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| Isaac-battered barriers intentionally breached | Isaac-battered barriers intentionally breached |
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| Officials have begun a controlled release of water at a Mississippi dam that was battered by Hurricane Isaac. | Officials have begun a controlled release of water at a Mississippi dam that was battered by Hurricane Isaac. |
| Tens of thousands residents are being evacuated in Louisiana downstream of the barrier at Lake Tangipahoa, which is damaged but remains intact. | Tens of thousands residents are being evacuated in Louisiana downstream of the barrier at Lake Tangipahoa, which is damaged but remains intact. |
| The slow-moving Isaac continues to dump huge amounts of rain, despite being downgraded to a tropical storm. | The slow-moving Isaac continues to dump huge amounts of rain, despite being downgraded to a tropical storm. |
| A similar breach was carried out on a levee just outside New Orleans that has been under pressure from flood waters. | A similar breach was carried out on a levee just outside New Orleans that has been under pressure from flood waters. |
| Water overtopped the 8ft (2.4m) levee at Plaquemines Parish on Wednesday, prompting major flooding. The barrier is not part of the federal system. | Water overtopped the 8ft (2.4m) levee at Plaquemines Parish on Wednesday, prompting major flooding. The barrier is not part of the federal system. |
| Plaquemines was one of the areas hardest-hit by the storm. Many residents stayed, believing they could ride out a far weaker storm than Hurricane Katrina in 2005. | Plaquemines was one of the areas hardest-hit by the storm. Many residents stayed, believing they could ride out a far weaker storm than Hurricane Katrina in 2005. |
| Homeowners on roofs | Homeowners on roofs |
| Residents with boats have been plucking people from the roofs of their homes. | Residents with boats have been plucking people from the roofs of their homes. |
| Meanwhile, up to 50,000 residents are being evacuated in south-eastern Louisiana downstream of the impaired dam at Lake Tangipahoa. There are fears the barrier could fail, flooding an already swollen river. | Meanwhile, up to 50,000 residents are being evacuated in south-eastern Louisiana downstream of the impaired dam at Lake Tangipahoa. There are fears the barrier could fail, flooding an already swollen river. |
| Tangipahoa Parish President Gordon Burgess told local broadcaster WWL that Louisiana Governor Bobby Jindal had ordered buses to the area to help evacuate residents. | Tangipahoa Parish President Gordon Burgess told local broadcaster WWL that Louisiana Governor Bobby Jindal had ordered buses to the area to help evacuate residents. |
| In the town of Amite, Louisiana, Police Chief Jerry Trabona said officers were going door-to-door along the Tangipahoa River. | |
| More than 7,000 National Guard troops, the US reserve armed forces, have been called into service across four states, the majority in Louisiana. | More than 7,000 National Guard troops, the US reserve armed forces, have been called into service across four states, the majority in Louisiana. |
| Gov Jindal activated all Louisiana guardsmen on Wednesday, which would bring total forces in the state to more than 8,000. They have helped rescue or evacuate more than 3,000 people in the state since the storm hit. | Gov Jindal activated all Louisiana guardsmen on Wednesday, which would bring total forces in the state to more than 8,000. They have helped rescue or evacuate more than 3,000 people in the state since the storm hit. |
| By 16:00 local time (21:00 GMT) on Thursday, Isaac had weakened further to a tropical depression with maximum sustained winds of 35mph (55km/h), according to the National Hurricane Center (NHC). | |
| But forecasters say Isaac could still dump up to 14in (35cm) of rain over much of Louisiana, Mississippi, south-west Alabama and Arkansas through to Friday. Some areas could see rainfall of up to 25in, the NHC said. | |
| The storm pummeled New Orleans on Wednesday, on the seventh anniversary of Hurricane Katrina, which devastated the region and killed at least 1,800 people in the Gulf Coast area. | The storm pummeled New Orleans on Wednesday, on the seventh anniversary of Hurricane Katrina, which devastated the region and killed at least 1,800 people in the Gulf Coast area. |
| Defence systems built to protect the city passed their first major test, according to the US Army Corps of Engineers. | Defence systems built to protect the city passed their first major test, according to the US Army Corps of Engineers. |
| By Thursday morning, more than one million residents of Louisiana and Mississippi were without power due to Isaac, according to the US Department of Energy. | |
| Isaac is expected to move further inland over the next several days before breaking up over the weekend. | Isaac is expected to move further inland over the next several days before breaking up over the weekend. |
| The storm killed at least 24 people as it passed over Haiti and the Dominican Republic earlier this week. | The storm killed at least 24 people as it passed over Haiti and the Dominican Republic earlier this week. |
| Are you in the path of the storm? You can send us your experiences using the form below. | Are you in the path of the storm? You can send us your experiences using the form below. |
| Send your pictures and videos to yourpics@bbc.co.uk or text them to 61124 (UK) or +44 7624 800 100 (International). If you have a large file you can upload here. | Send your pictures and videos to yourpics@bbc.co.uk or text them to 61124 (UK) or +44 7624 800 100 (International). If you have a large file you can upload here. |
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