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HOUSTON, TX - SEPTEMBER 01: People begin the process of cleaning up the damage to their property after torrential rains caused widespread flooding during Hurricane and Tropical Storm Harvey on September 1, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi on August 25, dumped around 50 inches of rain in and around areas of Houston and Southeast Texas. (Photo by Scott Olson/Getty Images)

HOUSTON, TX - SEPTEMBER 01:  People begin the process of cleaning up the damage to their property after torrential rains caused widespread flooding during Hurricane and Tropical Storm Harvey on September 1, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi on August 25, dumped around 50 inches of rain in and around areas of Houston and Southeast Texas.  (Photo by Scott Olson/Getty Images)

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HOUSTON, TX - SEPTEMBER 01: Kristopher Garner helps begin the process of cleaning up the damage to his grandmothers property after torrential rains caused widespread flooding during Hurricane and Tropical Storm Harvey on September 1, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi on August 25, dumped around 50 inches of rain in and around areas of Houston and Southeast Texas. (Photo by Joe Raedle/Getty Images)

HOUSTON, TX - SEPTEMBER 01: Kristopher Garner helps begin the process of cleaning up the damage to his grandmothers property after torrential rains caused widespread flooding during Hurricane and Tropical Storm Harvey on September 1, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi on August 25, dumped around 50 inches of rain in and around areas of Houston and Southeast Texas.  (Photo by Joe Raedle/Getty Images)

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HOUSTON, TX - SEPTEMBER 01: Cornell Beasley joins other residents in the process of drying out and tossing out their possessions after torrential rains caused widespread flooding during Hurricane and Tropical Storm Harvey on September 1, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi on August 25, dumped around 50 inches of rain in and around areas of Houston and Southeast Texas. (Photo by Scott Olson/Getty Images)

HOUSTON, TX - SEPTEMBER 01:   Cornell Beasley joins other residents in the process of drying out and tossing out their possessions after torrential rains caused widespread flooding during Hurricane and Tropical Storm Harvey on September 1, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi on August 25, dumped around 50 inches of rain in and around areas of Houston and Southeast Texas.  (Photo by Scott Olson/Getty Images)

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HOUSTON, TX - AUGUST 29: People make their way out of a flooded neighborhood after it was inundated with rain water following Hurricane Harvey on August 29, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi August 25, has dumped nearly 50 inches of rain in and around Houston. (Photo by Scott Olson/Getty Images)

HOUSTON, TX - AUGUST 29:  People make their way out of a flooded neighborhood after it was inundated with rain water following Hurricane Harvey on August 29, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi August 25, has dumped nearly 50 inches of rain in and around Houston.  (Photo by Scott Olson/Getty Images)

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HOUSTON, TX - SEPTEMBER 02: Miguel Gomez pulls sheetrock out of his home that was inundated with water as he begins the process of rebuilding after torrential rains caused widespread flooding during Hurricane and Tropical Storm Harvey on September 2, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi on August 25, dumped around 50 inches of rain in and around areas of Houston and Southeast Texas. (Photo by Joe Raedle/Getty Images)

HOUSTON, TX - SEPTEMBER 02: Miguel Gomez pulls sheetrock out of his home that was inundated with water as he begins the process of rebuilding after torrential rains caused widespread flooding during Hurricane and Tropical Storm Harvey on September 2, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi on August 25, dumped around 50 inches of rain in and around areas of Houston and Southeast Texas.  (Photo by Joe Raedle/Getty Images)