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Site-specific Targeted Monitoring Summary Results

Maine (2010)

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Wetlands (Acres)
Good Waters	29,732.3	906,588.0		260.0
Previously impaired waters       now attaining all uses	70.3	6,926.0
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	1,165.2	85,497.0	156.4	33.0
TMDL completed	91.4	27,750.0	153.7
TMDL alternative	324.8			10.0
Non-pollutant impairment	30.2	48,964.0
TMDL needed	718.8	8,783.0	2.7	23.0
New TMDLs completed	52.5	.0	.0	10.0
Remaining TMDLs needed	666.3	8,783.0	2.7	13.0
Total Assessed Waters	30,897.4	992,085.0	156.4	293.0
Total Waters	45,177.0	992,085.0	2,846.0	Unavailable
Percent of Waters Assessed	68.4	100.0	5.5	Unavailable

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

Site-specific Targeted Monitoring Results

Maine Rivers and Streams 2010

Description of this table Assessed Status Miles Assessed 30,897.4 Unassessed 14,279.6 Total Miles 45,177.0

Description of this table Attainment Status Miles Good 29,732.3 Threatened .0 Impaired 1,165.2 Total Miles Assessed 30,897.4

Description of this table TMDL Development Status Miles All TMDLs completed 144.0 TMDL alternative 324.8 Non-pollutant impairment 30.2 TMDL needed 666.3 Total Threatened and Impaired 1,165.2

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Maine Rivers and Streams 2010

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

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Drinking Water Supply After Disinfection	4,400.1	100.0	.0	.0
Drinking Water Supply After Treatment	1,040.9	99.7	.0	.3
Fish And Other Aquatic Life	30,590.5	97.8	.0	2.2
Fish Consumption	5,513.9	88.5	.0	11.5
Fishing	5,435.2	99.8	.0	.2
Hydroelectric Power Generation	1,650.9	100.0	.0	.0
Industrial Process And Cooling Water Supply	1,650.9	100.0	.0	.0
Navigation	5,428.6	99.9	.0	.1
Primary Contact Recreation	5,417.3	96.7	.0	3.3
Secondary Contact Recreation	5,415.0	97.0	.0	3.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Maine Rivers and Streams 2010

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	446.8
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	383.0
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	372.2
DDT	Pesticides	214.2
Benthic Macroinvertebrates Bioassessments	Cause Unknown - Impaired Biota	194.4
Nutrient/Eutrophication Biological Indicators	Nutrients	191.0
Escherichia Coli (E. Coli)	Pathogens	159.2
Habitat Assessment (Streams)	Cause Unknown - Impaired Biota	70.2
Phosphorus, Total	Nutrients	48.3
Other Flow Regime Alterations	Flow Alteration(s)	30.2
Periphyton (Aufwuchs) Indicator Bioassessments (Streams)	Cause Unknown - Impaired Biota	27.8
Biochemical Oxygen Demand (BOD)	Organic Enrichment/Oxygen Depletion	15.2
Ammonia, Un-ionized	Ammonia	12.6
Nitrogen, Total	Nutrients	9.9
Zinc	Metals (other than Mercury)	9.8
Copper	Metals (other than Mercury)	9.8
Lead	Metals (other than Mercury)	9.8
Iron	Metals (other than Mercury)	9.4
Total Suspended Solids (TSS)	Turbidity	8.2
Chlorophyll-A	Algal Growth	8.2
Sedimentation/Siltation	Sediment	6.4
Cadmium	Metals (other than Mercury)	6.1
Nickel	Metals (other than Mercury)	6.1
Chromium, Total	Metals (other than Mercury)	6.1
Benzene	Toxic Organics	4.5
Fish Passage Barrier	Habitat Alterations	4.5
Aluminum	Metals (other than Mercury)	3.7
Selenium	Metals (other than Mercury)	3.7
Arsenic	Metals (other than Mercury)	3.7
Silver	Metals (other than Mercury)	3.7
1,1-Dichloroethane	Toxic Organics	3.2
1,2-Dichloroethane	Pesticides	3.2
pH	pH/Acidity/Caustic Conditions	1.0
Cause Unknown	Cause Unknown	.6

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Site-specific Targeted Monitoring Results

Probable Sources
Maine Rivers and Streams 2010

Probable Source	Probable Source Group	Miles Threatened or Impaired
Non-Point Source	Unspecified Nonpoint Source	333.3
Agriculture	Agriculture	327.3
Inappropriate Waste Disposal	Spills/Dumping	267.1
Industrial Point Source Discharge	Industrial	176.3
Municipal Point Source Discharges	Municipal Discharges/Sewage	163.2
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	62.5
Post-Development Erosion And Sedimentation	Hydromodification	58.1
Dam Or Impoundment	Hydromodification	56.1
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso)	Municipal Discharges/Sewage	39.8
Upstream Source	Other	26.0
Habitat Modification - Other Than Hydromodification	Habitat Alterations (Not Directly Related To Hydromodification)	25.8
Flow Alterations From Water Diversions	Hydromodification	25.0
Impervious Surface/Parking Lot Runoff	Urban-Related Runoff/Stormwater	16.4
Wet Weather Discharges (Non-Point Source)	Urban-Related Runoff/Stormwater	13.4
Rcra Hazardous Waste Sites	Industrial	12.2
Airports	Industrial	10.7
Aquaculture (Permitted)	Aquaculture	9.8
Landfills	Land Application/Waste Sites/Tanks	9.0
Sources Outside State Jurisdiction Or Borders	Other	8.2
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	3.0
Illegal Dumps Or Other Inappropriate Waste Disposal	Spills/Dumping	3.0
Source Unknown	Unknown	2.6
Mine Tailings	Resource Extraction	1.2
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	1.0

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Site-specific Targeted Monitoring Results

Maine Lakes, Reservoirs, and Ponds 2010

Description of this table Assessed Status Acres Assessed 992,085.0 Unassessed .0 Total Acres 992,085.0

Description of this table Attainment Status Acres Good 906,588.0 Threatened .0 Impaired 85,497.0 Total Acres Assessed 992,085.0

Description of this table TMDL Development Status Acres All TMDLs completed 27,750.0 TMDL alternative .0 Non-pollutant impairment 48,964.0 TMDL needed 8,783.0 Total Threatened and Impaired 85,497.0

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Site-specific Targeted Monitoring Results

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

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

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Drinking Water Supply After Disinfection	988,867.0	100.0	.0	.0
Fish And Other Aquatic Life	380,940.0	77.6	.0	22.4
Fish Consumption	988,867.0	100.0	.0	.0
Fishing	988,867.0	100.0	.0	.0
Hydroelectric Power Generation	987,719.0	100.0	.0	.0
Industrial Process And Cooling Water Supply	988,867.0	100.0	.0	.0
Navigation	992,085.0	100.0	.0	.0
Primary Contact Recreation	983,249.0	97.5	.0	2.5
Secondary Contact Recreation	988,867.0	100.0	.0	.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Maine Lakes, Reservoirs, and Ponds 2010

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Habitat Assessment (Lakes)	Cause Unknown - Impaired Biota	48,964.0
Phosphorus, Total	Nutrients	35,899.0
Secchi Disk Transparency	Turbidity	35,899.0
Turbidity	Turbidity	7,865.0
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	634.0

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Site-specific Targeted Monitoring Results

Probable Sources
Maine Lakes, Reservoirs, and Ponds 2010

Probable Source	Probable Source Group	Acres Threatened or Impaired
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	48,964.0
Rural (Residential Areas)	Other	22,580.0
Residential Districts	Urban-Related Runoff/Stormwater	13,358.0
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	11,535.0
Unspecified Unpaved Road Or Trail	Urban-Related Runoff/Stormwater	11,535.0
Internal Nutrient Recycling	Natural/Wildlife	11,490.0
Non-Irrigated Crop Production	Agriculture	10,532.0
Natural Sources	Natural/Wildlife	10,195.0
Crop Production (Crop Land Or Dry Land)	Agriculture	7,491.0
Livestock (Grazing Or Feeding Operations)	Agriculture	5,093.0
Municipal Point Source Discharges	Municipal Discharges/Sewage	4,288.0
Industrial Land Treatment	Industrial	1,820.0
Upstream/Downstream Source	Other	83.0
Flow Alterations From Water Diversions	Hydromodification	30.0
Landfills	Land Application/Waste Sites/Tanks	29.0

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Site-specific Targeted Monitoring Results

Maine Bays and Estuaries 2010

Description of this table Assessed Status Square Miles Assessed 156.4 Unassessed 2,689.6 Total Square Miles 2,846.0

Description of this table Attainment Status Square Miles Good .0 Threatened .0 Impaired 156.4 Total Square Miles Assessed 156.4

Description of this table TMDL Development Status Square Miles All TMDLs completed 153.7 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 2.7 Total Threatened and Impaired 156.4

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Maine Bays and Estuaries 2010

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

Designated Use	Square Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Fish And Other Estuarine And Marine Life	2.7	.0	.0	100.0
Propagation And Harvesting Of Shellfish	153.7	.0	.0	100.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Maine Bays and Estuaries 2010

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Fecal Coliform	Pathogens	156.4
Aquatic Life	Cause Unknown - Impaired Biota	1.2
Toxics	Total Toxics	1.2
Toxicity	Total Toxics	.9
Copper	Metals (other than Mercury)	.9
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	.6
Undetermined NPS Stressor	Cause Unknown - Impaired Biota	.6

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Site-specific Targeted Monitoring Results

Probable Sources
Maine Bays and Estuaries 2010

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Municipal Point Sources	Municipal Discharges/Sewage	156.4
Nonpoint Source	Unspecified Nonpoint Source	155.5
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	155.2
Combined Sewer Overflows	Municipal Discharges/Sewage	2.1
Hazardous Wastes	Land Application/Waste Sites	1.2
Sediment	Hydromodification	.3

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Site-specific Targeted Monitoring Results

Maine Wetlands 2010

Description of this table Pie chart not displayed because total size for Wetlands is unavailable. Assessed Status Acres Assessed 293.0 Unassessed Unavailable Total Acres Unavailable

Description of this table Attainment Status Acres Good 260.0 Threatened .0 Impaired 33.0 Total Acres Assessed 293.0

Description of this table TMDL Development Status Acres All TMDLs completed 10.0 TMDL alternative 10.0 Non-pollutant impairment .0 TMDL needed 13.0 Total Threatened and Impaired 33.0

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Maine Wetlands 2010

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

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Drinking Water Supply After Treatment	8.0	100.0	.0	.0
Fish And Other Aquatic Life	293.0	88.7	.0	11.3
Fish Consumption	8.0	100.0	.0	.0
Fishing	8.0	100.0	.0	.0
Hydroelectric Power Generation	8.0	100.0	.0	.0
Industrial Process And Cooling Water Supply	8.0	100.0	.0	.0
Navigation	8.0	100.0	.0	.0
Primary Contact Recreation	8.0	.0	.0	100.0
Secondary Contact Recreation	8.0	.0	.0	100.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Maine Wetlands 2010

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Benthic Macroinvertebrates Bioassessments	Cause Unknown - Impaired Biota	33.0
Escherichia Coli (E. Coli)	Pathogens	8.0

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Site-specific Targeted Monitoring Results

Probable Sources
Maine Wetlands 2010

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Maine Causes of Impairment for Reporting Year 2010

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Maine Probable Sources Contributing to Impairments
for Reporting Year 2010

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Maine TMDL Alternatives by Cause of Impairment 2010

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)	Wetlands (Acres)
Polychlorinated Biphenyls (PCBs)	24	315
Dioxin (Including 2,3,7,8-TCDD)	22	309
Benthic Macroinvertebrates Bioassessments	9	18	10
Dissolved Oxygen	5	44
Nutrient/Eutrophication Biological Indicators	4	39
Ammonia, Un-ionized	1	1
Benzene	1	5
Biochemical Oxygen Demand (BOD)	1	2
Habitat Assessment (Streams)	1	4
Nitrogen, Total	1	4

Total: 69 TMDL Alternatives

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

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.
Year Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
2008	1	1
2011	6	7

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Maine Causes of Impairment for 303(d) Listed Waters

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
Cause Unknown - Impaired Biota	77
Organic Enrichment/Oxygen Depletion	50
Nutrients	14
Dioxins	6
Pesticides	6
Polychlorinated Biphenyls (PCBs)	6
Pathogens	4
Turbidity	3
Metals (other than Mercury)	3
Total Toxics	2
Algal Growth	1
Cause Unknown	1
pH/Acidity/Caustic Conditions	1
Toxic Organics	1

Total: 175 Causes of Impairment

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Maine Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

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
Fecal Coliform	143	143
Escherichia Coli (E. Coli)	62	62
Phosphorus, Total	47	56
Pollutants in Urban Stormwater	38	70
Lead	6	6
Zinc	6	6
Biochemical Oxygen Demand (BOD)	5	5
NH3	4	4
Copper	3	3
Nitrogen, Total	3	5
Sediment	3	5
Total Suspended Solids (TSS)	3	5
Cadmium	2	2
Carbonaceous Bod	2	6
Iron	2	2
Orthophosphorus	2	6
Aluminum	1	1
Arsenic	1	1
Chromium, Total	1	1
Nickel	1	1
Selenium	1	1
Silver	1	1

Total: 337 TMDLs; 392 Causes of Impairment Addressed

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Maine Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.

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
1999	2	2
2000	11	11
2001	12	12
2002	2	2
2003	12	12
2004	7	7
2005	19	27
2006	6	8
2007	11	11
2008	5	5
2009	205	205
2010	10	23
2012	35	67

Total: 337 TMDLs; 392 Causes of Impairment Addressed

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TMDL Document Search

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