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In this photograph taken Dec. 14, 2016, a painter works underneath the Santa Catalina arch in Antigua Guatemala, Guatemala. Established in 1543 as the territorial capital of the Spanish crown and abandoned after a series of earthquakes, the colonial city is home to preserved and colorful churches and mansions from the era and now is a tourist center. (AP Photo/Manuel Valdes)

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In this photograph taken Dec. 14, 2016, an indigenous woman walks on the street where the Santa Catalina arch is located in Antigua Guatemala, Guatemala. Established in 1543 as the territorial capital of the Spanish crown and abandoned after a series of earthquakes, the colonial city is home to preserved and colorful churches and mansions from the era and now is a tourist center.(AP Photo/Manuel Valdes)

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Bill Croyle, acting Director of the California Department of Water Resources, speaks during a news conference about the situation at the Oroville Dam on Sunday, Feb. 12, 2017, in Marysville, Calif. A Northern California sheriff says evacuation orders affecting thousands of people will stand until there is more information on the condition of the nation's tallest dam's emergency spillway. Croyle said officials will be able to assess the damage to the emergency spillway now that the water is no longer spilling over the top. (AP Photo/Rich Pedroncelli)

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Bill Croyle, acting Director of the California Department of Water Resources, speaks as Butte County Sheriff Kory Honea listens at a news conference about the situation at the Oroville Dam on Sunday, Feb. 12, 2017, in Marysville, Calif. Croyle said officials will be able to assess the damage to the emergency spillway now that the water is no longer spilling over the top. Honea said evacuation orders affecting thousands of people will stand until there is more information on the condition of the nation's tallest dam's emergency spillway. (AP Photo/Rich Pedroncelli)

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Butte County Sheriff Kory Honea speaks during a news conference about the situation at the Oroville Dam on Sunday, Feb. 12, 2017, in Marysville, Calif. Honea said evacuation orders affecting thousands of people will stand until there is more information on the condition of the nation's tallest dam's emergency spillway. Bill Croyle, acting Director of the California Department of Water Resources, said officials will be able to assess the damage to the emergency spillway now that the water is no longer spilling over the top. (AP Photo/Rich Pedroncelli)

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Chris Mitchell fills his car with gas as his daughter, Austin, checks her mobile phone before evacuating Oroville, Calif., Sunday, Feb. 12, 2017. Mitchell was among the thousands of area residents who left their homes Sunday evening as officials ordered residents near the Oroville Dam in Northern California to evacuate the area after an emergency spillway of the dam severely eroded. (AP Photo/Rich Pedroncelli)

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FILE - (AP Photo/Rich Pedroncelli)

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Haley Miller peers into grocery store that was closed due to an evacuation order Sunday, Feb. 12, 2017, in Oroville, Calif. Thousands of Northern California residents remain under evacuation orders after authorities warned an emergency spillway in the country's tallest Oroville Dam was in danger of failing Sunday and unleashing uncontrolled flood waters on towns below. (AP Photo/Rich Pedroncelli)

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A Butte County Sheriff's vehicle patrols a shopping center that had been evacuated due to an evacuation order Sunday, Feb. 12, 2017, in Oroville, Calif. Thousands of Northern California residents remain under evacuation orders after authorities warned an emergency spillway in the country's tallest Oroville Dam was in danger of failing Sunday and unleashing uncontrolled flood waters on towns below. (AP Photo/Rich Pedroncelli)

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A closed sign is displayed on the door of Papaciito's restaurant due to an evacuation order Sunday, Feb. 12, 2017, in Marysville, Calif. Thousands of Northern California residents remain under evacuation orders after authorities warned an emergency spillway in the country's tallest Oroville Dam was in danger of failing Sunday and unleashing uncontrolled flood waters on towns below. (AP Photo/Rich Pedroncelli)

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Bill Croyle, acting director of the California Department of Water Resources, speaks during a news conference about the situation at the Oroville Dam on Sunday, Feb. 12, 2017, in Marysville, Calif. A Northern California sheriff says evacuation orders affecting thousands of people will stand until there is more information on the condition of the nation's tallest dam's emergency spillway. Croyle said officials will be able to assess the damage to the emergency spillway now that the water is no longer spilling over the top. (AP Photo/Rich Pedroncelli)

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In this Sunday, Feb. 12, 2017 photo, a medical worker monitors a patient infected with H7N9 bird flu at Wuhan Medical Treatment Center in Wuhan in central China's Hubei province. Several Chinese cities are shutting down their poultry markets in the wake of a bird flu outbreak that has killed at least two dozen people this year across China. (Chinatopix via AP)

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In this Feb. 11, 2017, photo released by the California Department of Water Resources, water flows over an emergency spillway at the Oroville Dam at Lake Oroville in Oroville, Calif. Water will continue to flow over the emergency spillway at the nation's tallest dam for another day or so, officials said Sunday. (Albert Madrid/California Department of Water Resources via AP)

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In this Saturday, Feb. 11, 2017, photo, water flows down Oroville Dam's main spillway, in Oroville, Calif. Officials have ordered residents near the Oroville Dam in Northern California to evacuate the area Sunday, Feb. 12, saying a "hazardous situation is developing" after an emergency spillway severely eroded. (AP Photo/Rich Pedroncelli)

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This Saturday, Feb. 11, 2017, aerial photo released by the California Department of Water Resources shows the damaged spillway with eroded hillside in Oroville, Calif. Water will continue to flow over an emergency spillway at the nation's tallest dam for another day or so, officials said Sunday. (William Croyle/California Department of Water Resources via AP)

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This Feb. 11, 2017, photo released by the California Department of Water Resources shows the main spillway, bottom, and an auxiliary spillway, upper, of the Oroville Dam at Lake Oroville in Oroville, Calif. Water will continue to flow over the emergency spillway at the nation's tallest dam for another day or so, officials said Sunday. (Albert Madrid/California Department of Water Resources via AP)

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California Highway Patrol officer Ken Weckman directs traffic as residents evacuate Marysville, Calif., Sunday, Feb. 12, 2017. Thousands of residents of Marysville and other Northern California communities were told to leave their homes Sunday evening as an emergency spillway of the Oroville Dam could fail at any time unleashing flood waters from Lake Oroville, according to officials from the California Department of Water Resources. (Paul Kitagaki Jr./The Sacramento Bee via AP)

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A driver waits in traffic to evacuate Marysville, Calif., Sunday, Feb. 12, 2017. Thousands of residents of Marysville and other Northern California communities were told to leave their homes Sunday evening as an emergency spillway of the Oroville Dam could fail at any time unleashing flood waters from Lake Oroville, according to officials from the California Department of Water Resources. (AP Photo/Rich Pedroncelli)

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In this Saturday, Feb. 11, 2017, water flows down Oroville Dam's main spillway, near Oroville, Calif. Officials have ordered residents near the Oroville Dam in Northern California to evacuate the area Sunday, Feb. 12, saying a "hazardous situation is developing" after an emergency spillway severely eroded. (AP Photo/Rich Pedroncelli)

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In this Saturday, Feb. 11, 2017, water flows down Oroville Dam's main spillway near Oroville, Calif. Officials have ordered residents near the Oroville Dam in Northern California to evacuate the area Sunday, Feb. 12, saying a "hazardous situation is developing" after an emergency spillway severely eroded. (AP Photo/Rich Pedroncelli)