Bulgaria's large and important reservoirs were 64.81% full on 13 October, according to data the Ministry of Environment and Water published on its website. This is the highest level for the time of year in the past eight years.

The ministry manages the water in 52 reservoirs in this category, which hold 4,236.1 million cubic metres. The total volume is more than 12% higher than in mid-October 2025.

Reservoirs for drinking water and household supply are the fullest, at 79.06%. Those used for power generation come next, at 69.77%. The lowest levels are in irrigation reservoirs (49.46%) and in reserve reservoirs for drinking water and household supply (47.14%).

Rain will push river levels up today and during the night to 14 October. From the afternoon of 14 October and through 15 October, levels will mostly fall, although run-off may raise them in places.

Rivers in the Danube basin are expected to rise again on the evening of 15 October and during the night to 16 October. On 16 October, rivers will rise in the East Aegean basin and in places in the mountain areas of the West Aegean basin. The amount of water will stay below warning thresholds, the ministry says.

The ministry called on local authorities to apply the measures set out in the Flood Risk Management Plans for 2022–2027. It also asked them to follow current hydrometeorological information and forecasts of dangerous weather.

For 14 October, the National Institute of Meteorology and Hydrology issued a level one, yellow code warning for 14 regions, mostly in the eastern half of Bulgaria. The institute forecasts long spells of rain tomorrow in the Rhodope Mountains and southeast Bulgaria. Elsewhere the rain will ease gradually and stop, first in the west, and in the afternoon the clouds over western areas will break up.

The wind will blow from the north-northeast, moderate in many places and strong in eastern areas, the institute warned.