City officials said Thursday that the work to take out the Fifth Avenue dam is progressing.
Crews took out part of the dam along the Olentangy River to create a more natural water flow.
Columbus public utilities want to turn the area into wetlands and replant native plants along the waterway.
"We consider this an ecological restoration. This has been recognized by the Ohio EPA as the worst two miles of river. Basically, the river created a lake effect," said Laura Fay, board bember at Friends of the Lower Olentangy Watershed.
That caused a lot of buildup of sediment which created a toxic effect.
Now with more water running through the area, the hope is the ecosystem will return to normal.
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August 20, 2012: Dam Removal Under Way
November 3, 2011: City Council Approves $500K To Remove Fifth Avenue Dam