MADISON, Wis. -- A design featuring two silhouetted children splashing on a swimming beach is the winner of 2010 Wisconsin State Park admission sticker contest.

The state Department of Natural Resources said Margaret Willden's creation was selected from more than 340 entries. She is a junior at Cedarburg High School.

The director of state parks, Dan Schuller, said Willden's design will be printed on state park and forest annual admission stickers that go on sale in December and are expected to be displayed on more than 150,000 vehicles next year.

Runners-up in the 2010 contest were John Springer of Iowa-Grant High School and Sam La Barre of Cedarburg High School.

For her winning entry, Willden receives an engraved plaque, a state trail pass, and a 2010 state park admission sticker.