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# A Colombian watershed model maps flood and landslide risk with green infrastructure options
- URL: https://intelligence.wildlandseco.com/2026-10-08-colombia-catchment-bluegreen-risk/
- Published: 2026-10-08T13:39:29.000Z
- Updated: 2026-10-08T13:39:29.000Z
- Description: A planning framework links hazard records with places for forest, floodplain, pond and wetland investments.
- Author: Benjamin Worlund
- Tags: climate adaptation, GIS, planning, Cities, Water, #ecological-intelligence, #brief-2026-10-08, #landscape-city-watch, #geo-latin-america-caribbean

Evidence

Peer-reviewed spatial planning model

Geography

Guarapas River catchment, Huila, Colombia

System

Tropical catchment / blue-green infrastructure

## WHAT THE EVIDENCE SAYS

Weighted multicriteria overlays identify more than 60% of the catchment as suitable for at least one blue-green measure; historical hazard records were used for validation. The paper's up-to-55% risk-reduction claim is from modelled scenarios, not deployed projects.

## WHY IT MATTERS / OUR READ

This is an approach for targeting capital in data-poor catchments, but the next test is field hydrology, maintenance and institutional feasibility.

## CAVEATS / UNCERTAINTY

Risk reduction is simulated and depends on scoring weights and input resolution, not measured performance after construction.

## SOURCE

Sustainability and Climate Change · original spatial decision model  
[View original evidence ↗](https://doi.org/10.1177/26922932261421360?ref=intelligence.wildlandseco.com)

From the Morning Brief · 2026-10-08

[Read the full Morning Brief →](https://intelligence.wildlandseco.com/morning-brief-2026-10-08/)