Water and Wastes Digest Case of the Week - Fri, 07/22/2011 - By Patrick J. Schnaidt
Award-winning circulation technology reduces blue-green algae.
Greenfield Lake, an idyllic cypress swamp surrounded by walking paths and bridges, is a popular recreation area in Wilmington, North Carolina. Residents and visitors enjoy picnicking, gardens, an amphitheater, boating and fishing.
But when blue-green algae took over the swamp, the water turned to pea soup and weeds grew thick along the shore. The shallow, 100-acre reservoir is primarily fed by stormwater via several drainage pipes throughout the basin. Boaters preferred to go elsewhere.