The last two decades have been remarkable ones in the comeback of the Milwaukee River. And while some of that comeback is in an environmental sense, right in the middle of the bigger picture of the river's comeback story was Gary Grunau. Grunau spearheaded the redevelopment of Schlitz Park and the Riverwalk District.
The 20th annual cleanup attracted up to 4,000 volunteers, according to Milwaukee Riverkeeper. In the Kinnickinnic River, bagging debris and tire removal was combined with learning the science of the river.