The average thickness of the ice on the reservoir is about 40 centimeters (16 inches), half what it was in 2011 when heavy flooding prompted officials to abruptly lower the water level of the reservoir. According to the National Radio Company of the Ukraine, the CEO of the company that operates the dam doesn’t expect similar action will be needed this year.
The dam is of particular importance because it sits at the head of a series of dams on the Dnieper River. If it were to fail, the floodwater could potentially overwhelm downstream dams, causing severe flooding in Kyiv and other cities. The dam also receives particular scrutiny because the Kyiv Reservoir contains sediments contaminated with radionuclides from the Chernobyl nuclear meltdown of 1986. The defunct plant is located about 80 kilometers (50 miles) northwest of the dam, and a river that flows near it drains directly into the Kyiv Reservoir.
NASA Earth Observatory image created by Jesse Allen, using EO-1 ALI data provided courtesy of the NASA EO-1 team. Caption by Adam Voiland.
Brazil’s Porto Primavera Dam sits on the Paraná River, 28 kilometers (17 miles) upstream from the confluence of the Paranapanema and Paraná Rivers. Constructed to provide hydroelectricity, this dam created the Porto Primavera Reservoir
The longest river in Asia, the Yangtze River brings mixed blessings to China. Although it meets the water needs of millions of people, the river regularly overflows its banks. To protect residents and land in the lower Yangtze floodplains, China began construction on the Three Gorges Dam in 1994.