Prevención, protección y mitigación contra fenómenos naturales y el incremento del desarrollo humano sobre las cuencas.

Abstract

The prevention and mitigation of risks associated with natural phenomena in river basins requires systematically understanding how human development increases exposure and vulnerability, as well as identifying effective strategies validated in comparative experiences. This monograph conducts a descriptive, documentary, and comparative study that analyzes the interaction between natural phenomena (floods, landslides, droughts, earthquakes) and human development in basins, through systematic review of technical and regulatory sources, and the construction of a comparative analysis matrix of national and international cases. The methodology is based on systematic documentary review of institutional sources (IDEAM, IGAC, UNGRD), regulatory frameworks (Law 1523 of 2012, Sendai Framework), and technical standards (ICOLD, ISO 31000), complemented with comparative analysis of cases: international (Mississippi River basin, Yangtze, Hoover Dam, Majes-Siguas II project) and national (La Mojana, Canal del Dique, Hidroituango, Magdalena River). The construction of analysis matrices allowed systematizing technical variables (type of hazard, implemented works, non-structural measures) and comparing results, effects, and lessons learned. The main results show that: (1) disorderly human development alters hydrological balances, increases exposure and vulnerability, and deteriorates geomorphological stability; (2) the most effective strategies combine hydraulic works (dams, dikes, drainage systems, geotechnical monitoring) with non-structural measures (territorial planning, ecosystem restoration, early warning systems, community strengthening); (3) articulated governance, continuous monitoring, and integration between infrastructure and nature are critical success factors; (4) there are gaps in the implementation of Colombian regulatory frameworks and in preventive maintenance of infrastructure. The specific contribution of this monograph consists of the comparative systematization of national and international cases through analysis matrices that allow identifying technical patterns, lessons learned, and critical variables for risk management in basins, providing guidelines directly applicable to the design and evaluation of civil engineering projects in Colombia. Effective prevention and mitigation require integrated approaches that combine hydraulic engineering, environmental management, and territorial governance, supported by permanent monitoring, preventive maintenance, and social participation. The systematic application of these guidelines can contribute to reducing vulnerability and increasing the resilience of Colombian river basins.