In South Florida, a polluted bubble ready to burst – ‘These coastal estuaries cannot take this. This cannot continue to happen.’Posted by Jim at Sunday, September 15, 2013
By LIZETTE ALVAREZ
8 September 2013
CLEWISTON, Florida (The New York Times) – On wind-whipped days when rain pounds this part of South Florida, people are quickly reminded that Lake Okeechobee, with its vulnerable dike and polluted waters, has become a giant environmental problem far beyond its banks.
Beginning in May, huge downpours ushered in the most significant threat in almost a decade to the bulging lake and its 80-year-old earthen dike, a turn of events with far-reaching consequences. The summer rains set off a chain reaction that devastated three major estuaries far to the east and west, distressing residents, alarming state and federal officials and prompting calls for remedial action.
With lake waters at their limit, there were only two choices, neither of them good. One was to risk breaching the 143-mile dike, a potential catastrophe to the agricultural tracts south of the lake and the small communities that depend on them. The other was to release billions of gallons of polluted water into delicate estuaries to the east and west.
Following its post-Hurricane Katrina guidelines, the Army Corps of Engineers chose the estuaries, rather than test the dike’s vulnerabilities.
As a result, the St. Lucie River estuary in the east and the Caloosahatchee River estuary in the west, which depend on a naturally calibrated balance of salt and fresh water, were overwhelmed. The rush of fresh water from the lake and the estuaries’ own river basins, along with the pollutants carried in from farms, ranches, septic tanks and golf courses, has crippled the estuaries and, on the east coast of the state, the Indian River Lagoon.
A breeding ground for marine life, estuaries are crucial to the ecosystem. As algae caused by pollutants quickly spread and fresh water overpowered saltwater, oysters died in droves. Manatees, shellfish, and the sea grasses and reefs that help sustain the estuaries all were badly hit.
“These coastal estuaries cannot take this,” said Mark D. Perry, the executive director of the Florida Oceanographic Society, based in Stuart. “Enough is enough. This cannot continue to happen. These estuaries are so important to us, our environment and our economies.”
The damage to the estuaries has been so profound and the clamor from local communities so intense that political leaders have pledged action. Gov. Rick Scott, a Republican, visited the affected areas last month and proposed spending a total of $130 million for two separate projects.