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Assessment Data for the State of Michigan Year 2004

National Assessment Database
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Assessing Water Quality (Questions and Answers)

The 2004 National Assessment
Database
(Fact Sheet)

Previous National Water Quality Reports



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No State 305(b) Water Quality Assessment Report is available.
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Total Assessed Waters for the State of Michigan

Description of this table

Size Of Water
Rivers, Streams, Creeks (Miles) Lakes, Ponds, Reservoir (Acres) Bays, Estuaries (Square Miles) Coastal Shorelines (Miles) Oceans, Near Coastal Waters (Square Miles) Wetlands (Acres) Great Lakes Shoreline (Miles) Great Lakes Open Water (Square Miles) Inland Lake Shoreline (Miles)
Total Assessed Waters 22,615.29 292,981.00 .00 .00 .00 699.50 31.03 49,654.00 4.69
Estimated Total Water Size in MI 49,136.00 889,600.00 Unavailable Unavailable Unavailable 6,239,763.00 3,250.00 Unavailable Unavailable
Percent of Waters Assessed 46.03 32.93 Unavailable Unavailable Unavailable .01 .95 Unavailable Unavailable

Assessed Waters of Michigan by Watershed (8 Digit USGS Cataloging Unit)

Description of this table
Watershed Size of Water
Rivers, Streams, Creeks (Miles) Lakes, Ponds, Reservoir (Acres) Bays, Estuaries (Square Miles) Coastal Shorelines (Miles) Oceans, Near Coastal Waters (Square Miles) Wetlands (Acres) Great Lakes Shoreline (Miles) Great Lakes Open Water (Square Miles) Inland Lake Shoreline (Miles)
AU GRES-RIFLE 440.00 493.00 .00 .00 .00 .00 .00 .00 .00
AU SABLE 471.10 2,273.00 .00 .00 .00 .00 .00 .00 .00
BAD-MONTREAL 105.00 .00 .00 .00 .00 .00 .00 .00 .00
BETSIE-PLATTE 172.50 19,504.00 .00 .00 .00 .00 .00 .00 .00
BETSY-CHOCOLAY 492.70 2,361.00 .00 .00 .00 .00 .00 .00 .00
BIRCH-WILLOW 245.10 .00 .00 .00 .00 .00 10.26 .00 .00
BLACK 165.00 .00 .00 .00 .00 .00 .00 .00 .00
BLACK-MACATAWA 288.50 1,930.00 .00 .00 .00 .00 2.60 .00 .00
BLACK-PRESQUE ISLE 763.90 834.00 .00 .00 .00 .00 .00 .00 .00
BOARDMAN-CHARLEVOIX 480.95 54,133.00 .00 .00 .00 .00 2.20 .00 .00
BREVOORT-MILLECOQUINS 199.30 3,855.00 .00 .00 .00 .00 .00 .00 .00
BRULE 472.50 3,766.00 .00 .00 .00 .00 .00 .00 .00
CARP-PINE 90.00 1,385.00 .00 .00 .00 .00 .00 .00 .00
CASS 334.52 120.00 .00 .00 .00 .00 .00 .00 .00
CEDAR-FORD 499.20 71.00 .00 .00 .00 .00 .00 .00 .00
CHEBOYGAN 185.00 37,960.00 .00 .00 .00 .00 .00 .00 .00
CLINTON 180.00 4,291.00 .00 .00 .00 .00 .00 .00 .00
DEAD-KELSEY 486.30 1,945.00 .00 .00 .00 .00 .00 .00 .00
DETROIT 316.00 760.00 .00 .00 .00 .00 .00 .00 .00
ESCANABA 534.00 2,305.00 .00 .00 .00 10.00 .00 .00 .00
FISHDAM-STURGEON 183.00 455.00 .00 .00 .00 .00 .00 .00 .00
FLINT 757.30 1,992.00 .00 .00 .00 .00 .00 .00 .31
HURON 246.82 10,103.00 .00 .00 .00 .00 .00 .00 .00
KALAMAZOO 871.00 7,103.00 .00 .00 .00 .00 .00 .00 .25
KAWKAWLIN-PINE 19.50 .00 .00 .00 .00 680.00 1.35 .00 .00
KEWEENAW PENINSULA 567.10 14,412.00 .00 .00 .00 .00 .00 .00 .00
LAKE ERIE .00 .00 .00 .00 .00 .00 .00 115.00 .00
LAKE HURON .00 .00 .00 .00 .00 .00 .00 10,243.00 .00
LAKE MICHIGAN .00 .00 .00 .00 .00 .00 .00 22,580.00 .00
LAKE ST. CLAIR 13.30 .00 .00 .00 .00 .00 3.12 170.00 .00
LAKE SUPERIOR .00 3,965.00 .00 .00 .00 .00 .00 16,400.00 .00
LITTLE CALUMET-GALIEN 78.00 .00 .00 .00 .00 .00 4.50 .00 .00
LONE LAKE-OCQUEOC 72.00 278.00 .00 .00 .00 .00 .20 .00 .00
LOWER GRAND 892.10 2,272.00 .00 .00 .00 .00 3.00 .00 .10
MANISTEE 763.00 3,006.00 .00 .00 .00 .00 .00 .00 .00
MANISTIQUE 477.00 5,774.00 .00 .00 .00 .00 .00 .00 2.00
MAPLE 431.00 724.00 .00 .00 .00 .00 .00 .00 .00
MENOMINEE 585.30 1,145.00 .00 .00 .00 .00 .00 .00 .00
MICHIGAMME 471.50 13,709.00 .00 .00 .00 .00 .00 .00 .00
MUSKEGON 1,082.00 37,088.00 .00 .00 .00 9.50 .00 .00 .00
ONTONAGON 830.70 18,476.00 .00 .00 .00 .00 .00 .00 .00
OTTAWA-STONY 83.05 .00 .00 .00 .00 .00 1.00 .00 .00
PERE MARQUETTE-WHITE 934.40 8,712.00 .00 .00 .00 .00 .00 .00 .00
PIGEON-WISCOGGIN 141.00 .00 .00 .00 .00 .00 .00 .00 .00
PINE 369.41 627.00 .00 .00 .00 .00 .00 .00 .00
RAISIN 321.00 1,360.00 .00 .00 .00 .00 .00 .00 .00
SAGINAW 172.00 .00 .00 .00 .00 .00 .00 .00 .00
SHIAWASSEE 359.00 1,487.00 .00 .00 .00 .00 .00 .00 .00
ST. CLAIR 428.50 14.00 .00 .00 .00 .00 .50 .00 2.00
ST. JOSEPH 1,133.40 5,387.00 .00 .00 .00 .00 2.00 .00 .00
ST. JOSEPH 195.70 .00 .00 .00 .00 .00 .00 .00 .00
ST. MARYS 226.04 .00 .00 .00 .00 .00 .00 16.00 .00
STURGEON 661.00 3,323.00 .00 .00 .00 .00 .00 .00 .00
TACOOSH-WHITEFISH 302.00 .00 .00 .00 .00 .00 .00 45.00 .00
TAHQUAMENON 268.00 160.00 .00 .00 .00 .00 .00 .00 .00
THORNAPPLE 269.60 430.00 .00 .00 .00 .00 .00 .00 .00
THUNDER BAY 477.00 9,907.00 .00 .00 .00 .00 .00 85.00 .00
TIFFIN 118.00 .00 .00 .00 .00 .00 .00 .00 .00
TITTABAWASSEE 179.70 1,370.00 .00 .00 .00 .00 .00 .00 .00
UPPER GRAND 572.50 1,716.00 .00 .00 .00 .00 .00 .00 .00
WAISKA 141.80 .00 .00 .00 .00 .00 .30 .00 .03


Michigan Assessed Waters
Individual Use Support for Rivers and Streams

Description of this table
State Designated Use Total Miles Assessed Percent Good Percent Threatened Percent Impaired color.gif% Good
color.gif% Threatened
color.gif% Impaired
OVERALL WATER QUALITY STANDARDS 22,615.29 74.21 .00 25.79 color.gifcolor.gif
The state assessed 22,615.29 miles of rivers and streams, or 46.03% of 49,136.00 total miles.

Michigan Assessed Waters
Water Quality Attainment for Rivers and Streams

Description of this table
Attainment Status Miles Percent of Assessed
Good 16,783.38 74.21
Threatened .00 .00
Impaired 5,831.91 25.79
Total Miles Assessed 22,615.29 100.00

Michigan Top Causes of Impairments
for Rivers and Streams

Description of this table
# State Cause Name Total
Miles
Impaired
1 HIGHLY MODIFIED 2,999.75
2 PCB IN FISH TISSUE 1,425.00
3 POLYCHLORINATED BIPHENYLS 691.50
4 MACROINVERTEBRATE COMMUNITY RATED POOR 669.40
5 PATHOGENS 560.56
6 FISH COMMUNITY RATED POOR 538.60
7 MERCURY IN FISH TISSUE 509.00
8 MERCURY 377.50
9 DISSOLVED OXYGEN SATURATION 318.20
10 BIOLOGICAL DEGRADATION 286.50

Michigan Top Probable Sources of Impairments
for Rivers and Streams

No Probable Sources Reported.


Michigan Assessed Waters
Individual Use Support for Lakes, Ponds and Reservoirs

Description of this table
State Designated Use Total Acres Assessed Percent Good Percent Threatened Percent Impaired color.gif% Good
color.gif% Threatened
color.gif% Impaired
OVERALL WATER QUALITY STANDARDS 292,981.00 7.13 .00 92.87 color.gifcolor.gif
The state assessed 292,981.00 acres of lakes, ponds and reservoirs, or 32.93% of 889,600.00 total acres.

Michigan Assessed Waters
Water Quality Attainment for Lakes, Ponds and Reservoirs

Description of this table
Attainment Status Acres Percent of Assessed
Good 20,902.00 7.13
Threatened .00 .00
Impaired 272,079.00 92.87
Total Acres Assessed 292,981.00 100.00

Michigan Top Causes of Impairments
for Lakes, Ponds and Reservoirs

Description of this table
# State Cause Name Total
Acres
Impaired
1 MERCURY IN FISH TISSUE 199,705.00
2 PCB IN FISH TISSUE 133,785.00
3 FCA-CHLORDANE 38,057.00
4 FCA-TCDD (DIOXINS) 18,770.00
5 PHOSPHORUS (TOTAL) 6,195.00
6 EXCESS ALGAL GROWTH 4,397.00
7 COPPER 2,659.00
8 PATHOGENS 1,090.00
9 NUISANCE PLANT GROWTHS 798.00
10 BENZENE 500.00

Michigan Top Probable Sources of Impairments
for Lakes, Ponds and Reservoirs

No Probable Sources Reported.


Michigan Assessed Waters
Individual Use Support for Wetlands

Description of this table
State Designated Use Total Acres Assessed Percent Good Percent Threatened Percent Impaired color.gif% Good
color.gif% Threatened
color.gif% Impaired
OVERALL WATER QUALITY STANDARDS 699.50 1.43 .00 98.57 color.gifcolor.gif
The state assessed 699.50 acres of wetlands, or .01% of 6,239,763.00 total acres.

Michigan Assessed Waters
Water Quality Attainment for Wetlands

Description of this table
Attainment Status Acres Percent of Assessed
Good 10.00 1.43
Threatened .00 .00
Impaired 689.50 98.57
Total Acres Assessed 699.50 100.00

Michigan Top Causes of Impairments
for Wetlands

Description of this table
# State Cause Name Total
Acres
Impaired
1 PCB IN FISH TISSUE 689.50

Michigan Top Probable Sources of Impairments
for Wetlands

No Probable Sources Reported.


Michigan Assessed Waters
Individual Use Support for Great Lakes Shoreline

Description of this table
State Designated Use Total Miles Assessed Percent Good Percent Threatened Percent Impaired color.gif% Good
color.gif% Threatened
color.gif% Impaired
OVERALL WATER QUALITY STANDARDS 31.03 52.53 .00 47.47 color.gifcolor.gif
The state assessed 31.03 miles of great lakes shoreline, or .95% of 3,250.00 total miles.

Michigan Assessed Waters
Water Quality Attainment for Great Lakes Shoreline

Description of this table
Attainment Status Miles Percent of Assessed
Good 16.30 52.53
Threatened .00 .00
Impaired 14.73 47.47
Total Miles Assessed 31.03 100.00

Michigan Top Causes of Impairments
for Great Lakes Shoreline

Description of this table
# State Cause Name Total
Miles
Impaired
1 PATHOGENS 14.73

Michigan Top Probable Sources of Impairments
for Great Lakes Shoreline

No Probable Sources Reported.


Michigan Assessed Waters
Individual Use Support for Great Lakes Open Water

Description of this table
State Designated Use Total Square Miles Assessed Percent Good Percent Threatened Percent Impaired color.gif% Good
color.gif% Threatened
color.gif% Impaired
OVERALL WATER QUALITY STANDARDS 49,654.00 .00 .00 100.00 color.gif
The total size of this water type for the state is not currently available.

Michigan Assessed Waters
Water Quality Attainment for Great Lakes Open Water

Description of this table
Attainment Status Square Miles Percent of Assessed
Good .00 .00
Threatened .00 .00
Impaired 49,654.00 100.00
Total Square Miles Assessed 49,654.00 100.00

Michigan Top Causes of Impairments
for Great Lakes Open Water

Description of this table
# State Cause Name Total
Square Miles
Impaired
1 PCB IN FISH TISSUE 49,654.00
2 FCA-TCDD (DIOXINS) 49,423.00
3 FCA-CHLORDANE 46,520.00
4 MERCURY IN FISH TISSUE 40,354.00
5 FCA-DDT 13,825.00

Michigan Top Probable Sources of Impairments
for Great Lakes Open Water

No Probable Sources Reported.


Michigan Assessed Waters
Individual Use Support for Inland Lake Shoreline

Description of this table
State Designated Use Total Miles Assessed Percent Good Percent Threatened Percent Impaired color.gif% Good
color.gif% Threatened
color.gif% Impaired
OVERALL WATER QUALITY STANDARDS 4.69 42.64 .00 57.36 color.gifcolor.gif
The total size of this water type for the state is not currently available.

Michigan Assessed Waters
Water Quality Attainment for Inland Lake Shoreline

Description of this table
Attainment Status Miles Percent of Assessed
Good 2.00 42.64
Threatened .00 .00
Impaired 2.69 57.36
Total Miles Assessed 4.69 100.00

Michigan Top Causes of Impairments
for Inland Lake Shoreline

Description of this table
# State Cause Name Total
Miles
Impaired
1 PCB IN FISH TISSUE 2.00
2 POLYCHLORINATED BIPHENYLS 2.00
3 PATHOGENS .69

Michigan Top Probable Sources of Impairments
for Inland Lake Shoreline

No Probable Sources Reported.


Michigan

Causes of Impairment

Description of this table
State Cause Name Size of Assessed Waters with Listed Causes of Impairment
Rivers, Streams, Creeks (Miles) Lakes, Ponds, Reservoir (Acres) Bays, Estuaries (Square Miles) Coastal Shorelines (Miles) Oceans, Near Coastal Waters (Square Miles) Wetlands (Acres) Great Lakes Shoreline (Miles) Great Lakes Open Waters (Square Miles) Inland Lake Shoreline (Miles)
ALDRIN 1.00 .00 .00 .00 .00 .00 .00 .00 .00
ATRAZINE 1.00 .00 .00 .00 .00 .00 .00 .00 .00
BACTERIA, ESCHERICHIA COLI 8.00 .00 .00 .00 .00 .00 .00 .00 .00
BACTERIAL SLIMES 5.00 .00 .00 .00 .00 .00 .00 .00 .00
BEAVER DAM 6.00 .00 .00 .00 .00 .00 .00 .00 .00
BENZENE .00 500.00 .00 .00 .00 .00 .00 .00 .00
BIOLOGICAL COMMUNITY THREATENED 3.00 .00 .00 .00 .00 .00 .00 .00 .00
BIOLOGICAL DEGRADATION 286.50 .00 .00 .00 .00 .00 .00 .00 .00
CHEMICALS 1.00 .00 .00 .00 .00 .00 .00 .00 .00
CHLORIDES 4.00 .00 .00 .00 .00 .00 .00 .00 .00
CHROMIUM, HEXAVALENT 3.00 .00 .00 .00 .00 .00 .00 .00 .00
COPPER 16.00 2,659.00 .00 .00 .00 .00 .00 .00 .00
DDT 25.00 .00 .00 .00 .00 .00 .00 .00 .00
DISSOLVED OXYGEN SATURATION 318.20 .00 .00 .00 .00 .00 .00 .00 .00
ETHYLBENZENE .00 500.00 .00 .00 .00 .00 .00 .00 .00
EXCESS ALGAL GROWTH 117.10 4,397.00 .00 .00 .00 .00 .00 .00 .00
FCA-CHLORDANE 26.00 38,057.00 .00 .00 .00 .00 .00 46,520.00 .00
FCA-DDT 36.00 .00 .00 .00 .00 .00 .00 13,825.00 .00
FCA-PBBS 36.00 .00 .00 .00 .00 .00 .00 .00 .00
FCA-TCDD (DIOXINS) 79.00 18,770.00 .00 .00 .00 .00 .00 49,423.00 .00
FISH COMMUNITY RATED POOR 538.60 .00 .00 .00 .00 .00 .00 .00 .00
FISH KILLS 64.90 .00 .00 .00 .00 .00 .00 .00 .00
HIGHLY MODIFIED 2,999.75 .00 .00 .00 .00 .00 .00 .00 .00
LINDANE 1.00 .00 .00 .00 .00 .00 .00 .00 .00
MACROINVERTEBRATE COMMUNITY RATED POOR 669.40 .00 .00 .00 .00 .00 .00 .00 .00
MERCURY 377.50 .00 .00 .00 .00 .00 .00 .00 .00
MERCURY IN FISH TISSUE 509.00 199,705.00 .00 .00 .00 .00 .00 40,354.00 .00
METALS 1.00 500.00 .00 .00 .00 .00 .00 .00 .00
NITRATES 1.00 .00 .00 .00 .00 .00 .00 .00 .00
NITROGEN (TOTAL) 3.00 .00 .00 .00 .00 .00 .00 .00 .00
NUISANCE PLANT GROWTHS 139.20 798.00 .00 .00 .00 .00 .00 .00 .00
NUTRIENT/EUTROPHICATION BIOLOGICAL INDICATORS 36.00 .00 .00 .00 .00 .00 .00 .00 .00
OIL AND GREASE 6.60 .00 .00 .00 .00 .00 .00 .00 .00
ORGANIC ENRICHMENT 4.50 .00 .00 .00 .00 .00 .00 .00 .00
ORGANICS 1.00 .00 .00 .00 .00 .00 .00 .00 .00
PATHOGENS 560.56 1,090.00 .00 .00 .00 .00 14.73 .00 .69
PCB IN FISH TISSUE 1,425.00 133,785.00 .00 .00 .00 689.50 .00 49,654.00 2.00
PHOSPHORUS (TOTAL) 224.60 6,195.00 .00 .00 .00 .00 .00 .00 .00
POLYCHLORINATED BIPHENYLS 691.50 .00 .00 .00 .00 .00 .00 .00 2.00
POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) (AQUATIC ECOSYSTEMS) .00 500.00 .00 .00 .00 .00 .00 .00 .00
SEDIMENTATION/SILTATION 4.00 .00 .00 .00 .00 .00 .00 .00 .00
TASTE AND ODOR 2.50 .00 .00 .00 .00 .00 .00 .00 .00
TOLUENE .00 500.00 .00 .00 .00 .00 .00 .00 .00
TOTAL DISSOLVED SOLIDS 41.00 .00 .00 .00 .00 .00 .00 .00 .00
TURBIDITY 4.00 .00 .00 .00 .00 .00 .00 .00 .00
UNTREATED SEWAGE DISCHARGE 196.00 160.00 .00 .00 .00 .00 .00 .00 .00
XYLENES (TOTAL) (MIXED) .00 500.00 .00 .00 .00 .00 .00 .00 .00

Michigan

Probable Sources Contributing to Impairment

No Source Data Reported by the State.


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