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Changes on the St. Croix River, a federally protected U.S. Wild and Scenic River since 1968, will be the subject at a forum next week featuring former Vice President Walter Mondale as keynote speaker.

Among the issues to be explored during the May 21 event in Stillwater is the outlook for the river in the 21st century. In addition to Mondale, who co-sponsored the Wild and Scenic Rivers Act as a U.S. senator, representatives of the National Park Service, the state Department of Natural Resources, and the Legislature will participate.

The event begins at 7 p.m. at the Water Street Inn and is free and open to the public. It is sponsored by the Friends of Washington County, the Friends of the St. Croix Boom Site and the St. Croix River Association.