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Curlyleaf Continues to Cause Summer Woes
Boaters, swimmers and anglers were hopeful a major blow had been dealt to curlyleaf pondweed in East Lake Okoboji when an aquatic harvester cut paths through the thick, matted patches of the invasive plant in May. However, the weed is still causing problems for swimmers and boaters this month. It has clogged motors and brought summer fun to a standstill for some.

Supervisor Tim Fairchild said he has heard from several residents who have taken to treating the weed themselves. Some of the council had heard rumblings of residents using weed killers, such as Round-Up, on the aquatic plant. Supervisor Pam Jordan stressed such use is illegal.

Some may not realize it, but Hawkins said the weed adds to water clarity in the Iowa Great Lakes by using nutrients that would otherwise contribute to the algae bloom and by dampening wave action that stirs up sediment from the lake bed. Curlyleaf also provides habitat for aquatic animals.



 
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Flooding raises pollution fears - Swamped farm fields and gorged rivers could worsen pollution worries for the flooded Lake Champlain because of the high amount of phosphorus that has washed into it. Heavy rains and snowmelt have caused the Winooski River to dump into the lake about 77 metric tons of phosphorus – that is more phosphorous than the amount that is discharged into the lake from all 60 wastewater treatment plants.


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