BUFFALO, N.Y. (WIVB) — The lake centered in Delaware Park is back to blue. This comes after months of algae building up around the surface and visitors complaining of it having a foul smell.

“This has been a really rough summer,” said Brian Dold, the Olmsted Parks Conservancy Director of Planning and Advocacy.

Dold says Olmsted workers have been keeping an eye on the lake and they’re glad to see a change in its coloring.

“There are fresh water wells that feed into the lake; city water that feeds it,” said Dold. “Perhaps a good, fresh flow of that helped clear up the issue.”

Dold says it all started when the weather kept warming up and no rain came.

“It’s because of the lack of oxygen in the lake,” said Dold. “It just has a potential to green up.”

Dold says the parks people are welcoming cooler temps and rain the forecast and hopes the lake’s blue hue is here to stay.

“Mother Nature helping out is certainly appreciated,” said Dold. “We love seeing a blue lake.”