CLEVELAND -- Thursday marks 48 years since the last time the Cuyahoga River caught fire.

It’s credited for being the push behind the Clean Water Act.

Local leaders and conservationists gathered Thursday to highlight some of the successes since then as well as challenges still ahead.

The questions explored included, “How will climate change and threats to federal funding sources impact the significant strides made in recent decades? What can we do to protect this vital resource?”

OhioHistoryCenteral.org reports the Cuyahoga River caught fire thirteen times and was one of the most highly polluted in the nation.

GALLERY: Look back at some of the images of the Cuyahoga River before, during, and after the 1969 burning: