Ecuador faces hydroelectric risks as Mazar reservoir levels drop

The Mazar reservoir in Ecuador is experiencing a significant decline in water inflow, dropping to approximately 14.6 cubic meters per second on October 14, 2026. This represents a 51% reduction from earlier that morning. The reservoir's level has fallen to roughly 2,125 meters above sea level, placing it just over 10 meters above its critical operational threshold of 2,115 meters. Reaching this threshold increases the risk of sediment damaging hydroelectric turbines.

In the Cuenca region, rivers including the Tomebamba, Yanuncay, Tarqui, and Machángara are reporting low flow rates. Experts from Etapa EP note that while occasional showers have occurred, they have not been sufficient to recharge water sources because the soil remains dry. High temperatures and intense solar radiation are further exacerbating the situation by accelerating evaporation. Authorities indicate that at least two weeks of continuous rainfall in recharge zones is required to stabilize the water supply and mitigate the ongoing national electricity shortages.