GLEN ARBOR, Mich. (Michigan News Source) – U.S. Park Rangers at Sleeping Bear National Lakeshore are asking for help from anyone with information regarding what they are calling an “illegal diversion” of the Platte River.

Visitors who may have observed this activity on August 14 or 15 are encouraged to share the information with investigators.

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An anonymous tip line has been set up; people can call or text the tip line at 888-653-0009.