• For May 12, the National Institute of Meteorology and Hydrology (NIMH) has issued a first-degree warning (yellow code) for hazardous weather conditions in 18 regions in Central and Eastern Bulgaria

As of May 11, 2026, the total volume of water stored in complex and major dams is 5 168.1 million cubic meters, representing 79.07% of their total capacity. Currently, the fill rate of complex and major dams is the highest compared to the values recorded over the past nine years during the same calendar period.

The Kamchia Dam is 100% full, while at ove 90% full are Srechenska Bara, Hristo Smirnenski, Yovkovtsi, Ticha, Yasna Polyana, Asenovets, Borovitsa, Studena, Domlyan, Pchelina, Krichim, Kardzhali, and Ivaylovgrad. The dams Kamchia, Asenovets, Pchelina, and Pancharevo are overflowing.

In connection with the spring flood season, if necessary, the companies managing the complex and significant dams will be taking measures to ensure available capacity by preemptively releasing water to accommodate the increased inflow and maintain water levels within optimal limits.

According to data from the National Institute of Meteorology and Hydrology (NIMH), this afternoon and tomorrow, many areas will experience brief showers with thunderstorms, and potentially hail. For May 12, 2026, the NIMH has issued a first-degree warning (yellow code) for hazardous meteorological phenomena in 18 regions of Central and Eastern Bulgaria, where conditions exist for thunderstorms, intense short-term rainfall, and hailstorms. Light rainfall is also expected on Wednesday in isolated areas, mainly in the Eastern and mountainous regions, and on Thursday - in more areas, mainly in Southern Bulgaria. Over the weekend, the likelihood of intense and significant rainfall increases.

Today (May 11) and tomorrow, river levels are expected to rise as a result of rainfall in the afternoon and evening hours. Water levels will remain below warning thresholds.

The Ministry of Environment and Water reminds local authorities to implement the measures outlined in the 2022–2027 Flood Risk Management Plans and to monitor the latest hydrometeorological information and forecasts for hazardous events published on the Ministry’s official website.

The Ministry of Environment and Water manages water resources in 52 major and complex reservoirs.