Flood waters have begun to recede slightly in Austria, but local authorities say that the situation in some parts of the country remain tense. The governor of Lower Austria, Johanna Mikl-Leitner, said on Tuesday that there is a continuing threat of dam breaches and landslides, and many people are still without electricity. She said it was important to remain cautious and vigilant. On Monday alone, dams broke in 21 places in the eastern state, with the clean-up work likely to take weeks and in some cases months. There is “a great deal of human suffering, a great deal of financial suffering,” sa…