How is Medellín's sewage system for these downpours?

TL;DR

Medellín faces frequent flooding due to intense rainfall overwhelming its drainage system, despite having over 80,000 drains.
The city's 5,000 km sewage network, designed for domestic waste and rainwater, struggles with sudden heavy downpours.
Low-lying areas like Vial Depressed areas are particularly prone to flooding when the Medellín River also rises, creating a hydraulic bottleneck.
While the system's pipes are generally within their lifespan, the sheer volume of water in short periods is the main cause of saturation.
Solutions being tested include Sustainable Urban Drainage Systems (SUDS) and a plan to create 40,000 m2 of floodable parks to act as 'urban sponges'.
Urban development with increased concrete and reduced green spaces exacerbates rainwater stagnation, according to experts.
Geologists warn that the topography of the Aburrá Valley makes it prone to landslides when heavy rains saturate slopes.

Continuar leyendo el artículo original