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Indiana Assessment Summary for Reporting Year 2006

Description of this table

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Great Lakes Shoreline (Miles)	Great Lakes Open Water (Square Miles)
Good Waters	8,166	2,496
Previously impaired waters       now attaining all uses	59
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	11,089	66,976	59	241
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed	11,089	66,976	59	241
New TMDLs completed	982	0	0	0
Remaining TMDLs needed	10,107	66,976	59	241
Total Assessed Waters	19,255	69,472	59	241
Total Waters	35,673	142,871	59	Unavailable
Percent of Waters Assessed	54.0	48.6	100.0	Unavailable

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2006

Indiana Assessed Waters
Summary of Water Quality Attainment for Rivers and Streams
Reporting Year 2006

Description of this table Assessed Status Miles Assessed 19,255 Unassessed 16,418 Total Miles 35,673

Description of this table Attainment Status Miles Good 8,166 Threatened 0 Impaired 11,089 Total Miles Assessed 19,255

Description of this table TMDL Development Status Miles All TMDLs completed 982 TMDL alternative 0 Non-pollutant impairment 0 TMDL needed 10,107 Total Threatened and Impaired 11,089

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Indiana Assessed Waters
Designated Use Support for Rivers and Streams
Reporting Year 2006*

* 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
Full Body Contact	11,299	32.2	.0	67.8
Human Health And Wildlife	3,990	.0	.0	100.0
Public Water Supply	1	.0	.0	100.0
Warm Water Aquatic Life	16,676	81.8	.0	18.2

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Indiana Causes of Impairment
for Threatened and Impaired Rivers and Streams
Reporting Year 2006

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Escherichia Coli (E. Coli)	Pathogens	7,595
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	3,413
Mercury	Mercury	3,020
Cause Unknown	Cause Unknown	1,980
Nutrient/Eutrophication Biological Indicators	Nutrients	625
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	452
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	341
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	248
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	154
Chlorophyll-A	Algal Growth	118
Sedimentation/Siltation	Sediment	116
Lead	Metals (other than Mercury)	95
Physical Substrate Habitat Alterations	Habitat Alterations	92
Cyanide	Toxic Inorganics	69
pH	pH/Acidity/Caustic Conditions	66
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	61
Low Flow Alterations	Flow Alteration(s)	57
Hexachlorocyclohexane (Mixture)	Pesticides	54
Organic Enrichment (Sewage) Biological Indicators	Organic Enrichment/Oxygen Depletion	41
Ammonia, Un-ionized	Ammonia	37
Zinc	Metals (other than Mercury)	31
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems)	Toxic Organics	22
Cadmium	Metals (other than Mercury)	17
Copper	Metals (other than Mercury)	13
Nickel	Metals (other than Mercury)	13
Oil and Grease	Oil and Grease	11
Temperature, Water	Temperature	10
Atrazine	Pesticides	7

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Indiana Probable Sources of Impairments
for Threatened and Impaired Rivers and Streams
Reporting Year 2006

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Non-Point Source	Unspecified Nonpoint Source	6,353
Source Unknown	Unknown	4,040
Crop Production With Subsurface Drainage	Agriculture	1,492
Livestock (Grazing Or Feeding Operations)	Agriculture	1,464
Permitted Runoff From Confined Animal Feeding Operations (Cafos)	Agriculture	1,203
Package Plant Or Other Permitted Small Flows Discharges	Municipal Dishcarges/Sewage	899
On-Site Treatment Systems (Septic Systems And Similar Decencentralized Systems)	Municipal Dishcarges/Sewage	777
Loss Of Riparian Habitat	Habitat Alterations (Not Directly Related To Hydromodification)	576
Impervious Surface/Parking Lot Runoff	Urban-Related Runoff/Stormwater	453
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	402
Combined Sewer Overflows	Municipal Dishcarges/Sewage	397
Industrial Point Source Discharge	Industrial	350
Streambank Modifications/Destablization	Hydromodification	331
Agriculture	Agriculture	316
Channelization	Hydromodification	177
Illicit Connections/Hook-Ups To Storm Sewers	Municipal Dishcarges/Sewage	173
Contaminated Sediments	Legacy/Historical Pollutants	173
Acid Mine Drainage	Resource Extraction	149
Natural Sources	Natural/Wildlife	111
Reclamation Of Inactive Mining	Resource Extraction	100
Dredge Mining	Resource Extraction	57
Illegal Dumps Or Other Inappropriate Waste Disposal	Spills/Dumping	54
Managed Pasture Grazing	Agriculture	28
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	24
Historic Bottom Deposits (Not Sediment)	Legacy/Historical Pollutants	18
Dam Construction (Other Than Upstream Flood Control Projects)	Hydromodification	16
Post-Development Erosion And Sedimentation	Hydromodification	13
Contaminated Groundwater	Groundwater Loadings/Withdrawals	9
Landfills	Land Application/Waste Sites/Tanks	7
Sanitary Sewer Overflows (Collection System Failures)	Municipal Dishcarges/Sewage	4
Rcra Hazardous Waste Sites	Industrial	3
Discharges From Biosolids (Sludge) Storage, Application Or Disposal	Land Application/Waste Sites/Tanks	3
Site Clearance (Land Development Or Redevelopment)	Construction	2
Highways, Roads, Bridges, Infrasturcture (New Construction)	Construction	2
Upstream Impoundments (E.G., Pl-566 Nrcs Structures)	Hydromodification	1

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Indiana Assessed Waters
Summary of Water Quality Attainment for Lakes, Reservoirs, and Ponds
Reporting Year 2006

Description of this table Assessed Status Acres Assessed 69,472 Unassessed 73,399 Total Acres 142,871

Description of this table Attainment Status Acres Good 2,496 Threatened 0 Impaired 66,976 Total Acres Assessed 69,472

Description of this table TMDL Development Status Acres All TMDLs completed 0 TMDL alternative 0 Non-pollutant impairment 0 TMDL needed 66,976 Total Threatened and Impaired 66,976

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Indiana Assessed Waters
Designated Use Support for Lakes, Reservoirs, and Ponds
Reporting Year 2006*

* 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
Full Body Contact	23,888	95.9	.0	4.1
Human Health And Wildlife	48,474	.0	.0	100.0
Public Water Supply	16,615	1.4	.0	98.6
Warm Water Aquatic Life	10,315	35.8	.0	64.2

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Indiana Causes of Impairment
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2006

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Mercury	Mercury	39,773
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	18,299
Taste and Odor	Taste, Color and Odor	16,385
Chlorophyll-A	Algal Growth	16,385
Cause Unknown	Cause Unknown	6,520
Temperature, Water	Temperature	1,556
Escherichia Coli (E. Coli)	Pathogens	983
pH	pH/Acidity/Caustic Conditions	105

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Indiana Probable Sources of Impairments
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2006

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Source Unknown	Unknown	65,254
Industrial Point Source Discharge	Industrial	1,556
Non-Point Source	Unspecified Nonpoint Source	953
Acid Mine Drainage	Resource Extraction	105
Impervious Surface/Parking Lot Runoff	Urban-Related Runoff/Stormwater	30
Agriculture	Agriculture	30
Combined Sewer Overflows	Municipal Dishcarges/Sewage	30

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Indiana Assessed Waters
Summary of Water Quality Attainment for Great Lakes Shoreline
Reporting Year 2006

Description of this table Assessed Status Miles Assessed 59 Unassessed 0 Total Miles 59

Description of this table Attainment Status Miles Good 0 Threatened 0 Impaired 59 Total Miles Assessed 59

Description of this table TMDL Development Status Miles All TMDLs completed 0 TMDL alternative 0 Non-pollutant impairment 0 TMDL needed 59 Total Threatened and Impaired 59

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Indiana Assessed Waters
Designated Use Support for Great Lakes Shoreline
Reporting Year 2006*

* 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
Full Body Contact	59	2.3	.0	97.7
Human Health And Wildlife	59	.0	.0	100.0
Public Water Supply	33	100.0	.0	.0
Warm Water Aquatic Life	59	97.7	.0	2.3

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Indiana Causes of Impairment
for Threatened and Impaired Great Lakes Shoreline
Reporting Year 2006

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	59
Mercury	Mercury	59
Escherichia Coli (E. Coli)	Pathogens	58
Cyanide	Toxic Inorganics	1

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Indiana Probable Sources of Impairments
for Threatened and Impaired Great Lakes Shoreline
Reporting Year 2006

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Source Unknown	Unknown	59
On-Site Treatment Systems (Septic Systems And Similar Decencentralized Systems)	Municipal Dishcarges/Sewage	18
Illicit Connections/Hook-Ups To Storm Sewers	Municipal Dishcarges/Sewage	18
Non-Point Source	Unspecified Nonpoint Source	6

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Indiana Assessed Waters
Summary of Water Quality Attainment for Great Lakes Open Water
Reporting Year 2006

Description of this table Pie chart not displayed because total size for Great Lakes Open Water is unavailable. Assessed Status Square Miles Assessed 0 Unassessed Unavailable Total Square Miles Unavailable

Description of this table Attainment Status Square Miles Good 0 Threatened 0 Impaired 241 Total Square Miles Assessed 0

Description of this table TMDL Development Status Square Miles All TMDLs completed 0 TMDL alternative 0 Non-pollutant impairment 0 TMDL needed 241 Total Threatened and Impaired 241

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Indiana Assessed Waters
Designated Use Support for Great Lakes Open Water
Reporting Year 2006*

* 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
Human Health And Wildlife	241	.0	.0	100.0

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Indiana Causes of Impairment
for Threatened and Impaired Great Lakes Open Water
Reporting Year 2006

No causes of impairment reported.

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Indiana Probable Sources of Impairments
for Threatened and Impaired Great Lakes Open Water
Reporting Year 2006

No probable sources of impairments reported.

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Indiana Causes of Impairment for Reporting Year 2006

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.
Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Great Lakes Shoreline (Miles)	Great Lakes Open Water (Square Miles)
Algal Growth	118	16,385
Ammonia	37
Cause Unknown	1,980	6,520
Dioxins	154
Flow Alteration(s)	57
Habitat Alterations	92
Mercury	3,020	39,773	59
Metals (other than Mercury)	126
Nutrients	625
Oil and Grease	11
Organic Enrichment/Oxygen Depletion	469
Pathogens	7,595	983	58
Pesticides	54
pH/Acidity/Caustic Conditions	66	105
Polychlorinated Biphenyls (PCBs)	3,413	18,299	59
Salinity/Total Dissolved Solids/Chlorides/Sulfates	429
Sediment	116
Taste, Color and Odor		16,385
Temperature	10	1,556
Toxic Inorganics	69		1
Toxic Organics	22

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Indiana Probable Sources Contributing to Impairments
for Reporting Year 2006

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)	Great Lakes Shoreline (Miles)	Great Lakes Open Water (Square Miles)
Agriculture	2,493	30
Construction	2
Groundwater Loadings/Withdrawals	9
Habitat Alterations (Not Directly Related To Hydromodification)	576
Hydromodification	628
Industrial	353	1,556
Land Application/Waste Sites/Tanks	10
Legacy/Historical Pollutants	191
Municipal Dishcarges/Sewage	1,912	30	18
Natural/Wildlife	111
Resource Extraction	329	105
Spills/Dumping	54
Unknown	4,040	65,254	59
Unspecified Nonpoint Source	6,353	953	6
Urban-Related Runoff/Stormwater	453	30

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Indiana TMDL Alternatives by Cause of Impairment 2006

No TMDL Alternatives reported.

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Indiana Previously Impaired Waters Now Attaining All Uses

Description of this table

NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those waters now attaining all uses.
Cycle Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
2004	57	74

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Indiana 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.
Cause of Impairment Group Name	Number of Causes of Impairment Reported
Pathogens	939
Polychlorinated Biphenyls (PCBs)	595
Mercury	524
Cause Unknown - Impaired Biota	333
Nutrients	94
Salinity/Total Dissolved Solids/Chlorides/Sulfates	76
Organic Enrichment/Oxygen Depletion	46
Algal Growth	17
Toxic Inorganics	15
Taste, Color and Odor	12
Metals (other than Mercury)	9
Ammonia	5
Dioxins	4
Oil and Grease	3
Sediment	3
Pesticides	1

Total: 2,676 Causes of Impairment

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Indiana 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.
Pollutant	Number of TMDLs	Number of Causes of Impairment Addressed
Escherichia Coli (E. Coli)	450	450
Phosphorus	58	67
Phosphorus, Total	45	45
Total Suspended Solids (TSS)	45	45
Nitrite/Nitrate	22	22
Pathogens	22	22
Nitrogen, Total	20	20
Ammonia	1	1
Carbonaceous Bod	1	1
Dissolved Oxygen	1	2

Total: 665 TMDLs; 675 Causes of Impairment Addressed

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Indiana 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.
Fiscal Year	Number of TMDLs	Number of Causes of Impairment Addressed
2000	1	2
2001	2	2
2004	38	38
2005	165	165
2006	247	256
2007	95	95
2008	117	117

Total: 665 TMDLs; 675 Causes of Impairment Addressed

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