<img class="styles__noscript__2rw2y" src="https://dsx.weather.com//util/image/w/ap_246444355146_1.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0" srcset="https://dsx.weather.com//util/image/w/ap_246444355146_1.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 400w, https://dsx.weather.com//util/image/w/ap_246444355146_1.jpg?v=ap&w=980&h=551&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 800w" > A resident wades through flood water at Tiger Manor Apartments by the North Gates of LSU, Saturday, Aug. 13, 2016, in Baton Rouge, Louisiana. (Brianna Paciorka/The Advocate via AP) (Brianna Paciorka/The Advocate via AP)

At a Glance Many Baton Rouge residents found themselves trapped Sunday morning by floodwaters.

Many could not call for help when landlines went down and cellphone batteries died. Though it wasn't the fault of a bad forecast, the magnitude of floods that devastated parts of Louisiana over the weekend caught many Baton Rouge residents by surprise.

According to a report by the Advocate, many residents were simply caught off guard by how quickly the floodwaters rose in some areas of the city.

Leigh Beoubay told the paper that when she went to bed Saturday night at her residence off O'Neal Lane, the waters were pooling in the street in front of her home, but by morning, the water was inside her house and the level quickly rose to four feet. Her family had to wait four hours inside the home, with no electricity or phone service, until she and her family were rescued by a man in a boat.

(WATCH: Woman, Dog Pulled From Car in Louisiana Flood )

Beoubay's story was not uncommon Sunday in southeastern Baton Rouge.

Residents who are all too familiar with flooding in the area found themselves trapped in their flooded homes with no way to reach outside help. Landlines were down, and without electricity, there was no way to charge dying cellphones. Many had to wait patiently until a boat passed their home and they could be taken to safety.

Retired LSU sports announcer Jim Hawthorne and his wife Carol found themselves in a similar situation. He told the Times-Picayune that he "kept clinging to the idea that this couldn't happen to me ."

He and his wife were eventually rescued Sunday afternoon amid rumors that the couple had gone missing when no one could reach them by phone.

By Sunday afternoon, more than 2,000 evacuees arrived at Baton Rouge's Celtic Media Centre after boatloads of stunned people were rescued by civilians and members of the National Guard.

(MORE: Death Toll Rises in Historic Louisiana Flooding; 20,000 Rescued )

The Tribune reported that rescuers were hindered by the intermittent pattern of flooding, with deep lake-like pools separated by dry stretches of road, making it impossible to reach people by water.

As the floodwaters move further south, other areas could be in for a similar situation. The Amite River at French Settlement was expected to crest at 8.7 feet either Monday evening or Tuesday morning, along with many of its tributaries, according to the Advocate.

Although additional expected rain will not have much impact on river levels, it could contribute to localized flooding.

“The biggest problem is going to be for the backwater areas because the rivers won’t allow it to drain,” Jeff Grashel, National Weather Service hydrologist, told the Advocate. "Because this is such a historic event, it’s going to be difficult to see how this extra water might move over the land."

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