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On This Page 303(d) Listed Waters for 2008

Data are also available for these cycles:
2002 2004 2006 2010

Waterbody Changes from Prior Cycle

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Michigan Water Quality Assessment Report

Assessed Waters of Michigan by Watershed

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Display impaired waters and TMDL information only



Site-specific Targeted Monitoring Summary Results

Michigan (2008)

Description of this table
 
    12,501.1 527,135.2 10.3 74.6 66.0
       3,808.5 27.0 1.4 .2
   
                                         
                                         
                                         
                                         
    39,732.4 297,596.5 701.0 6.1 42,167.4 111.8 4.0
           681.5     1,060.3          .6               .2
           843.1     567.1                         
           3,117.2                              
           35,090.6     295,969.1     701.0     5.5     42,167.4     111.8     3.8
              82.7     554.0     .0     .0     .0     .0     .2
                    35,007.9           295,415.1           701.0           5.5           42,167.4           111.8           3.6
52,233.5 824,731.7 711.3 80.7 42,167.4 111.8 70.0
52,234.0 889,600.0 6,239,763.0 3,250.0 Unavailable Unavailable Unavailable
100.0 92.7 .0 2.5 Unavailable Unavailable Unavailable

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2008


Site-specific Targeted Monitoring Results

Michigan Rivers and Streams 2008

Description of this table

All
Rivers and Streams

52,234.0 Miles of Rivers and Streams

Assessed 52,233.5
Unassessed .5
Total Miles 52,234.0







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Description of this table

Assessed
Rivers and Streams

52,233.5 Miles of
Assessed Rivers and Streams

Good 12,501.1
Threatened .0
Impaired 39,732.4
Total Miles Assessed 52,233.5







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Description of this table

Threatened and Impaired
Rivers and Streams

39,732.4 Miles of
Threatened and Impaired
Rivers and Streams

764.2
843.1
3,117.2
35,007.9
Total Threatened and Impaired 39,732.4

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Rivers and Streams 2008

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

Description of this table
% Good
% Threatened
% Impaired
Agriculture 52,233.5 100.0 .0 .0 color.gif
Cold Water Fishery 3,780.1 93.2 .0 6.8 color.gifcolor.gif
Fish Consumption 36,807.7 3.3 .0 96.7 color.gifcolor.gif
Industrial Water Supply 52,233.5 100.0 .0 .0 color.gif
Navigation 52,233.5 100.0 .0 .0 color.gif
Other Indigenous Aquatic Life 42,332.4 60.1 .0 39.9 color.gifcolor.gif
Partial Body Contact Recreation 1,844.1 1.1 .0 98.9 color.gifcolor.gif
Public Water Supply 17.8 .0 .0 100.0 color.gif
Total Body Contact Recreation 3,275.5 38.8 .0 61.2 color.gifcolor.gif
Warm Water Fishery 6,588.1 70.2 .0 29.8 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Rivers and Streams 2008

Description of this table
PCB in Water Column Polychlorinated Biphenyls (PCBs) color.gif 34,733.7
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 14,823.8
Other Flow Regime Alterations Flow Alteration(s) color.gif 7,632.8
Mercury in Water Column Mercury color.gif 7,179.5
Other Anthropogenic Substrate Alterations Habitat Alterations color.gif 7,017.9
Mercury in Fish Tissue Mercury color.gif 6,884.8
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 3,124.0
Escherichia Coli (E. Coli) Pathogens color.gif 2,003.1
Sedimentation/Siltation Sediment color.gif 1,528.7
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 1,141.4
Phosphorus, Total Nutrients color.gif 470.5
Organic Enrichment (Sewage) Biological Indicators Organic Enrichment/Oxygen Depletion color.gif 186.7
Chlordane Pesticides color.gif 148.7
Polybrominated Biphenyls Toxic Organics color.gif 144.4
DDT Pesticides color.gif 144.4
Excess Algal Growth Algal Growth color.gif 119.5
Cause Unknown Cause Unknown color.gif 62.9
Temperature, Water Temperature color.gif 57.4
Total Suspended Solids (TSS) Turbidity color.gif 47.0
Oil and Grease Oil and Grease color.gif 36.8
Copper Metals (other than Mercury) color.gif 33.6
Ammonia, Un-ionized Ammonia color.gif 31.4
Aquatic Plants - Native Nuisance Native Species color.gif 18.8
Total Dissolved Solids (TDS) Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 18.8
Nitrogen, Total Nutrients color.gif 17.8
Petroleum Hydrocarbons Oil and Grease color.gif 13.3
Lead Metals (other than Mercury) color.gif 13.3
Solids (Suspended/Bedload) Sediment color.gif 13.3
Chromium, Total Metals (other than Mercury) color.gif 13.3
Fish Kill(s) Cause Unknown - Fish Kills color.gif 13.1
Bacterial Slimes Pathogens color.gif 11.3
Physical Substrate Habitat Alterations Habitat Alterations color.gif 7.3
Polychlorinated Biphenyls (PCBs) Polychlorinated Biphenyls (PCBs) color.gif 5.8
Ammonia, Total Ammonia color.gif 5.4
Alterations in Wetland Habitats Habitat Alterations color.gif 3.6

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Site-specific Targeted Monitoring Results

Probable Sources
Michigan Rivers and Streams 2008

Description of this table
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 35,818.0
Channelization Hydromodification color.gif 7,385.3
Non-Point Source Unspecified Nonpoint Source color.gif 5,575.8
Source Unknown Unknown color.gif 4,301.1
Agriculture Agriculture color.gif 1,415.4
Unspecified Urban Stormwater Urban-Related Runoff/Stormwater color.gif 1,259.1
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 1,077.6
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 909.7
Illicit Connections/Hook-Ups To Storm Sewers Municipal Discharges/Sewage color.gif 898.7
Municipal (Urbanized High Density Area) Urban-Related Runoff/Stormwater color.gif 695.7
Streambank Modifications/Destabilization Hydromodification color.gif 579.7
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 563.4
Post-Development Erosion And Sedimentation Hydromodification color.gif 549.0
Contaminated Sediments Legacy/Historical Pollutants color.gif 393.3
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 354.6
Industrial/Commercial Site Stormwater Discharge (Permitted) Urban-Related Runoff/Stormwater color.gif 247.9
Industrial Point Source Discharge Industrial color.gif 225.5
Habitat Modification - Other Than Hydromodification Habitat Alterations (Not Directly Related To Hydromodification) color.gif 164.2
Livestock (Grazing Or Feeding Operations) Agriculture color.gif 121.7
Sources Outside State Jurisdiction Or Borders Other color.gif 98.5
Non-Irrigated Crop Production Agriculture color.gif 97.0
Unpermitted Discharge (Domestic Wastes) Municipal Discharges/Sewage color.gif 85.7
Animal Feeding Operations (Nps) Agriculture color.gif 84.3
Waterfowl Natural/Wildlife color.gif 80.7
Wet Weather Discharges (Non-Point Source) Urban-Related Runoff/Stormwater color.gif 80.1
Subsurface (Hardrock) Mining Resource Extraction color.gif 66.7
Sewage Discharges In Unsewered Areas Municipal Discharges/Sewage color.gif 62.8
Dry Weather Flows With Nps Pollutants Urban-Related Runoff/Stormwater color.gif 61.1
Highways, Roads, Bridges, Infrastructure (New Construction) Construction color.gif 40.1
Irrigated Crop Production Agriculture color.gif 36.7
Loss Of Riparian Habitat Habitat Alterations (Not Directly Related To Hydromodification) color.gif 32.2
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 32.0
Wildlife Other Than Waterfowl Natural/Wildlife color.gif 25.2
Upstream Impoundments (E.G., Pl-566 Nrcs Structures) Hydromodification color.gif 23.4
Internal Nutrient Recycling Natural/Wildlife color.gif 20.1
Wastes From Pets Urban-Related Runoff/Stormwater color.gif 19.9
Mine Tailings Resource Extraction color.gif 18.2
Impervious Surface/Parking Lot Runoff Urban-Related Runoff/Stormwater color.gif 18.1
Dam Construction (Other Than Upstream Flood Control Projects) Hydromodification color.gif 17.7
Landfills Land Application/Waste Sites/Tanks color.gif 14.8
Petroleum/Natural Gas Activities Resource Extraction color.gif 13.3
Dam Or Impoundment Hydromodification color.gif 10.3
Crop Production With Subsurface Drainage Agriculture color.gif 9.1
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso) Municipal Discharges/Sewage color.gif 8.8
Site Clearance (Land Development Or Redevelopment) Construction color.gif 8.5
Sediment Resuspension (Clean Sediment) Hydromodification color.gif 5.2
Natural Sources Natural/Wildlife color.gif 4.4
Contaminated Groundwater Groundwater Loadings/Withdrawals color.gif 4.0
Highway/Road/Bridge Runoff (Non-Construction Related) Urban-Related Runoff/Stormwater color.gif 3.9
Golf Courses Recreation And Tourism (Non-Boating) color.gif 3.5
Permitted Runoff From Confined Animal Feeding Operations (Cafos) Agriculture color.gif 2.5
Hydrostructure Impacts On Fish Passage Hydromodification color.gif 1.6
Mill Tailings Industrial color.gif 1.1

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Site-specific Targeted Monitoring Results

Michigan Lakes, Reservoirs, and Ponds 2008

Description of this table

All
Lakes, Reservoirs, and Ponds

889,600.0 Acres of Lakes, Reservoirs, and Ponds

Assessed 824,731.7
Unassessed 64,868.3
Total Acres 889,600.0







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Description of this table

Assessed
Lakes, Reservoirs, and Ponds

824,731.7 Acres of
Assessed Lakes, Reservoirs, and Ponds

Good 527,135.2
Threatened .0
Impaired 297,596.5
Total Acres Assessed 824,731.7







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Description of this table

Threatened and Impaired
Lakes, Reservoirs, and Ponds

297,596.5 Acres of
Threatened and Impaired
Lakes, Reservoirs, and Ponds

1,614.3
567.1
.0
295,415.1
Total Threatened and Impaired 297,596.5

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Lakes, Reservoirs, and Ponds 2008

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

Description of this table
% Good
% Threatened
% Impaired
Agriculture 824,731.7 100.0 .0 .0 color.gif
Cold Water Fishery 87,114.5 100.0 .0 .0 color.gif
Fish Consumption 320,487.2 7.6 .0 92.4 color.gifcolor.gif
Industrial Water Supply 824,731.7 100.0 .0 .0 color.gif
Navigation 824,731.7 100.0 .0 .0 color.gif
Other Indigenous Aquatic Life 307,493.1 96.5 .0 3.5 color.gifcolor.gif
Partial Body Contact Recreation 1,088.7 .0 .0 100.0 color.gif
Total Body Contact Recreation 1,088.7 .0 .0 100.0 color.gif
Warm Water Fishery 1,376.1 78.6 .0 21.4 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Lakes, Reservoirs, and Ponds 2008

Description of this table
Mercury in Fish Tissue Mercury color.gif 230,660.3
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 141,652.2
Chlordane Pesticides color.gif 35,516.1
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 18,569.3
Phosphorus, Total Nutrients color.gif 7,554.3
Copper Metals (other than Mercury) color.gif 3,139.4
Excess Algal Growth Algal Growth color.gif 1,660.6
Nutrient/Eutrophication Biological Indicators Nutrients color.gif 1,177.4
Escherichia Coli (E. Coli) Pathogens color.gif 1,088.7
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems) Toxic Organics color.gif 480.4
Zinc Metals (other than Mercury) color.gif 480.4
PCB in Water Column Polychlorinated Biphenyls (PCBs) color.gif 125.0
DDT Pesticides color.gif 86.0
Mercury in Water Column Mercury color.gif 86.0
Polybrominated Biphenyls Toxic Organics color.gif 86.0

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Site-specific Targeted Monitoring Results

Probable Sources
Michigan Lakes, Reservoirs, and Ponds 2008

Description of this table
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 295,962.4
Source Unknown Unknown color.gif 16,990.6
Non-Point Source Unspecified Nonpoint Source color.gif 12,003.9
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 6,279.1
Contaminated Sediments Legacy/Historical Pollutants color.gif 6,085.8
Agriculture Agriculture color.gif 3,652.6
Mine Tailings Resource Extraction color.gif 2,659.0
Industrial Point Source Discharge Industrial color.gif 1,992.1
Unspecified Urban Stormwater Urban-Related Runoff/Stormwater color.gif 1,129.4
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 969.4
Internal Nutrient Recycling Natural/Wildlife color.gif 565.6
Sewage Discharges In Unsewered Areas Municipal Discharges/Sewage color.gif 119.3
Site Clearance (Land Development Or Redevelopment) Construction color.gif 2.0

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Site-specific Targeted Monitoring Results

Michigan Wetlands 2008

Description of this table

All
Wetlands

6,239,763.0 Acres of Wetlands

Assessed 711.3
Unassessed 6,239,051.8
Total Acres 6,239,763.0







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Description of this table

Assessed
Wetlands

711.3 Acres of
Assessed Wetlands

Good 10.3
Threatened .0
Impaired 701.0
Total Acres Assessed 711.3







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Description of this table

Threatened and Impaired
Wetlands

701.0 Acres of
Threatened and Impaired
Wetlands

.0
.0
.0
701.0
Total Threatened and Impaired 701.0

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Wetlands 2008

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

Description of this table
% Good
% Threatened
% Impaired
Agriculture 711.3 100.0 .0 .0 color.gif
Fish Consumption 701.0 .0 .0 100.0 color.gif
Industrial Water Supply 711.3 100.0 .0 .0 color.gif
Navigation 711.3 100.0 .0 .0 color.gif
Other Indigenous Aquatic Life 10.0 100.0 .0 .0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Wetlands 2008

Description of this table
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 701.0
PCB in Water Column Polychlorinated Biphenyls (PCBs) color.gif 21.0

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Site-specific Targeted Monitoring Results

Probable Sources
Michigan Wetlands 2008

Description of this table
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 701.0
Landfills Land Application/Waste Sites/Tanks color.gif 680.0

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Site-specific Targeted Monitoring Results

Michigan Great Lakes Shoreline 2008

Description of this table

All
Great Lakes Shoreline

3,250.0 Miles of Great Lakes Shoreline

Assessed 80.7
Unassessed 3,169.3
Total Miles 3,250.0







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Description of this table

Assessed
Great Lakes Shoreline

80.7 Miles of
Assessed Great Lakes Shoreline

Good 74.6
Threatened .0
Impaired 6.1
Total Miles Assessed 80.7







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Description of this table

Threatened and Impaired
Great Lakes Shoreline

6.1 Miles of
Threatened and Impaired
Great Lakes Shoreline

.6
.0
.0
5.5
Total Threatened and Impaired 6.1

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Great Lakes Shoreline 2008

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

Description of this table
% Good
% Threatened
% Impaired
Agriculture 77.7 100.0 .0 .0 color.gif
Industrial Water Supply 77.7 100.0 .0 .0 color.gif
Navigation 77.7 100.0 .0 .0 color.gif
Other Indigenous Aquatic Life 4.2 100.0 .0 .0 color.gif
Partial Body Contact Recreation 61.1 90.8 .0 9.2 color.gifcolor.gif
Total Body Contact Recreation 8.3 26.0 .0 74.0 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Great Lakes Shoreline 2008

Description of this table
Escherichia Coli (E. Coli) Pathogens color.gif 6.1

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Site-specific Targeted Monitoring Results

Probable Sources
Michigan Great Lakes Shoreline 2008

Description of this table
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 3.0
Source Unknown Unknown color.gif 2.5
Illicit Connections/Hook-Ups To Storm Sewers Municipal Discharges/Sewage color.gif .6
Waterfowl Natural/Wildlife color.gif .4
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif .2
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso) Municipal Discharges/Sewage color.gif .2

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Site-specific Targeted Monitoring Results

Michigan Great Lakes Open Water 2008

Description of this table
Pie chart not displayed because total size for Great Lakes Open Water is unavailable.
Assessed 42,167.4
Unassessed Unavailable
Total Square Miles Unavailable







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Description of this table

Assessed
Great Lakes Open Water

42,167.4 Square Miles of
Assessed Great Lakes Open Water

Good .0
Threatened .0
Impaired 42,167.4
Total Square Miles Assessed 42,167.4







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Description of this table

Threatened and Impaired
Great Lakes Open Water

42,167.4 Square Miles of
Threatened and Impaired
Great Lakes Open Water

.0
.0
.0
42,167.4
Total Threatened and Impaired 42,167.4

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Great Lakes Open Water 2008

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

Description of this table
% Good
% Threatened
% Impaired
Agriculture 42,167.4 100.0 .0 .0 color.gif
Fish Consumption 42,167.4 .0 .0 100.0 color.gif
Industrial Water Supply 42,167.4 100.0 .0 .0 color.gif
Navigation 42,167.4 100.0 .0 .0 color.gif
Other Indigenous Aquatic Life 280.0 100.0 .0 .0 color.gif
Public Water Supply 3.0 .0 .0 100.0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Great Lakes Open Water 2008

Description of this table
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 42,167.4
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 41,937.0
Mercury in Fish Tissue Mercury color.gif 31,720.4
Chlordane Pesticides color.gif 29,943.5
DDT Pesticides color.gif 4,397.0
Phosphorus, Total Nutrients color.gif 3.0
Nutrient/Eutrophication Biological Indicators Nutrients color.gif 3.0
Taste and Odor Taste, Color and Odor color.gif 3.0

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Site-specific Targeted Monitoring Results

Probable Sources
Michigan Great Lakes Open Water 2008

Description of this table
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 42,167.4
Agriculture Agriculture color.gif 4,373.0
Contaminated Sediments Legacy/Historical Pollutants color.gif 1,136.5
Non-Point Source Unspecified Nonpoint Source color.gif 3.0
Source Unknown Unknown color.gif 3.0
Industrial Point Source Discharge Industrial color.gif 3.0
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 3.0

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Site-specific Targeted Monitoring Results

Michigan Great Lakes Connecting Channel 2008

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







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Description of this table

Assessed
Great Lakes Connecting Channel

111.8 Miles of
Assessed Great Lakes Connecting Channel

Good .0
Threatened .0
Impaired 111.8
Total Miles Assessed 111.8







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Description of this table

Threatened and Impaired
Great Lakes Connecting Channel

111.8 Miles of
Threatened and Impaired
Great Lakes Connecting Channel

.0
.0
.0
111.8
Total Threatened and Impaired 111.8

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Great Lakes Connecting Channel 2008

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

Description of this table
% Good
% Threatened
% Impaired
Agriculture 111.8 100.0 .0 .0 color.gif
Fish Consumption 111.8 .0 .0 100.0 color.gif
Industrial Water Supply 111.8 100.0 .0 .0 color.gif
Navigation 111.8 100.0 .0 .0 color.gif
Other Indigenous Aquatic Life 111.8 .0 .0 100.0 color.gif
Partial Body Contact Recreation 111.8 .0 .0 100.0 color.gif
Total Body Contact Recreation 111.8 .0 .0 100.0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Great Lakes Connecting Channel 2008

No causes of impairment reported.

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Site-specific Targeted Monitoring Results

Probable Sources
Michigan Great Lakes Connecting Channel 2008

No probable sources of impairments reported.

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Site-specific Targeted Monitoring Results

Michigan Inland Lake Shoreline 2008

Description of this table
Pie chart not displayed because total size for Inland Lake Shoreline is unavailable.
Assessed 70.0
Unassessed Unavailable
Total Miles Unavailable







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Description of this table

Assessed
Inland Lake Shoreline

70.0 Miles of
Assessed Inland Lake Shoreline

Good 66.0
Threatened .0
Impaired 4.0
Total Miles Assessed 70.0







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Description of this table

Threatened and Impaired
Inland Lake Shoreline

4.0 Miles of
Threatened and Impaired
Inland Lake Shoreline

.4
.0
.0
3.6
Total Threatened and Impaired 4.0

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Michigan Inland Lake Shoreline 2008

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

Description of this table
% Good
% Threatened
% Impaired
Agriculture 70.0 100.0 .0 .0 color.gif
Industrial Water Supply 70.0 100.0 .0 .0 color.gif
Navigation 70.0 100.0 .0 .0 color.gif
Partial Body Contact Recreation 65.4 95.1 .0 4.9 color.gifcolor.gif
Total Body Contact Recreation 13.6 70.6 .0 29.4 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Michigan Inland Lake Shoreline 2008

No causes of impairment reported.

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Site-specific Targeted Monitoring Results

Probable Sources
Michigan Inland Lake Shoreline 2008

No probable sources of impairments reported.

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Michigan Causes of Impairment for Reporting Year 2008


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.
Size of Assessed Waters with Listed Causes of Impairment
Algal Growth 119.5 1,660.6
Ammonia 36.9
Cause Unknown 62.9
Cause Unknown - Fish Kills 13.1
Dioxins 3,124.0 18,569.3 41,937.0
Flow Alteration(s) 7,632.8
Habitat Alterations 7,028.8
Mercury 8,208.2 230,746.3 31,720.4
Metals (other than Mercury) 33.6 3,139.4
Nuisance Native Species 18.8
Nutrients 488.3 7,554.3 3.0
Oil and Grease 36.8
Organic Enrichment/Oxygen Depletion 1,187.8
Pathogens 2,014.4 1,088.7 6.1
Pesticides 293.0 35,602.1 29,943.5
Polychlorinated Biphenyls (PCBs) 35,218.8 141,777.2 701.0 42,167.4
Salinity/Total Dissolved Solids/Chlorides/Sulfates 18.8
Sediment 1,528.7
Taste, Color and Odor 3.0
Temperature 57.4
Toxic Organics 144.4 566.4
Turbidity 47.0

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Michigan Probable Sources Contributing to Impairments
for Reporting Year 2008

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.
Size of Assessed Waters with Probable Sources of Impairments
Agriculture 1,485.3 3,652.6 4,373.0
Atmospheric Deposition 35,818.0 295,962.4 701.0 42,167.4
Construction 45.8 2.0
Groundwater Loadings/Withdrawals 4.0
Habitat Alterations (Not Directly Related To Hydromodification) 196.4
Hydromodification 8,057.0
Industrial 226.6 1,992.1 3.0
Land Application/Waste Sites/Tanks 14.8 680.0
Legacy/Historical Pollutants 393.3 6,085.8 1,136.5
Municipal Discharges/Sewage 2,052.8 7,367.9 3.6 3.0
Natural/Wildlife 130.4 565.6 .4
Other 98.5
Recreation And Tourism (Non-Boating) 3.5
Resource Extraction 98.3 2,659.0
Unknown 4,301.1 16,990.6 2.5 3.0
Unspecified Nonpoint Source 5,575.8 12,003.9 3.0
Urban-Related Runoff/Stormwater 1,556.6 1,129.4

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Michigan TMDL Alternatives by Cause of Impairment 2008


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.
PCB(s) in Fish Tissue color.gif 46 1,217 87  
PCB in Water Column color.gif 42 1,173    
DDT color.gif 5 144 86  
Dissolved Oxygen color.gif 5 23    
Polybrominated Biphenyls color.gif 5 144 86  
Copper color.gif 4 3 3,139  
Nutrient/Eutrophication Biological Indicators color.gif 2     3
Phosphorus, Total color.gif 2     3
Taste and Odor color.gif 2     3
Escherichia Coli (E. Coli) color.gif 1 1    
Mercury in Fish Tissue color.gif 1   87  
Mercury in Water Column color.gif 1 1    
Organic Enrichment (Sewage) Biological Indicators color.gif 1 3    
Polychlorinated Biphenyls (PCBs) color.gif 1 3    
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems) color.gif 1   480  
Sedimentation/Siltation color.gif 1 18    
Temperature, Water color.gif 1 1    
Zinc color.gif 1   480  

Total: 122 TMDL Alternatives

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Michigan Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards

Description of this table
NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those previously 303(d)-listed waters now attaining all applicable water quality standards.
2004 color.gif 16 27
2006 color.gif 26 27
2008 color.gif 24 30
2011 color.gif 2 2

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Michigan Causes of Impairment for 303(d) Listed Waters

Description of this table
NOTE: Click on a cause of impairment (e.g. pathogens) to see the specific state-reported causes that are grouped to make up this category. Click on the "Number of Causes of Impairment Reported" to see a list of waters with that cause of impairment.
Polychlorinated Biphenyls (PCBs) color.gif 2,966
Mercury color.gif 1,069
Dioxins color.gif 196
Pathogens color.gif 92
Pesticides color.gif 71
Organic Enrichment/Oxygen Depletion color.gif 50
Nutrients color.gif 19
Sediment color.gif 18
Algal Growth color.gif 12
Flow Alteration(s) color.gif 9
Metals (other than Mercury) color.gif 7
Habitat Alterations color.gif 5
Oil and Grease color.gif 4
Temperature color.gif 4
Cause Unknown - Fish Kills color.gif 3
Cause Unknown color.gif 2
Ammonia color.gif 2
Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 1
Nuisance Native Species color.gif 1
Turbidity color.gif 1

Total: 4,532 Causes of Impairment

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Michigan Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

Description of this table
NOTE: Click on the underlined "Pollutant" value to see associated listed waters for which a TMDL was developed. Click on the underlined "Number of TMDLs" value to see a listing of those TMDLs for the pollutant.
Number of Causes of
Impairment Addressed
Escherichia Coli (E. Coli) color.gif 123 124
Polychlorinated Biphenyls (PCBs) color.gif 51 51
Total Suspended Solids (TSS) color.gif 17 21
Sediment color.gif 14 20
Phosphorus color.gif 10 13
Phosphorus, Total color.gif 10 23
Pathogens color.gif 9 9
Mercury color.gif 1 1
Nitrogen color.gif 1 1
Organic Enrichment/Low Dissolved Oxygen color.gif 1 1
Untreated Sewage Discharges color.gif 1 1

Total: 238 TMDLs; 265 Causes of Impairment Addressed


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Michigan Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.


Description of this table
NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
2000 color.gif 6 7
2001 color.gif 4 6
2002 color.gif 9 9
2003 color.gif 12 14
2004 color.gif 8 9
2005 color.gif 19 20
2006 color.gif 10 10
2007 color.gif 16 22
2008 color.gif 58 61
2009 color.gif 18 29
2010 color.gif 19 19
2011 color.gif 14 14
2012 color.gif 24 24
2013 color.gif 21 21

Total: 238 TMDLs; 265 Causes of Impairment Addressed

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TMDL Document Search


Full Text Search of TMDL Documents

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