Bhubaneswar: Water levels continued to rise in major rivers including Mahanadi following heavy rains in the catchment areas and release of surplus water from various reservoirs in Odisha on Sunday. Collectors of all districts have been asked to remain alert as rainfall was likely to continue in different parts of the state for the next two days due to a low pressure which might lead to a flood like situation, official sources said. As water level continued to increase steadily in the Mahanadi, as many as 19 sluice gates were opened so far in Hirakud dam on the river located in Sambalpur district, Special Relief Commissioner (SRC) P K Mohapatra said. The level touched 609.69 feet as against its capacity of 630 ft at Hirakud reservoir where inflow of water was recorded at 4,37,955 cusec while outflow stood at 3,08,666 cusecs, a senior official said. Despite rising water level, there was no immediate threat of flood in major rivers like Brahmani and Baitarani which were flowing much below the danger marks, the SRC said. Similarly, water level was much below the danger marks in Subarnarekha and Budhabalanga rivers.