AUSTIN, Texas — A record number of volunteers signed up for the 25th annual Lake Travis Clean Up event Sept. 15.

According to the Colorado River Alliance, 1,200 volunteers signed up to pick up trash in and around Lake Travis and Lake Travis parks on Sunday. Scuba divers also retrieved debris from the lake.

The one time event is the group's largest event of the year. 

Executive Director Melissa Miller said volunteers helped to rid Lake Travis of tons of waste, which helps protect the area's drinking water.

"A lot of people don't realize this is where we get our drinking water from. The Highland Lakes, Lake Travis, Lake Austin – that's the Colorado River," she said.

RELATED: The legacy of our local dams: How an electrified early Austin helped shaped our lives today

RELATED: The history of the Texas Highland Lake Dams

RELATED: Explainer: How do the Highland Lakes and dams work?

Miller said every year, there is a contest among the volunteers to find the most unique piece of trash. This year, the first-place winner found a wedding ring. The second-place winner found a jet ski.

Wedding ring found during annual Lake Travis clean-up
Each year during the clean-up, the organization awards the volunteer who finds the most interesting piece of trash. This year, the most interesting "trash" was a wedding ring.
Colorado River Alliance

In 2018, the group found items such as mattresses, refrigerators and a cash register.

The Colorado River Alliance also cleans creeks throughout the year.

You can sign up online to register for next year's Lake Travis Clean Up event or go to the website donate to the organization.

VIDEO: 25th Anniversary of the Lake Travis Cleanup


Scammers targeting guests from inside Austin hotels

VERIFY: No gold star on your license? Here's what that means for Texans

Body recovered in search for missing swimmer at Pace Bend Park

Accused students identified in racist attack on black student at University of Arizona

'Sorry not doing the show': Lil Wayne backs out of St. Louis concert after incident at hotel

Police: Pennsylvania man blew up house on his daughter's wedding day