Restoring the Great Lakes Areas of Concern Data

Progress on Canadian Great Lakes Areas of Concern
Lake	Area of concern	Initial assessment – Impaired	Initial assessment – Requires further assessment	Year	2003 – Impaired	2003 – Requires further assessment	2012 – Impaired	2012 – Requires further assessment
Superior	Thunder Bay	10	1	1991	9	0	5	5
Superior	Nipigon Bay	7	1	1991	5	0	3	1
Superior	Jackfish Bay	6	2	1991	6	1	3*	2*
Superior	Peninsula Harbour	5	1	1991	5	0	5	1
--	St. Marys River	9	1	1992	9	1	9	1
Huron	Spanish Harbour	5*	4*	1993	3*	0*	3*	0*
Huron	Severn Sound	6	2	1988	0**	0**	0**	0**
Huron	Collingwood Harbour	3	0	1989	2**	0**	2**	0**
--	St. Clair River	9	3	1991	9	3	8	3
--	Detroit River	8	0	1991	9	2	9	2
Erie	Wheatley Harbour	5	0	1998	5	1	0**	0**
--	Niagara River	8	2	1993	6	3	6	1
Ontario	Hamilton Harbour	11	1	1992	8	3	8	3
Ontario	Toronto and Region	8	1	1989	8	3	8	2
Ontario	Port Hope Harbour	1	0	2003	1	0	1	0
Ontario	Bay of Quinte	8	3	1990	10	1	9	1
--	St. Lawrence River	11	3	1992	7	3	3	0

* Area in recovery
** Restored

Note: For the complete data set from 1987 to 2012, please see the data file.

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