Ft. Pierce, Florida

This is a 20 acre pond in Ft. Pierce, just west of the Indian River that collects stormwater from the southern half of the city and agricultural areas to the west.  In 2014, we installed 12 floating wetland islands, each 3,520 square ft. in size, to cover approximately 5% of the pond surface, totaling 42,240 square ft. 

Initially, the islands were planted with freshwater species, but we have converted the vegetative cover to halophytes during the past year in response to salt water intrusion during droughts and hurricanes. The nutrient removal rates have been consistent over the past three years, averaging about 190 g N/sq. m./yr. and 21 g P/ sq. m./ yr.