitigation for an urban catchment: findings from a grey, nature-based solutions and hybrid strategy approach

Flow diagram showing rainfall-driven flood modelling using HEC-RAS, comparing baseline, nature-based solutions, structural measures, and hybrid scenarios, with reductions in flood depth, velocity, and discharge across the catchment. Rapid urban expansion and informal settlements are increasing exposure to flood haza...

Modeling heavy metal fate, transport, and bioaccumulation in coupled water-soil-plant systems of Lake Sonfon, Sierra Leone.

Household exposure pathways and perceived health risks associated with artisanal and small-scale gold mining around Lake Sonfon, Sierra Leone: a cross-sectional study

Artisanal and small-scale gold mining (ASGM) is widely associated with heavy metal contamination in rural communities, yet limited evidence links multiple household exposure behaviours to self-reported health outcomes, particularly in lake-dependent West African settings. This cross-sectional study assessed househo...