Casualties At least 59 people were reported to have died from the effects of the dam's destruction, according to Russian authorities, The
Associated Press reported in December 2023 that Russian occupation authorities vastly and deliberately undercounted casualties by immediately removing bodies not claimed by family, and preventing local health workers and volunteers from dealing with the dead and threatening them when they defied orders. Ukrainian health workers estimate that the number is at least in the hundreds, but an exact number may never be known. The day after the dam's destruction, Ukraine's prosecutor general estimated that about 40,000 people located in Ukrainian- and Russian-controlled land were likely to be impacted by flooding. The Ukrainian governor of Kherson Oblast,
Oleksandr Prokudin, said that about of the region was underwater and that 68 percent of the flooded territory was on the Russian-controlled side. The flooding along the Dnieper also resulted in a backflow along its right-bank tributary, the
Inhulets River, causing flooding in Kherson as well as in Mykolaiv Oblast. The
National Police of Ukraine ordered an evacuation in the Ukrainian-controlled western bank of the Dnieper, including
Mykolaivka, , ,
Tiahynka, , , ,
Prydniprovske, and the Korabel Island district of
Kherson city. The governor of Kherson Oblast,
Oleksandr Prokudin, told Ukrainian TV on the morning of 6 June that eight villages had been flooded, and that evacuations by bus and train were ongoing for 16,000 residents in the affected areas. On 7 June,
Zelenskyy alleged to
Politico Europe that Russian forces were murdering rescuers working at the site of the flood. Three people were killed after Russian forces opened fire on an evacuation boat on 12 June. In Russian-controlled
Nova Kakhovka by the eastern end of the dam, 22,000 people live in flood risk areas, and 600 houses were reported to have been flooded. A state of emergency on the left bank of the river was declared by Russian authorities. Ukrainian authorities said an evacuation of 17,000 people was underway from the territories under Ukrainian control, with 24 villages flooded. The
Ukrainian Environment Ministry reported on 25 June that the Dnipro had returned to its normal banks.
Animals and environment s breeding in the
Black Sea Biosphere Reserve. Around half the global population of this bird nests here on low islands, and are likely to lose their 2023 breeding season in the flooding. A number of wildlife habitats were flooded. Some 300 animals at the Fairytale Dibrova Zoo drowned in the disaster. The zoo was just downstream and to the west of the dam. In the immediate aftermath, Russian news agency
TASS falsely claimed the zoo did not even exist before backtracking and admitting that there was a zoo but insisted all animals were safe. A video showing locals having to move cattle and pets through floods was widely distributed on social media. The
Red Cross warned that
minefields were washed away. Erik Tollefsen, head of Red Cross's weapons section, said: : "We knew where the hazards were ... Now we don't know. All we know is that they are somewhere downstream." Former minister of ecology
Ostap Semerak said that this was the biggest environmental catastrophe in Ukraine since the
1986 Chernobyl disaster. The Ukrainian Nature Conservation Group issued a report that detailed the environmental devastation. The
Grand Meadow National Nature Park, a protected area consisting of 13 islands in the northeastern part of the Kakhovka Reservoir was completely drained, raising fears of a drought, while water levels decreased by approximately 13 meters in the
Kamianska Sich National Nature Park, according to the
Ukrainian Environment Ministry. The release of chemicals such as
ammonia and bacteria such as
Salmonella,
Escherichia coli and
Vibrio cholerae into the Dnipro-Buh Delta and the Black Sea following the dam's destruction led to beach closures and fishing bans across
Odesa and
Mykolaiv oblasts. Authorities said the contamination of those areas had turned them into "garbage dumps" and "animal cemeteries." In the weeks following the dam's destruction, Ukraine claimed that outbreaks of intestinal diseases such as
cholera had broken out in Russian-occupied areas of Kherson Oblast and
Crimea, adding that several Russian soldiers had died as a result. According to ecologist Alexey Vasilyuk, for decades industrial waste from
Zaporizhzhia, including a huge amount of
heavy metals, settled in the mud at the bottom of the Kakhovka Reservoir since there was no flow to disturb it. Now, the current in the river raises this waste into the water column and moves it downstream. Also, the area that used to be at the bottom of the reservoir but has now dried out will begin to be blown away by the wind, allowing these metals to be absorbed into plants that people and animals eat. Vaslyuk advises that the sowing of grasses in these bare areas will help prevent dispersion of these metals. The year after the dam's destruction, wildlife returned to the
Great Meadow, area that had been under the reservoir. Fish that had been locally extirpated by the dam, such as
sturgeon and
herring, returned, and willow and poplar trees have sprouted and grown.
Military impact The flooding was widely expected to hinder a planned Ukrainian counteroffensive by making it harder for the Ukrainian army to cross the Dnieper River into Russian-occupied territory.
Vladimir Saldo, the Russian-installed governor of
occupied Kherson, said the breach would help Russian forces defend the area, saying, "In military terms, the situation has worked out in a way that is operationally and tactically in favour of Russian forces". Many analysts noted that the breach, which eliminated the road on the dam, left only the
Antonivsky Bridge in
Kherson city as a paved river crossing. On 2 July, 70 Ukrainian soldiers landed under the Russian-controlled end of the
Antonivskyi Bridge on the left bank of the
Dnieper river, in the first crossing since the dam's destruction. Analysts also noted that floodwaters would make the soil on the Russian side of the river swampy for weeks to come, preventing its use by heavy machinery such as tanks. The increased difficulty of moving forces in the area would help secure the Russian southern flank, freeing up military resources to repel Ukraine's offensive in
Zaporizhzhia Oblast. Furthermore, the civil emergency could be expected to drain resources that could otherwise have been used by Ukraine in the war. Five days after the breach, Ukrainian Deputy Defense Minister
Hanna Malyar said on 11 June that Russian forces were transferring their most combat-capable forces from
Kherson to
Bakhmut, adding that Russia likely destroyed the dam to shorten its defensive lines in Kherson ahead of the Ukrainian counteroffensive. But four days later, the
Institute for the Study of War said that they had not yet observed Russian elements moving from Kherson to Bakhmut. The
British Defense Ministry said on 19 June that over the previous 10 days Russia had moved elements of its Dnipro Group of Forces from the eastern bank of the Dnieper River to reinforce the
Zaporizhzhia and Bakhmut sectors, and that this likely reflects Russia's perception that a major Ukrainian attack across the Dnieper had become less likely. Retired U.S. general
David Petraeus said on June 6 that the breach would cause no "military implications that are particularly large" because "the period of time that this is under water restricts the trafficability and so forth, but over time that will clear up." Petraeus said that as the flood waters recede, the river will actually become shallower and easier to cross. He also said that this event will not prove to be a decisive hindrance to Ukraine. "I think they are going to crack the Russians. I think the Russians will prove to be quite brittle." In some places it seems that it could be possible to cross the Dnieper River in a
4WD. It has been asserted that the Ukrainian military could take advantage of this, and of the fact that the Russians have moved troops from that area to buttress their forces in Zaporizhzhia and the
Donbas, to cross the Dnieper by assault. On 15 November, Russia conceded that Ukrainian forces have been able to cross the Dnieper river, but claimed that they face "fiery hell", insisting that "the Ukrainian assault would be thwarted."
Water supply Water from the dam reservoir supplies Southern Ukraine,
Crimea, and the
Zaporizhzhia Nuclear Power Plant. As floods affected water pipes in Southern Ukraine,
President Zelenskyy said that hundreds of thousands of people do not have "normal access to drinking water" in the region. Residents were urged to boil water for potential contamination. The United Nations later estimated that about 700,000 people in the area were in need of clean drinking water, while over a million people in
Dnipropetrovsk Oblast alone were expected to face water shortages. The head of Ukraine's hydropower generating company
Ukrhydroenergo announced that the water level had dropped below the "dead" point of , meaning that water could no longer be withdrawn for settlements and for the Zaporizhzhia Nuclear Power Plant. How low it could go would depend on whether the lower part of the dam had been destroyed to its base. If so, the water level would reach about and the width of the reservoir would decrease from to . Initially, the water level was reported to fall per hour. Twenty-four hours after the breach, the water level at
Nikopol had fallen and stood at . After 48 hours the level was .
Ukrhydroenergo announced on 26 June that the Kakhovka Reservoir had become "catastrophically" shallow. The average level of the lower pool near the dam was . On 25 June the average depth of the reservoir was , and could go to . According to the Ukrainian Hydromedical Center the Dnipro River water level at Kherson had returned to its level before the dam was destroyed. Before the destruction of the dam the water level was over .
Oleksandr Kubrakov,
Minister of Infrastructure of Ukraine, announced on 3 July that Ukraine had begun the construction from scratch of three pipelines totaling almost in order to supply drinking water to more than 1 million people from
Zaporizhzhia,
Kherson,
Mykolaiv, and
Dnipropetrovsk oblasts. He announced that
₴1.5 billion (US$41M) had been allocated to this from the Fund for Dealing with the Aftermath of Armed Aggression, The overlay project would start once Russian forces leave the east side of the Dnieper and would be expected to take two months. As of 20 June, the reservoir's water surface area had shrunk to , less than a quarter of its former area. A number of new wells are being dug to provide for the local water needs. According to Andriy Volodin, who is overseeing the work of digging new wells, after the water drained from the reservoir the water table in the area fell dramatically. Before the dam was destroyed, wells would reach groundwater at but by September they had to drill . According to Volodin, "The weight of the Kakhovka Reservoir used to push the water up toward the surface. Now the pressure is gone, and it has receded." He said that the water from these wells, though a bit salty, will suffice for irrigation. The village of
Malokaterynivka lost its water supply and now must be supplied by truck. The
North Crimean Canal, normally active from March until December, and has traditionally supplied 85% of Crimea's water. Up to 80% of this water was used in agriculture and 60% of that was used for rice farming and pond fish farming. This resulted in eight years of halted water flow, and was only unblocked in March 2022 after the Russians gained control of Kherson Oblast. Land used for farming shrank from , and rice and buckwheat cultivation had to be stopped. The Russian-installed mayor of
Nova Kakhovka said that the dam's destruction would cause "problems" with water supplies to Crimea from the North Crimean Canal. "Clearly one of the aims of this act of sabotage was to deprive Crimea of water—the water level in the reservoir is dropping and, accordingly, the water supply to the canal is being drastically reduced," he said. The Crimean occupation authority said that there was "no threat of the North Crimean Canal losing water". The reservoirs on the peninsula were filled to about 80% according to
Sergey Aksyonov, the head of the
Russian-annexed, but internationally unrecognised,
Republic of Crimea. On 10 June 2023 the
Institute for the Study of War referenced a Russian video reportedly showing that the North Crimean Canal had become dry, contradicting the recent Russian statements that there was no threat of the canal losing water. The Ukrainians accused the Russians of not having a clear plan on how to solve the problem, and trying to avoid the issue and resorting to propaganda in order to prevent panic among the local population instead of working in terms of infrastructure. Ihor Syrota, the head of Ukraine's hydro electric company
Ukrhydroenergo, said on 12 June 2023 that given that the water level in the Kakhovka Reservoir is much lower than the intake level of the North Crimean Canal, water would not flow to Crimea through the canal "for at least a year". According to Christopher Binnie, a water engineer specializing in dams and water resources development, "Pumping for water supply to the Crimea could restart fairly soon." Concurring roughly with this is Agribusiness Global (90 m3/sec), so the proposed rate by pumping would result in half the normal rate. Water flows through the North Crimean Canal by gravity until it reaches the
Dzhankoi district, where it meets the first of a series of pumping stations that must pump it uphill. The first pumping station has a capacity of about 70 m3/sec. According to First Deputy Prime Minister of Russian-annexed Crimea,
Rustam Temirgaliyev in 2014, the normal flow of water through the North Crimean Canal was 50 m3/sec. A number of other sources also report this figure.
Euromaidan Press reports 294 m3/sec as does another source. On the high end is a source reporting 380 m3/sec, with 80 m3/sec of this going to Kherson and the remainder going to Crimea. According to a 2023 study, in the early 1990s annual water flows into the canal from the reservoir reached 3.5 km3, but a more economical use of water reduced this to 1.5 km3, of which 0.5 km3 were used in the Kherson Oblast and 1.0 km3 in Crimea. In 2014, after the annexation of Crimea, this was reduced to 0.5 km3, according to the study. This means that 1,346.35 million m3 came from the canal, which translates to a flow rate of 42.7 m3/sec during 2013, according to this source. If of the water entering the North Crimean Canal was distributed in Kherson, as indicated by the 2023 study, and 1,346.35 million m3 arrived in Crimea, then this indicates a water flow into the canal during 2013 of 64 m3/sec. The average flow in the Dnieper River is about 1,670 m3/sec. The amount of water flowing past the intake point of the North Crimean Canal is regulated by the
five reservoirs upstream on the Dnieper River, all controlled by Ukraine. Two major canals take in water upstream from the North Crimean Canal, from what was originally the Kakhovka Reservoir: the Kakhovsky Canal and the Dnieper-Kryvyi Rih canal. Also taking water from the former Kakhovka Reservoir were various minor irrigation systems, freshwater fish farms, and systems supplying water to cities such as Zaporizhzhia. The total withdrawal of water from the Kakhovka Reservoir just for large canals was estimated at 900 m3/sec.
Farming The area that had been irrigated by the Kakhovka Reservoir typically receives of rainfall during the summer growing season, which is ordinarily not enough for all crops to thrive unless irrigated. Before the Dnieper River was dammed to create the Kakhovka reservoir, most of
Kherson and
Zaporizhzhia were arid areas. According to the
Ukrainian Ministry of Agriculture, the destruction of the dam will leave of land without irrigation, turning them into "deserts". In 2021, farmers harvested from this land about 4 million tons of grains and oilseeds, representing about 4% of Ukraine's grains and oilseeds production. Ninety-four percent of the irrigation systems in
Kherson Oblast, 74% of those in
Zaporizhzhia Oblast and 30% of those in
Dnipropetrovsk Oblast will be without water. Even without the disaster, Ukraine's grains and oilseeds production was expected to be down 8% from the output of 2022, and down 36% from the output of 2021 (the year before the war began), according to the Ukrainian Grain Association. Oleksandr Krasnolutskyi, Ukraine's deputy minister of environmental protection and natural resources, stated that the floodwater has washed away the topsoil layers from thousands of hectares of farms and arable lands. "We will not be able to cultivate agricultural plants on this soil for many years ahead," he said. Ukraine is in no danger of famine. Before the war Ukraine harvested 50 million tons of grain but the domestic need was only 20 million tons. The dam disaster, however, will lead to lower farming revenue for Ukraine and could result in food shortages on world markets and potentially famine in poor countries that rely on Ukrainian grain exports. The Ukrainian government has announced financial assistance for farmers affected by the dam destruction in the amount of
₴3,318 (
US$90) for a vegetable harvest loss of , with a maximum of in the Mykolaiv Oblast and in the Kherson Oblast.
Fisheries In an interview on 13 July 2023
Mykola Solskyi,
Minister of Agrarian Policy and Food of Ukraine, stated that as a result of draining the Kakhovka Reservoir 11,400 tons of fish were lost, worth
₴9.8 billion (US$267M). He said that 85 fisheries were destroyed: 49 in the Kakhovka Reservoir and 36 in the
Dnieper-Bug estuary.
Costs of reconstruction In March 2023 (prior to the destruction of the dam) a joint assessment was released by the
Government of Ukraine, the
World Bank, the
European Commission, and the
United Nations, estimating the total cost of reconstruction and recovery in Ukraine to be US$411 billion (€383 billion). This could eventually exceed US$1 trillion (€911 billion), depending on the course of the war. Ivan Perehinets, a department head at Ukraine's Academy of Construction, said in an interview on 19 June with Ukrainian Radio that it would cost US$60–70 billion (€55-64 billion) to restore housing and infrastructure in
Kherson Oblast that was damaged by the destruction of the dam, and that reconstruction efforts would take 5–10 years and require 1.5 million workers.
Ruslan Strilets,
Ukrainian Minister of Environmental Protection and Natural Resources, said on 21 June that the destruction of the dam caused an initial US$1.5 billion of damage, and also warned that Russian mines released by flooding could float onto the shores of other European countries. A separate estimate by the
Ukrainian Agriculture Ministry tallied damage to water reclamation systems and canals at
₴150–160 billion (US$4.1–4.3 billion). The United Nations later estimated the total amount of damage at about $14 billion, with the immediate damage associated with the initial destruction and flooding costing about $2.79 billion to infrastructure alone. The
use of Russian frozen assets to pay these costs is being considered but institutions such as the
European Central Bank insist that the
eurozone's financial stability, as well as the strength of its common currency, depend on stabilizing mechanisms such as sovereign immunity and the various international treaties that are in place, and finding a way to confiscate the frozen assets without violating such principles and treaties has proven to be elusive. The Ukrainian Ministry of Reintegration reported on 23 August that the government had allocated (US$124 million) towards reconstruction measures for the Kakhovka dam, adding that around (US$35 million) had been allocated to the reconstruction of damaged and destroyed homes in the flood zone. The Ministry said that the funds would enable affected residents to "have the resources to repair their homes before winter". More than 340 applications for compensation for crop losses were submitted and payments of had been established. Ukraine has begun the second stage of the "e‑Restore" program, designed to compensate residents for housing destroyed or damaged during the war. (US$5,400), and 1,400 applicants received
₴114 million The second stage, begun 18 July, will not have restrictions on the amount of compensation but certain limitations apply, and the amount to be compensated will be calculated according to a specific formula. Stage two was described as a "beta test" and will only be operational in two villages in
Kyiv Oblast, but if successful it could be expanded to regions affected by the flooding when the dam collapsed. ==Legal responses==