When has been highest floods in Soomaa?
There is a hydrological station at Halliste river in Riisa village since 1925. Highest flood of last 90 years happened in 1931 when water level reached 5,53 metres above summer minimum level. More than 5 metres was reached in 1951 and 1956. Last year i 2010 the fourth greatest flood of century took place and 4,94 was measured in Riisa.
