Becker County Sheriff Tim Gordon said arrests at WE Fest were down about 30 percent from 2008.
The three-day country music festival wrapped up with the final show Saturday night.
Gordon said there was about a 25 percent drop in arrests from 2007 to 2008.
The drop over the past two years is a result of having a high-profile presence on the WE Fest grounds.
This year, Gordon said there was one serious assault and deputies are investigating a report of a sexual assault.
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Deputies took 43 people from the WE Fest grounds to jail over five days, which includes camping days before the festival concerts began