Uruguay: Disruptions due to flooding continuing across various areas as of early March 26 /update 1

Flood disruptions continue to affect parts of Uruguay as of early March 26. Heavy rainfall has impacted the region since late March 20, causing river levels to rise and widespread flooding, particularly in central and southern regions. As of early March 26, more than 5,500 people remain displaced across the country; more than 2,500 in the Duzano Department, nearly 2,200 in the Canelones Department, around 650 in the San Jose Department, and 185 in the Florida Department. At least nine national roads remain closed across Canelones, Duzano, Florida, and Rocha departments. Floodwaters are beginning to recede in many areas and drier conditions are expected to prevail in most regions through at least March 30; however, lingering disruptions are likely in flood-affected areas over the coming days.

Further sustained heavy rainfall could trigger additional flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas. Disruptions to electricity and telecommunications services are possible where significant flooding, landslides, or strong winds impact utility networks.

Floodwaters and debris flows could render some bridges, rail networks, or roadways impassable, impacting overland travel around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters. Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas with heavy rainfall and potential track inundation. Localized business disruptions may occur in low-lying and riverine areas.

Flooding could heighten the threat of disease outbreaks. Backflow from drains mixed with floodwaters can become trapped in open areas when inundations recede. These stagnant pools often become a breeding ground for mosquitoes and bacteria, increasing the incidence of insect- and water-borne diseases. Exposure to contaminated water from inundated industrial sites, sewer systems, and septic tanks also poses a significant health threat.