Alliance for the Great Lakes The intervening years saw some contraction, until the appointment of Glenda Daniel as executive director in 1986. During her tenure, the Lake Michigan Federation opened offices in Muskegon, Milwaukee and Green Bay, with its original headquarters remaining in Chicago. With the U.S. and Canada signing a major amendment to the U.S.-Canada Great Lakes Water Quality Agreement in 1987, which among other things allowed for the designation of toxic hotspot "Areas of Concern," the Federation made a significant push to empower local communities in these "AOCs" to seek support for the implementation of cleanups. After Daniel's resignation in 1992, again, the
Largest shipwrecks on the Great Lakes known. The Great Lakes Shipwreck Museum estimates that about 6,000 shipwrecks lie beneath the surface of the lakes, while maritime historian Mark Thompson reckons that more than 25,000 shipwrecks are located in the waters of the Great Lakes. ! scope="col"|Ship ! scope="col"|In service ! scope="col"|Out of service ! scope="col"|Length (ft) ! scope="col"|Vessel type ! scope="col"|Launched ! scope="col"|Final disposition ! scope="col"|Notes ! scope="col"|Coordinates !scope="row"|"SS Leecliffe Hall !scope="row"|"SS Edmund Fitzgerald !scope="row"|"SS Carl D. Bradley !scope="row"|"SS Daniel J. Morrell !scope="row"|"SS William C Moreland !scope="row"|"SS Cedarville !scope="row"|"SS Chester A. Congdon !scope="row"|"SS D.R. Hanna !scope="row"|"SS James C. Carruthers !scope="row"|"SS Henry B. Smith !scope="row"|"SS Emperor !scope="row"|"SS