A sign of shelter is seen under dark clouds as hurricane "Irma" is approaching Philip Rivers Chargers Jersey , in Miami, Florida, the United States, Sept. 9, 2017. (XinhuaYin Bogu)
by Matthew Rusling
MIAMI, the United States, Sept. 13 (Xinhua ) -- Lifelong Miami resident Karina Castillo remembered clearly a clear, sunny day last year, when high tides flooded a street in a local neighborhood.
"I was standing in water during high tide Antonio Gates Youth Jersey , on the street, and the water was still knee deep," she said.
That was many months before Hurricane Irma ravaged the city and made streets look like rivers, as the massive storm hit the city of Miami in the U.S. state of Florida over the weekend and grabbed nationwide headlines.
But experts said that hurricanes are not the main threat to the low-lying city, as rising sea levels threaten to put communities permanently under water.
For the first time in recorded history, ocean levels are rising, after being stable for the last 5,000 or 6,000 years. The U.S. National Ocean Service said global sea levels will likely continue to rise Dan Fouts Youth Jersey , and Miami residents said flooding due to rising sea level has worsened over the years.
High tides -- sometimes called king tides -- even on clear, sunny days, can cause floodwaters to seep upward to street level through Miami's drainage system. That's because the city is built on a bed of limestone, which is porous and allows water to seep upward to street level.
For communities in Miami, flooding, even by a few feet, can have a serious impact. Flooded streets can cause businesses to shutter for days at a time, impacting their bottom line, as well as employees' paychecks.
The elderly are particularly impacted Rayshawn Jenkins Youth Jersey , as they can miss important doctors' appointment or treatments, if vehicles are unable to traverse flooded streets to pick them up.