Recent Additions | Contact Us Search: All EPA This Area

• You are here: EPA Home
• Water
• WATERS
• Water Quality Assessment and TMDL Information
• Michigan Assessment Data for 2010

---

Site-specific Targeted Monitoring Summary Results

Michigan (2010)

Description of this table

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Wetlands (Acres)	Great Lakes Shoreline (Miles)	Great Lakes Open Water (Square Miles)	Great Lakes Connecting Channel (Miles)	Inland Lake Shoreline (Miles)
Good Waters	22,715.9	561,026.8		10.3	77.6			82.2
Previously impaired waters       now attaining all uses	2,301.5	27.0			1.4			.2
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	53,723.3	311,152.2	3,136.0	701.0	3,056.7	39,031.4	111.8	4.8
TMDL completed	725.1	285.9			.6			.2
TMDL alternative	1,060.3	567.1
Non-pollutant impairment	899.4
TMDL needed	51,038.5	310,299.2	3,136.0	701.0	3,056.1	39,031.4	111.8	4.6
Total Assessed Waters	76,439.1	872,179.0	3,136.0	711.3	3,134.3	39,031.4	111.8	87.0
Total Waters	52,234.0	889,600.0	Unavailable	6,239,763.0	3,250.0	Unavailable	Unavailable	Unavailable
Percent of Waters Assessed	146.3	98.0	Unavailable	.0	96.4	Unavailable	Unavailable	Unavailable

Top of page

---

Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2010

Site-specific Targeted Monitoring Results

Michigan Rivers and Streams 2010

Description of this table Assessed Status Miles Assessed 76,439.1 Unassessed -24,205.1 Total Miles 52,234.0

Description of this table Attainment Status Miles Good 22,715.9 Threatened .0 Impaired 53,723.3 Total Miles Assessed 76,439.1

Description of this table TMDL Development Status Miles All TMDLs completed 725.1 TMDL alternative 1,060.3 Non-pollutant impairment 899.4 TMDL needed 51,038.5 Total Threatened and Impaired 53,723.3

Top of page

Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Rivers and Streams 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agriculture	76,439.1	100.0	.0	.0
Cold Water Fishery	6,211.3	95.4	.0	4.6
Fish Consumption	53,217.2	3.6	.0	96.4
Industrial Water Supply	76,439.1	100.0	.0	.0
Navigation	76,439.1	100.0	.0	.0
Other Indigenous Aquatic Life	57,457.5	82.1	.0	17.9
Partial Body Contact Recreation	3,344.6	1.5	.0	98.5
Public Water Supply	17.1	.0	.0	100.0
Total Body Contact Recreation	3,935.7	14.7	.0	85.3
Warm Water Fishery	10,769.1	78.7	.0	21.3

Top of page

Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Rivers and Streams 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
PCB in Water Column	Polychlorinated Biphenyls (PCBs)	49,550.6
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	21,923.6
Mercury in Fish Tissue	Mercury	6,449.6
Mercury in Water Column	Mercury	5,800.3
Other Flow Regime Alterations	Flow Alteration(s)	3,579.2
Escherichia Coli (E. Coli)	Pathogens	3,358.9
Other Anthropogenic Substrate Alterations	Habitat Alterations	2,002.0
Sedimentation/Siltation	Sediment	1,922.3
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	1,412.8
Direct Habitat Alterations	Habitat Alterations	735.8
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	726.5
Phosphorus, Total	Nutrients	580.7
Polybrominated Biphenyls	Toxic Organics	189.0
DDT	Pesticides	189.0
Chlordane	Pesticides	172.4
Cause Unknown	Cause Unknown	140.9
Copper	Metals (other than Mercury)	95.8
Excess Algal Growth	Algal Growth	80.5
Organic Enrichment (Sewage) Biological Indicators	Organic Enrichment/Oxygen Depletion	76.0
Nutrient/Eutrophication Biological Indicators	Nutrients	43.1
Oil and Grease	Oil and Grease	37.7
Bacterial Slimes	Pathogens	30.3
Temperature, Water	Temperature	30.2
Aquatic Plants - Native	Nuisance Native Species	24.8
Selenium	Metals (other than Mercury)	20.2
Nitrogen, Total	Nutrients	17.1
Solids (Suspended/Bedload)	Sediment	16.8
Chromium, Total	Metals (other than Mercury)	16.8
Lead	Metals (other than Mercury)	16.8
Total Suspended Solids (TSS)	Turbidity	13.5
Fish Kill(s)	Cause Unknown - Fish Kills	11.9
Petroleum Hydrocarbons	Oil and Grease	10.3
Physical Substrate Habitat Alterations	Habitat Alterations	9.6
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	8.2
Alterations in Wetland Habitats	Habitat Alterations	5.9
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	4.6
Aquatic Plants (Macrophytes)	Noxious Aquatic Plants	3.2

Top of page

Site-specific Targeted Monitoring Results

Probable Sources
Michigan Rivers and Streams 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Atmospheric Deposition - Toxics	Atmospheric Deposition	51,885.7
Source Unknown	Unknown	4,252.3
Channelization	Hydromodification	3,232.3
Agriculture	Agriculture	2,184.9
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	1,666.6
Combined Sewer Overflows	Municipal Discharges/Sewage	1,532.7
Illicit Connections/Hook-Ups To Storm Sewers	Municipal Discharges/Sewage	1,520.4
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	1,469.6
Municipal (Urbanized High Density Area)	Urban-Related Runoff/Stormwater	989.7
Post-Development Erosion And Sedimentation	Hydromodification	802.6
Streambank Modifications/Destabilization	Hydromodification	783.8
Contaminated Sediments	Legacy/Historical Pollutants	775.7
Municipal Point Source Discharges	Municipal Discharges/Sewage	704.1
Non-Point Source	Unspecified Nonpoint Source	545.5
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	447.0
Sewage Discharges In Unsewered Areas	Municipal Discharges/Sewage	418.1
Industrial Point Source Discharge	Industrial	355.3
Industrial/Commercial Site Stormwater Discharge (Permitted)	Urban-Related Runoff/Stormwater	320.7
Habitat Modification - Other Than Hydromodification	Habitat Alterations (Not Directly Related To Hydromodification)	189.5
Livestock (Grazing Or Feeding Operations)	Agriculture	188.3
Waterfowl	Natural/Wildlife	124.5
Loss Of Riparian Habitat	Habitat Alterations (Not Directly Related To Hydromodification)	119.9
Unpermitted Discharge (Domestic Wastes)	Municipal Discharges/Sewage	119.5
Wet Weather Discharges (Non-Point Source)	Urban-Related Runoff/Stormwater	116.6
Sources Outside State Jurisdiction Or Borders	Other	102.2
Subsurface (Hardrock) Mining	Resource Extraction	84.8
Non-Irrigated Crop Production	Agriculture	79.3
Dry Weather Flows With Nps Pollutants	Urban-Related Runoff/Stormwater	76.5
Animal Feeding Operations (Nps)	Agriculture	63.6
Mine Tailings	Resource Extraction	63.3
Natural Sources	Natural/Wildlife	61.2
Sanitary Sewer Overflows (Collection System Failures)	Municipal Discharges/Sewage	58.8
Wastes From Pets	Urban-Related Runoff/Stormwater	57.2
Dam Or Impoundment	Hydromodification	41.4
Unrestricted Cattle Access	Agriculture	25.6
Upstream Impoundments (E.G., Pl-566 Nrcs Structures)	Hydromodification	24.4
Impervious Surface/Parking Lot Runoff	Urban-Related Runoff/Stormwater	24.3
Internal Nutrient Recycling	Natural/Wildlife	20.7
Landfills	Land Application/Waste Sites/Tanks	20.7
Surface Mining	Resource Extraction	20.2
Highways, Roads, Bridges, Infrastructure (New Construction)	Construction	15.8
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso)	Municipal Discharges/Sewage	14.1
Wildlife Other Than Waterfowl	Natural/Wildlife	11.4
Crop Production With Subsurface Drainage	Agriculture	10.7
Petroleum/Natural Gas Activities	Resource Extraction	10.3
Site Clearance (Land Development Or Redevelopment)	Construction	9.5
Contaminated Groundwater	Groundwater Loadings/Withdrawals	5.5
Golf Courses	Recreation And Tourism (Non-Boating)	4.2
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	4.2
Impacts From Land Application Of Wastes	Land Application/Waste Sites/Tanks	4.1
Mill Tailings	Industrial	2.5
Hydrostructure Impacts On Fish Passage	Hydromodification	2.3
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	2.3
Permitted Runoff From Confined Animal Feeding Operations (Cafos)	Agriculture	2.2

Top of page

---

Site-specific Targeted Monitoring Results

Michigan Lakes, Reservoirs, and Ponds 2010

Description of this table Assessed Status Acres Assessed 872,179.0 Unassessed 17,421.0 Total Acres 889,600.0

Description of this table Attainment Status Acres Good 561,026.8 Threatened .0 Impaired 311,152.2 Total Acres Assessed 872,179.0

Description of this table TMDL Development Status Acres All TMDLs completed 285.9 TMDL alternative 567.1 Non-pollutant impairment .0 TMDL needed 310,299.2 Total Threatened and Impaired 311,152.2

Top of page

Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Lakes, Reservoirs, and Ponds 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agriculture	872,179.0	100.0	.0	.0
Cold Water Fishery	130,662.9	100.0	.0	.0
Fish Consumption	343,628.5	9.7	.0	90.3
Industrial Water Supply	872,179.0	100.0	.0	.0
Navigation	871,347.2	100.0	.0	.0
Other Indigenous Aquatic Life	438,124.9	97.9	.0	2.1
Partial Body Contact Recreation	1,088.7	.0	.0	100.0
Total Body Contact Recreation	1,088.7	.0	.0	100.0
Warm Water Fishery	1,376.1	78.6	.0	21.4

Top of page

Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Lakes, Reservoirs, and Ponds 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Mercury in Fish Tissue	Mercury	242,852.5
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	144,704.4
Chlordane	Pesticides	32,945.1
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	19,944.7
Phosphorus, Total	Nutrients	6,048.2
Excess Algal Growth	Algal Growth	4,284.2
Copper	Metals (other than Mercury)	3,174.2
Nutrient/Eutrophication Biological Indicators	Nutrients	1,177.4
Escherichia Coli (E. Coli)	Pathogens	1,088.7
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems)	Toxic Organics	480.4
Zinc	Metals (other than Mercury)	480.4
PCB in Water Column	Polychlorinated Biphenyls (PCBs)	125.0
Polybrominated Biphenyls	Toxic Organics	86.0
Mercury in Water Column	Mercury	86.0
DDT	Pesticides	86.0

Top of page

Site-specific Targeted Monitoring Results

Probable Sources
Michigan Lakes, Reservoirs, and Ponds 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Atmospheric Deposition - Toxics	Atmospheric Deposition	310,257.7
Source Unknown	Unknown	16,990.6
Contaminated Sediments	Legacy/Historical Pollutants	8,700.4
Non-Point Source	Unspecified Nonpoint Source	5,461.6
Municipal Point Source Discharges	Municipal Discharges/Sewage	4,918.6
Agriculture	Agriculture	4,284.2
Mine Tailings	Resource Extraction	2,693.8
Industrial Point Source Discharge	Industrial	1,375.4
Combined Sewer Overflows	Municipal Discharges/Sewage	969.4
Internal Nutrient Recycling	Natural/Wildlife	420.0
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	257.5
Sewage Discharges In Unsewered Areas	Municipal Discharges/Sewage	119.3
Site Clearance (Land Development Or Redevelopment)	Construction	2.0

Top of page

---

Site-specific Targeted Monitoring Results

Michigan Bays and Estuaries 2010

Description of this table Pie chart not displayed because total size for Bays and Estuaries is unavailable. Assessed Status Square Miles Assessed 3,136.0 Unassessed Unavailable Total Square Miles Unavailable

Description of this table Attainment Status Square Miles Good .0 Threatened .0 Impaired 3,136.0 Total Square Miles Assessed 3,136.0

Description of this table TMDL Development Status Square Miles All TMDLs completed .0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 3,136.0 Total Threatened and Impaired 3,136.0

Top of page

Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Bays and Estuaries 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Square Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agriculture	3,136.0	100.0	.0	.0
Fish Consumption	3,136.0	.0	.0	100.0
Industrial Water Supply	3,136.0	100.0	.0	.0
Navigation	3,136.0	100.0	.0	.0
Other Indigenous Aquatic Life	280.0	100.0	.0	.0
Public Water Supply	3.0	.0	.0	100.0

Top of page

Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Bays and Estuaries 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	3,136.0
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	3,075.0
Mercury in Fish Tissue	Mercury	3,040.5
Chlordane	Pesticides	283.0
Taste and Odor	Taste, Color and Odor	3.0
Phosphorus, Total	Nutrients	3.0
Nutrient/Eutrophication Biological Indicators	Nutrients	3.0

Top of page

Site-specific Targeted Monitoring Results

Probable Sources
Michigan Bays and Estuaries 2010

Description of this table

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Atmospheric Deposition - Toxics	Atmospheric Deposition	3,136.0
Contaminated Sediments	Legacy/Historical Pollutants	1,136.5
Industrial Point Source Discharge	Industrial	3.0
Non-Point Source	Unspecified Nonpoint Source	3.0
Municipal Point Source Discharges	Municipal Discharges/Sewage	3.0

Top of page

---

Site-specific Targeted Monitoring Results

Michigan Wetlands 2010

Description of this table Assessed Status Acres Assessed 711.3 Unassessed 6,239,051.8 Total Acres 6,239,763.0

Description of this table Attainment Status Acres Good 10.3 Threatened .0 Impaired 701.0 Total Acres Assessed 711.3

Description of this table TMDL Development Status Acres All TMDLs completed .0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 701.0 Total Threatened and Impaired 701.0

Top of page

Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Wetlands 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agriculture	711.3	100.0	.0	.0
Fish Consumption	701.0	.0	.0	100.0
Industrial Water Supply	711.3	100.0	.0	.0
Navigation	711.3	100.0	.0	.0
Other Indigenous Aquatic Life	10.0	100.0	.0	.0
Partial Body Contact Recreation	21.0	.0	.0	100.0
Total Body Contact Recreation	21.0	.0	.0	100.0

Top of page

Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Wetlands 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	701.0
Escherichia Coli (E. Coli)	Pathogens	21.0
PCB in Water Column	Polychlorinated Biphenyls (PCBs)	21.0

Top of page

Site-specific Targeted Monitoring Results

Probable Sources
Michigan Wetlands 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Atmospheric Deposition - Toxics	Atmospheric Deposition	701.0
Landfills	Land Application/Waste Sites/Tanks	680.0
Sewage Discharges In Unsewered Areas	Municipal Discharges/Sewage	21.0

Top of page

---

Site-specific Targeted Monitoring Results

Michigan Great Lakes Shoreline 2010

Description of this table Assessed Status Miles Assessed 3,134.3 Unassessed 115.7 Total Miles 3,250.0

Description of this table Attainment Status Miles Good 77.6 Threatened .0 Impaired 3,056.7 Total Miles Assessed 3,134.3

Description of this table TMDL Development Status Miles All TMDLs completed .6 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 3,056.1 Total Threatened and Impaired 3,056.7

Top of page

Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Great Lakes Shoreline 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agriculture	3,131.3	100.0	.0	.0
Fish Consumption	3,052.0	.0	.0	100.0
Industrial Water Supply	3,131.3	100.0	.0	.0
Navigation	3,131.3	100.0	.0	.0
Other Indigenous Aquatic Life	4.2	100.0	.0	.0
Partial Body Contact Recreation	76.4	94.4	.0	5.6
Total Body Contact Recreation	27.5	82.7	.0	17.3

Top of page

Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Great Lakes Shoreline 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	3,052.0
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	2,963.0
Mercury in Fish Tissue	Mercury	2,064.0
Chlordane	Pesticides	1,975.0
DDT	Pesticides	529.0
Escherichia Coli (E. Coli)	Pathogens	4.7

Top of page

Site-specific Targeted Monitoring Results

Probable Sources
Michigan Great Lakes Shoreline 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Atmospheric Deposition - Toxics	Atmospheric Deposition	3,052.0
Agriculture	Agriculture	529.0
Sanitary Sewer Overflows (Collection System Failures)	Municipal Discharges/Sewage	3.0
Source Unknown	Unknown	1.0
Illicit Connections/Hook-Ups To Storm Sewers	Municipal Discharges/Sewage	.6
Waterfowl	Natural/Wildlife	.4
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	.2
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso)	Municipal Discharges/Sewage	.2
Municipal Point Source Discharges	Municipal Discharges/Sewage	.1

Top of page

---

Site-specific Targeted Monitoring Results

Michigan Great Lakes Open Water 2010

Description of this table Pie chart not displayed because total size for Great Lakes Open Water is unavailable. Assessed Status Square Miles Assessed 39,031.4 Unassessed Unavailable Total Square Miles Unavailable

Description of this table Attainment Status Square Miles Good .0 Threatened .0 Impaired 39,031.4 Total Square Miles Assessed 39,031.4

Description of this table TMDL Development Status Square Miles All TMDLs completed .0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 39,031.4 Total Threatened and Impaired 39,031.4

Top of page

Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Great Lakes Open Water 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Square Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agriculture	39,031.4	100.0	.0	.0
Fish Consumption	39,031.4	.0	.0	100.0
Industrial Water Supply	39,031.4	100.0	.0	.0
Navigation	39,031.4	100.0	.0	.0

Top of page

Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Great Lakes Open Water 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	39,031.4
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	38,862.0
Mercury in Fish Tissue	Mercury	29,816.4
Chlordane	Pesticides	29,660.5
DDT	Pesticides	4,397.0

Top of page

Site-specific Targeted Monitoring Results

Probable Sources
Michigan Great Lakes Open Water 2010

Description of this table

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Atmospheric Deposition - Toxics	Atmospheric Deposition	39,031.4
Agriculture	Agriculture	4,373.0

Top of page

---

Site-specific Targeted Monitoring Results

Michigan Great Lakes Connecting Channel 2010

Description of this table Pie chart not displayed because total size for Great Lakes Connecting Channel is unavailable. Assessed Status Miles Assessed 111.8 Unassessed Unavailable Total Miles Unavailable

Description of this table Attainment Status Miles Good .0 Threatened .0 Impaired 111.8 Total Miles Assessed 111.8

Description of this table TMDL Development Status Miles All TMDLs completed .0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 111.8 Total Threatened and Impaired 111.8

Top of page

Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Great Lakes Connecting Channel 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agriculture	111.8	100.0	.0	.0
Fish Consumption	111.8	.0	.0	100.0
Industrial Water Supply	111.8	100.0	.0	.0
Navigation	111.8	100.0	.0	.0
Other Indigenous Aquatic Life	111.8	.0	.0	100.0
Partial Body Contact Recreation	111.8	29.8	.0	70.2
Total Body Contact Recreation	111.8	29.8	.0	70.2

Top of page

Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Great Lakes Connecting Channel 2010

No causes of impairment reported.

Top of page

Site-specific Targeted Monitoring Results

Probable Sources
Michigan Great Lakes Connecting Channel 2010

No probable sources of impairments reported.

Top of page

---

Site-specific Targeted Monitoring Results

Michigan Inland Lake Shoreline 2010

Description of this table Pie chart not displayed because total size for Inland Lake Shoreline is unavailable. Assessed Status Miles Assessed 87.0 Unassessed Unavailable Total Miles Unavailable

Description of this table Attainment Status Miles Good 82.2 Threatened .0 Impaired 4.8 Total Miles Assessed 87.0

Description of this table TMDL Development Status Miles All TMDLs completed .2 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 4.6 Total Threatened and Impaired 4.8

Top of page

Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Inland Lake Shoreline 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agriculture	87.0	100.0	.0	.0
Industrial Water Supply	87.0	100.0	.0	.0
Navigation	87.0	100.0	.0	.0
Partial Body Contact Recreation	68.8	95.1	.0	4.9
Total Body Contact Recreation	21.0	77.1	.0	22.9

Top of page

Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Inland Lake Shoreline 2010

No causes of impairment reported.

Top of page

Site-specific Targeted Monitoring Results

Probable Sources
Michigan Inland Lake Shoreline 2010

No probable sources of impairments reported.

Top of page

---

Michigan Causes of Impairment for Reporting Year 2010

Description of this table

NOTE: Click on the underlined Cause of Impairment Group to see a list of specific state causes of impairment making up the Cause of Impairment Group. See also Pollution categories summary document (PDF) (20 pp, 557K, About PDF) for brief, non-technical descriptions of general cause categories.
Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Wetlands (Acres)	Great Lakes Shoreline (Miles)	Great Lakes Open Water (Square Miles)	Great Lakes Connecting Channel (Miles)	Inland Lake Shoreline (Miles)
Algal Growth	80.5	4,284.2
Cause Unknown	140.9
Cause Unknown - Fish Kills	11.9
Dioxins	726.5	19,944.7	3,075.0		2,963.0	38,862.0
Flow Alteration(s)	3,579.2
Habitat Alterations	2,753.3
Mercury	11,832.8	242,852.5	3,040.5		2,064.0	29,816.4
Metals (other than Mercury)	116.0	3,174.2
Noxious Aquatic Plants	3.2
Nuisance Native Species	24.8
Nutrients	640.9	6,048.2	3.0
Oil and Grease	37.7
Organic Enrichment/Oxygen Depletion	1,467.8
Pathogens	3,389.2	1,088.7		21.0	4.7
Pesticides	361.3	33,031.1	283.0		1,975.0	29,660.5
Polychlorinated Biphenyls (PCBs)	50,337.4	144,829.4	3,136.0	701.0	3,052.0	39,031.4
Salinity/Total Dissolved Solids/Chlorides/Sulfates	8.2
Sediment	1,922.3
Taste, Color and Odor			3.0
Temperature	30.2
Toxic Organics	189.0	566.4
Turbidity	13.5

Top of page

---

Michigan Probable Sources Contributing to Impairments
for Reporting Year 2010

Description of this table

NOTE: Click on the underlined Probable Source Group to see a list of specific state Probable Sources making up the Probable Source Group.
Probable Source Group	Size of Assessed Waters with Probable Sources of Impairments
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Wetlands (Acres)	Great Lakes Shoreline (Miles)	Great Lakes Open Water (Square Miles)	Great Lakes Connecting Channel (Miles)	Inland Lake Shoreline (Miles)
Agriculture	2,266.3	4,284.2			529.0	4,373.0
Atmospheric Deposition	51,885.7	310,257.7	3,136.0	701.0	3,052.0	39,031.4
Construction	21.7	2.0
Groundwater Loadings/Withdrawals	5.5
Habitat Alterations (Not Directly Related To Hydromodification)	283.8
Hydromodification	4,120.1
Industrial	357.9	1,375.4	3.0
Land Application/Waste Sites/Tanks	24.8			680.0
Legacy/Historical Pollutants	775.7	8,700.4	1,136.5
Municipal Discharges/Sewage	3,211.6	6,007.3	3.0	21.0	3.7
Natural/Wildlife	217.8	420.0			.4
Other	102.2
Recreation And Tourism (Non-Boating)	4.2
Resource Extraction	178.6	2,693.8
Unknown	4,252.3	16,990.6			1.0
Unspecified Nonpoint Source	545.5	5,461.6	3.0
Urban-Related Runoff/Stormwater	2,304.6	257.5

Top of page

---

Michigan TMDL Alternatives by Cause of Impairment 2010

Description of this table

NOTE: Click on the underlined "Number of TMDL Alternatives by Cause of Impairment " value to see a listing of those Causes of Impairment.
Cause of Impairment	Number of TMDL Alternatives	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Great Lakes Connecting Channel (Miles)
PCB(s) in Fish Tissue	48	1,675	87
PCB in Water Column	44	1,609
DDT	9	189	86
Polybrominated Biphenyls	9	189	86
Copper	4	5	3,139
Dissolved Oxygen	4	7
Nutrient/Eutrophication Biological Indicators	2			3
Phosphorus, Total	2			3
Taste and Odor	2			3
Escherichia Coli (E. Coli)	1	3
Mercury in Fish Tissue	1		87
Mercury in Water Column	1	1
Organic Enrichment (Sewage) Biological Indicators	1	2
Polychlorinated Biphenyls (PCBs)	1	3
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems)	1		480
Temperature, Water	1	0
Zinc	1		480

Total: 132 TMDL Alternatives

Top of page

---

• EPA Home
• Privacy and Security Notice
• Contact Us