This chapter gives the history of the GEO-RIO foundation, an institute of geotechnics of the municipal government, which has been working to map the risk of landslides and develop prevention measures for almost 50 years. This article highlights their work since the 2010 floods, with the city Mayor, to develop a Disaster Risk Reduction Action Plan, which includes newer technologies for mapping risk, stabilising areas, early warning systems and protecting vulnerable populations.