Blue Lake alum treatment caps Isanti SWCD’s protection work

Published: , in Outdoor News
ZIMMERMAN — With an alum treatment targeting in-lake phosphorus, the Isanti Soil & Water Conservation District this fall embarked upon the final phase of Clean Water Fund-supported efforts to protect Blue Lake’s water quality. “Blue Lake was teetering on becoming an imperiled, endangered lake because of too much phosphorus,” said Bill Fredell, vice president of the 147-member Blue Lake Improvement...
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