Dam breaches

Flood waters rushing down the Cimarron River wash away the ground under a home in the Twin Lakes community near Cimarron City, Okla. on Wednesday, May 22, 2019. (Chris Landsberger/The Oklahoman via AP)

This Feb. 20, 2019, photo shows the Oroville Dam spillway in Oroville, Calif. California officials say the flood-control spillway at the nation's tallest dam is expected to be deployed as early as Tuesday, April 2, 2019, for the first time since it was rebuilt after it crumbled during heavy rains two years earlier, forcing nearly 2000,000 people to evacuate. (AP Photo/Rich Pedroncelli)

FILE - In this July 26, 2018, file photo, a man paddles his boat through a flooded village after a dam in southeastern Laos collapsed, in the Sanamxay district, Attapeu province, Laos. A United Nations human rights expert is urging Laos to focus less on big, foreign-invested dam and railway contracts and devote more resources to helping its children and the poor. Philip Alston, the U.N. rapporteur on poverty, said Laos’ economy can only thrive if its leaders do a better job of educating and caring for all of its people.(AP Photo/Hau Dinh, File)

FILE - This March 17, 2019 file photo provided by the U.S. Air Force shows an aerial view of Offutt Air Force Base and surrounding areas in Nebraska affected by flood waters. After this spring's massive flooding along the Missouri River, many want to blame the agency that manages the river's dams for making the disaster worse, but it may not be that simple. The U.S. Army Corps of Engineers says much of the water that created this month's flooding came from rain and melting snow that flowed into the river downstream of all the dams, and at the same time, massive amounts of water filled the reservoirs and some had to be released. (Tech. Sgt. Rachelle Blake/U.S. Air Force via AP, File)

FILE - In this July 26, 2018, file photo, a man paddles his boat through a flooded village after a dam in southeastern Laos collapsed, in the Sanamxay district, Attapeu province, Laos. A United Nations human rights expert is urging Laos to focus less on big, foreign-invested dam and railway contracts and devote more resources to helping its children and the poor. Philip Alston, the U.N. rapporteur on poverty, said Laos’ economy can only thrive if its leaders do a better job of educating and caring for all of its people.(AP Photo/Hau Dinh, File)

FILE - In this Jan. 28, 2019 file photo, a helicopter carrying a body pulled from the mud, days after a Vale dam collapsed, flies over a cemetery with two open graves in Brumadinho, Brazil. Lax regulations, chronic short staffing and a law that muffled the voices of environmentalists on mining licenses made the collapse all but destined to happen, experts and legislators say. (AP Photo/Leo Correa, File)

Helicopters hover over an iron ore mining complex to release thousands of flower petals paying homage to the dozens of victims killed and scores of missing after a mining dam collapsed there a week ago, in Brumadinho, Brazil, Friday, Feb. 1, 2019. (AP Photo/Andre Penner)

Friends and relatives hold signs with the names of victims, during a march paying homage to the victims of a mining dam collapse a week ago, in Brumadinho, Brazil, Friday, Feb. 1, 2019. A spokesman for the Minas Gerais Fire Department said after the ceremony that authorities were not calling off the search for bodies although no one had been found alive since Saturday. (AP Photo/Andre Penner)

A woman who lost a relative lights candles outside a church after a Mass for the victims of a mine dam collapse in Brumadinho, Brazil, Thursday, Jan. 31, 2019. The dam failure unleashed a surge of mud that buried buildings adjoining the dam and several parts of the nearby city of Brumadinho. (AP Photo/Andre Penner)

Tereza Ferreira Nascimento, center, her sister-in-law Sonia Santos, left, and her brother Pedro Ferreira dos Santos dig with garden tools in search of the body of Tereza's and Pedro's missing brother Paulo Giovane Santos, days after a mining company's dam collapsed in Brumadinho, Brazil, Wednesday, Jan. 30, 2019. "We are here since Friday taking turns between brothers, brothers-in-law, searching for the body so that we can at least give him a dignified burial,” said Nascimento, holding back tears. “So far it has been in vain.” (AP Photo/Andre Penner)