Great Lakes Videos: May 18, 2012 For links to these videos and more, visit http://www.great-lakes.net/news/video/ Michigan's oldest lighthouse to reopen Saturday after renovation ------------------------------------------------- The Ft. Gratiot Light, Michigan's oldest lighthouse, reopens Saturday after four years and $700,000 in gentle renovations. Source: Detroit Free Press (5/18) Grand River listed among most endangered in nation ------------------------------------------------- The Grand River, which empties into Lake Erie in Ohio's Fairport Harbor, has been named one of the most endangered rivers in the country. Source: The News-Herald (5/15) Grand Haven Pier deteriorating ------------------------------------------------- The pier along Lake Michigan in Grand Haven, Mich., is deteriorating and the U.S. Army Corps of Engineers is urging people to be cautious. Source: WZZM-13 - West Michigan (5/14) Aquatic invasive species - Minnesota waters at risk ------------------------------------------------- The Minnesota Department of Natural Resources provides an overview of the aquatic invasive species that jeopardize recreation and the delicate ecological order of the state's rich outdoor heritage. Source: Minnesota DNR (5/14)