It turns out that you can’t dam a creek to make it better for campers, at least not without a bevy of permits.

Acting United States Attorney Randolph J. Seiler said Glencoe CampResort II LLC of rural Meade County, S.D., and Sean Clark from Hacienda Heights, Calif., pled guilty and were sentenced for violations of the federal Clean Water Act, television station KDLT reported.

Clark pled guilty to knowing discharge of a pollutant into water.

Glencoe CampResort II LLC, through its managing partner Devorah Lopez, pled guilty to negligent discharge of a pollutant into water.

Clark and Glencoe CampResort II were each sentenced to four years of probation, and a fine and community service payment of $250,000. Clark will also be required to perform 100 hours of community service in South Dakota.

According to the U.S. Environmental Protection Agency, Lopez owns the 400-acre campground and Clark operates it. It’s a popular site during the annual Sturgis Motorcycle Rally, and Bear Butte Creek runs through the campground.

In 2012, Clark and Lopez used fill dirt to install a dam across the creek to create a water feature for use by campers during the rally, according to the EPA. In addition to the 75-by-20-by-6-foot dam, the campground installed two levees and constructed recreational swim beaches — all without permission, the EPA reported.

In July the state and the U.S. Army Corps of Engineers  ordered them to remove the dam before Aug. 2, and they removed the dam in August, according to the EPA, but didn’t restore the site as of last December.

According to the Clean Water Act, putting fill material in the creek qualifies as “discharge of pollutants,” the EPA said in its order on the case.

For the KDLT story, click here.

For the EPA information, click here.