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HOUSTON, TX - AUGUST 28:  Evacuees fill up cots at the George Brown Convention Center that has been turned into a shelter run by the American Red Cross to house victims of the high water from Hurricane Harvey on August 28, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi late Friday evening, is expected to dump upwards to 40 inches of rain in areas of Texas over the next couple of days.  (Photo by Erich Schlegel/Getty Images
HOUSTON, TX - AUGUST 28:  Evacuees fill up cots at the George Brown Convention Center that has been turned into a shelter run by the American Red Cross to house victims of the high water from Hurricane Harvey on August 28, 2017 in Houston, Texas. Harvey, which made landfall north of Corpus Christi late Friday evening, is expected to dump upwards to 40 inches of rain in areas of Texas over the next couple of days.  (Photo by Erich Schlegel/Getty Images

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    Active rescues still ongoing in Houston area

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Active rescues still ongoing in Houston area

CNN's Ed Lavandera reports from Friendswood, Texas, where there have been 2,000 people rescued so far.

Active rescues still ongoing in Houston area

CNN's Ed Lavandera reports from Friendswood, Texas, where there have been 2,000 people rescued so far.