In Poland, the floods caused the deaths of at least 25 people, the evacuation of approximately 23,000 people, and an estimated economic cost of
euros. Poland's Prime Minister
Donald Tusk informed the
Sejm that ongoing flooding was "the worst natural disaster in the nation's history ... without precedent in the past 160 years". Two months' worth of rain poured down over a 24‑hour period. and important artifacts were moved to higher ground as floodwaters approached. The flooding lasted for a number of days, and escalated on 20 May when the
Vistula River broke its banks. In the town of
Sandomierz, residents were stranded in their homes while power outages affected telecommunication. The 2010 flooding was considered more severe than
the last major flood, in 1997. The Kozanów district of Wrocław was flooded after a temporary sandbag wall was breached. 's flooded Kozanów district - The riverbed is located approximately 500m from the edge of the forest on the left side On Sunday 23 May the Wisła river broke a retaining wall and flooded
Świniary near Płock, and nearby villages, including Szady,
Wiączemin Polski,
Nowy Wiączemin and Nowosiodło. Reports stated that 22 villages in the Płock area had sustained flooding or were under imminent threat. Around 4,000 people and 5,000 animals were evacuated. In
Płock, Gmury street was submerged. On 23 May, it was reported that 23 villages were already flooded with 4–5 meters of water and the situation continued to worsen. During the May floods, at least 6,200 households in the Małopolska region alone were fully or partially flooded and 12,000 people were affected by it. Numerous other places in Poland were flooded too. In the
Lesser Poland Voivodeship, another flood alert was announced on 2 June in relation to
Kraków,
Tarnów, the counties of
Bochnia,
Brzesko,
Dąbrowa, and
Sucha, and eight
gminas. Twelve rivers exceeded the alarm level in 14 places and eleven rivers exceeded warning levels in 21 places. On 4 June the railway bridge between
Nowy Sącz and
Stary Sącz was broken by the river
Poprad. At least three people fell from the bridge into the rushing waters. According to some reports their fate is still unknown while other say they managed to save themselves. The Poprad river also flooded the town of
Muszyna. On 5 June the Vistula flooded the
Gmina Szczucin and around 3,000 people had to be evacuated. In the
Silesian Voivodeship, flood alerts were again issued in the
Bielsko,
Bieruń-Lędziny,
Cieszyn,
Gliwice,
Pszczyna,
Racibórz,
Wodzisław and
Żywiec counties, and in the cities of
Bielsko-Biała,
Gliwice and
Zabrze. In the
Lublin Voivodeship,
river-side gminas announced flood alerts. In the
Subcarpathian Voivodeship, the river
Ropa flooded the town of
Jasło on 5 June. From 3 June, the
Trześniówka river flooded the part of the city of
Sandomierz (located in the
Świętokrzyskie Voivodeship) which lies on the right side of the Vistula, and which was already flooded in May. The city was also threatened by the Vistula river which reached 770 cm, over 100 cm past the alarm level. ==Czech Republic==