<p> Maintenance Dredging on the St. Clair River Since 1964 Year ID Location Qty Placement Area Dredge Location Note</p><p>1964 Maintenance Dredging 174,506 Assumed Open Water 1965 Maintenance Dredging 93,857 Assumed Open Water 1966 Maintenance Dredging 253,206 Assumed Open Water 1967 Maintenance Dredging 129,966 Assumed Open Water 1968 Maintenance Dredging 121,434 Assumed Open Water 1969 Maintenance Dredging 131,664 Assumed Open Water 1970 Maintenance Dredging 129,221 Assumed Open Water 1971 Maintenance Dredging 155,578 Open Water 1972 Maintenance Dredging 26,337 Open Water 1973 Maintenance Dredging 8,800 Open Water 1974 Maintenance Dredging 51,949 Open Water 1975 Maintenance Dredging 54,512 Open Water 1976 Maintenance Dredging 25,343 Dickinson Island CDF 1977 Maintenance Dredging 12,155 Dickinson Island CDF 1978 Maintenance Dredging 24,803 Dickinson Island CDF 1979 Maintenance Dredging 86,926 Dickinson Island CDF 1980 Maintenance Dredging 22,076 Dickinson Island CDF 1981 Maintenance Dredging 27,696 Dickinson Island CDF 1982 Maintenance Dredging 37,564 Dickinson Island CDF 1983 Maintenance Dredging 106,973 Dickinson Island CDF/Open Water 78,200 CDF / 28,773 Open Water 1984 Maintenance Dredging 71,795 Open Water 1985 Maintenance Dredging 71,629 Dickinson Island CDF 22,613-Russell Island/49,016 Black River 22,613 CDF / 49,016 Open Water 1986 1987 Maintenance Dredging 92,233 Dickinson Island CDF Russell Island to St. Clair Cutoff 1988 Maintenance Dredging 193,160 Dickinson Island CDF Russell Island to St. Clair Cutoff 1989 1990 Maintenance Dredging 16,500 Dickinson Island CDF Pine River Blue Water, Point Edward, Lower River 1991 1992 Maintenance Dredging 68,187 Dickinson Island CDF Russell Island, Black River, Middleground Stated that 67% of contract complete 1993 Maintenance Dredging 33,585 Dickinson Island CDF Russell Island, Black River, Middleground Assumed that 33% of remaining contract completed 1994 1995 1996 1997 1998 1999 2000 2001 Maintenance Dredging 110,600 Dickinson Island CDF Black River, Middleground, Russell Island, Peach Island 2002 2003 2004 Maintenance Dredging 23,500 Dickinson Island CDF Russell Island, Black River, Middleground 2005 Maintenance Dredging 15,772 Dickinson Island CDF Russell Island, Black River, Middleground </p>