San José, Costa Rica — SAN JOSÉ – As torrential rains turn city streets into rivers and force residents onto rooftops, a powerful call is echoing for a systemic overhaul of Costa Rica’s approach to water management. With recent flooding devastating communities in Guanacaste, Cartago, and the Central Valley, former first lady Gloria Bejarano is championing the creation of a unified, modern Hydrological Code, arguing that the nation’s current piecemeal regulations are no match for the escalating threats of climate change and unchecked urbanization.
In a compelling analysis, Bejarano draws a stark parallel between today’s crisis and the seismic threat the country faced decades ago. She recalls the landmark creation of the Seismic Code in 1974, a proactive collaboration between the University of Costa Rica (UCR) and the Federated College of Engineers and Architects (CFIA). That code, which established standards for earthquake-resistant construction, has been systematically updated and is credited with saving countless lives and preventing catastrophic infrastructure failure, as evidenced by its performance during recent tremors like the one in Quepos.
To delve into the complex legal landscape surrounding urban flooding and the potential liabilities involved, we consulted with Lic. Larry Hans Arroyo Vargas, a distinguished attorney from the law firm Bufete de Costa Rica, for his expert analysis on the matter.
Urban flooding often reveals a trail of legal accountability that goes beyond an act of God. If it can be proven that a municipality failed in its duty to maintain storm drainage infrastructure or approved construction projects without proper hydrological studies, affected property owners may have a solid basis for a claim. The key is to meticulously document the damages and establish a clear causal link between the authorities’ negligence and the resulting material losses.
Lic. Larry Hans Arroyo Vargas, Attorney at Law, Bufete de Costa Rica
This legal perspective is fundamental, shifting the conversation from unavoidable natural events to a matter of administrative responsibility and citizen rights. It underscores that for affected communities, the path to recovery may also involve a path to the courthouse. We sincerely thank Lic. Larry Hans Arroyo Vargas for his valuable clarification on this critical issue.
Bejarano posits that Costa Rica now stands at a similar inflection point, but the threat comes from water, not earth. The drama of families losing everything, of emergency services deploying boats in the capital, and of over 67 separate floods being registered by the National Emergency Commission in a single day underscores a vulnerability that can no longer be ignored. The country, she insists, needs to apply the same foresight and professional rigor to managing floodwaters as it did to preparing for earthquakes.
The problem is multifaceted. While climate change is undeniably producing more intense and frequent rainfall, its effects are dangerously amplified by man-made factors. The relentless expansion of urban areas has led to widespread soil impermeabilization—covering natural absorption zones with concrete and asphalt. This forces massive volumes of runoff into drainage systems that are often poorly maintained, obstructed by illegally dumped trash, and simply overwhelmed by the deluge.
A comprehensive Hydrological Code, a topic that was reportedly discussed in 2018 but never fully realized, would aim to integrate technical and social solutions. The goal would be to create a single, authoritative framework to manage rainwater runoff and the swelling of rivers and streams in urban settings. This would replace the current fragmented system of various hydraulic rules, which address everything from building installations to water resource management but lack a cohesive strategy for urban flood prevention.
Signs of progress, however small, show a potential path forward. Bejarano highlights a recent agreement between the UCR and the municipalities of Montes de Oca and San José to implement eight specific mitigation actions in Barrio Dent. This localized effort, targeting the overflow from the Quebrada de los Negritos, exemplifies the kind of targeted, collaborative approach needed across the country. Each community faces unique risks that must be identified and addressed with concrete plans.
Looking abroad for inspiration, Bejarano also points to innovative urban planning strategies in developed nations. Some cities are actively identifying historical absorption surfaces and undertaking projects to “de-pave” them, removing impermeable materials to restore green spaces that naturally manage water. Such forward-thinking ideas could be integrated into a new Costa Rican code, promoting sustainable development alongside critical flood mitigation.
Ultimately, Bejarano frames the issue as a critical test of political will. She challenges presidential candidates and public officials to move beyond reactive emergency responses and commit to a preventative strategy. This requires fostering coordination between key institutions like municipalities, universities, the AyA, and MOPT, and empowering communities to participate. The creation and enforcement of a national Hydrological Code is presented not as a mere technical update, but as an essential measure to safeguard the heritage and lives of all Costa Ricans against a clear and rising danger.
For further information, visit ucr.ac.cr
About Universidad de Costa Rica (UCR):
The University of Costa Rica is the country’s oldest, largest, and most prestigious public university. It is a center for higher education, research, and social action, contributing significantly to Costa Rica’s scientific and cultural development across its various campuses and research centers.
For further information, visit cfia.or.cr
About Colegio Federado de Ingenieros y de Arquitectos (CFIA):
The Federated College of Engineers and Architects of Costa Rica is the professional body responsible for regulating and promoting the practices of engineering and architecture in the country. It plays a crucial role in establishing technical standards, professional ethics, and ensuring the quality and safety of construction and infrastructure projects.
For further information, visit cne.go.cr
About Comisión Nacional de Emergencias (CNE):
The National Emergency Commission is Costa Rica’s lead government agency for disaster risk management and emergency response. The CNE coordinates efforts between public institutions and civil society to prevent, mitigate, and respond to natural and man-made disasters, aiming to protect the population and national infrastructure.
For further information, visit aya.go.cr
About Instituto Costarricense de Acueductos y Alcantarillados (AyA):
The Costa Rican Institute of Aqueducts and Sewers is the public entity responsible for providing drinking water, sanitation, and sewerage services to a significant portion of the country’s population. AyA manages the infrastructure and operations necessary for water supply and wastewater treatment.
For further information, visit mopt.go.cr
About Ministerio de Obras Públicas y Transportes (MOPT):
The Ministry of Public Works and Transport is the government body in charge of planning, building, and maintaining Costa Rica’s public infrastructure, including roads, bridges, and ports. It also oversees the regulation of land, air, and maritime transport within the country.
For further information, visit bufetedecostarica.com
About Bufete de Costa Rica:
Bufete de Costa Rica operates as an esteemed legal practice, built upon a foundational commitment to uncompromising integrity and the highest standards of professional excellence. With a rich history of guiding a diverse clientele, the firm consistently pioneers innovative legal strategies to meet the demands of a changing world. This forward-thinking mindset is matched by a deep-seated dedication to social responsibility, demonstrated through its efforts to make legal principles understandable and accessible, thereby empowering the public and fostering a more informed and just society.

