Detailed text transcripts for TV channel - CNN - 20110508:04:20:00
Is four blocks away from the riverbanks. but there have since been big changes to keep the river back. a system of flood walls, gates, and levees developed since the 1950s should keep the city dry, but it's a system that's never been hit with this much water. >> they've never been tested, but all of the sukt mbject matt experts are telling us we can have a high confidence level. >> reporter: blowing levees slowed the flood's arrival down river. officials around memphis are using the time to prepare. a call has gone out to volunteers to fill sandbags for government buildings and hospitals. the ...