It was put on by the Student Sustainability Initiative, and the theme was water conservation.
Participants had a chance to see what the university is doing to protect water sources from human-built structures.
One site on the hunt is a bioswale by Reser Stadium, where trees and shrubs help keep polluted water from running into Oak Creek.
“This bioswale has been put in to help slow down the infiltration rate of the water, and also reducing those pollutants that are coming off of this pavement,” said Andrea Carson, Water Projects Coordinator with SSI.
Last week, OSU was named a Green School in this year’s Princeton Review Guide to 332 Green Colleges.