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Site-specific Targeted Monitoring Summary Results

Rhode Island (2010)

Description of this table

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)
Good Waters	369.2	5,720.6	102.3	78.6
Previously impaired waters       now attaining all uses	3.1	14.7	.0
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	547.7	9,861.1	56.5
TMDL completed	66.4	3,386.0	5.5
TMDL alternative
Non-pollutant impairment	19.8	4,942.4	.9
TMDL needed	461.6	1,532.6	50.1
New TMDLs completed	224.2	113.9	.0	.0
Remaining TMDLs needed	237.3	1,418.7	50.1
Total Assessed Waters	917.0	15,581.7	158.8	78.6
Total Waters	1,420.0	20,749.0	159.0	78.6
Percent of Waters Assessed	64.6	75.1	99.9	100.0

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

Site-specific Targeted Monitoring Results

Rhode Island Rivers and Streams 2010

Description of this table Assessed Status Miles Assessed 917.0 Unassessed 503.0 Total Miles 1,420.0

Description of this table Attainment Status Miles Good 369.2 Threatened .0 Impaired 547.7 Total Miles Assessed 917.0

Description of this table TMDL Development Status Miles All TMDLs completed 290.6 TMDL alternative .0 Non-pollutant impairment 19.8 TMDL needed 237.3 Total Threatened and Impaired 547.7

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Rhode Island 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
Fish And Wildlife Habitat	881.8	68.3	.0	31.7
Fish Consumption	53.8	18.9	.0	81.1
Primary Contact Recreation	865.2	45.7	.0	54.3
Public Drinking Water Supply	6.1	100.0	.0	.0
Secondary Contact Recreation	865.2	46.0	.0	54.0
Shellfish Controlled Relay And Depuration	.2	.0	.0	100.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Rhode Island Rivers and Streams 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Enterococcus Bacteria	Pathogens	368.6
Fecal Coliform	Pathogens	138.3
Benthic Macroinvertebrates Bioassessments	Cause Unknown - Impaired Biota	122.4
Non-Native Aquatic Plants	Nuisance Exotic Species	104.1
Lead	Metals (other than Mercury)	98.9
Cadmium	Metals (other than Mercury)	67.7
Copper	Metals (other than Mercury)	64.7
Iron	Metals (other than Mercury)	47.5
Mercury in Fish Tissue	Mercury	43.7
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	37.1
Phosphorus, Total	Nutrients	35.3
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	28.4
Eurasian Water Milfoil, Myriophyllum Spicatum	Nuisance Exotic Species	18.1
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	17.4
Zinc	Metals (other than Mercury)	15.0
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	8.7
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	8.7
Mercury	Mercury	8.7
Aluminum	Metals (other than Mercury)	6.2
Ambient Bioassays - Chronic Aquatic Toxicity	Total Toxics	4.7
Mercury in Water Column	Mercury	4.6
Turbidity	Turbidity	4.2
Aquatic Macroinvertebrate Bioassessments	Cause Unknown - Impaired Biota	4.1
Whole Effluent Toxicity (WET)	Total Toxics	2.2
Aquatic Plants - Native	Nuisance Native Species	1.6
Escherichia Coli (E. Coli)	Pathogens	.1

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Site-specific Targeted Monitoring Results

Probable Sources
Rhode Island Rivers and Streams 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Source Unknown	Unknown	456.9
Introduction Of Non-Native Organisms (Accidental Or Intentional)	Other	104.1
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	76.7
Wildlife Other Than Waterfowl	Natural/Wildlife	63.2
Waterfowl	Natural/Wildlife	34.7
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	29.6
Municipal Point Source Discharges	Municipal Discharges/Sewage	24.9
Natural Sources	Natural/Wildlife	18.3
Cercla Npl (Superfund) Sites	Legacy/Historical Pollutants	17.4
Wastes From Pets	Urban-Related Runoff/Stormwater	15.8
Impervious Surface/Parking Lot Runoff	Urban-Related Runoff/Stormwater	14.4
Agriculture	Agriculture	13.8
Upstream/Downstream Source	Other	12.0
Atmospheric Deposition - Toxics	Atmospheric Deposition	11.0
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	10.4
Illicit Connections/Hook-Ups To Storm Sewers	Municipal Discharges/Sewage	8.7
Contaminated Sediments	Legacy/Historical Pollutants	8.7
Contaminated Groundwater	Groundwater Loadings/Withdrawals	8.2
Landfills	Land Application/Waste Sites/Tanks	8.2
Sanitary Sewer Overflows (Collection System Failures)	Municipal Discharges/Sewage	5.2
Internal Nutrient Recycling	Natural/Wildlife	4.6
Manure Runoff	Agriculture	4.4
Combined Sewer Overflows	Municipal Discharges/Sewage	3.6
Sediment Resuspension (Clean Sediment)	Hydromodification	3.0
Aquaculture (Permitted)	Aquaculture	3.0
Animal Feeding Operations (Nps)	Agriculture	2.7
Industrial Point Source Discharge	Industrial	2.2
Unrestricted Cattle Access	Agriculture	1.6
Illegal Dumps Or Other Inappropriate Waste Disposal	Spills/Dumping	.7

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Site-specific Targeted Monitoring Results

Rhode Island Lakes, Reservoirs, and Ponds 2010

Description of this table Assessed Status Acres Assessed 15,581.7 Unassessed 5,167.3 Total Acres 20,749.0

Description of this table Attainment Status Acres Good 5,720.6 Threatened .0 Impaired 9,861.1 Total Acres Assessed 15,581.7

Description of this table TMDL Development Status Acres All TMDLs completed 3,500.0 TMDL alternative .0 Non-pollutant impairment 4,942.4 TMDL needed 1,418.7 Total Threatened and Impaired 9,861.1

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Rhode Island 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
Fish And Wildlife Habitat	14,990.6	44.1	.0	55.9
Fish Consumption	3,123.8	23.4	.0	76.6
Primary Contact Recreation	14,188.6	97.3	.0	2.7
Public Drinking Water Supply	4,322.5	98.7	.0	1.3
Secondary Contact Recreation	14,188.6	97.3	.0	2.7

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Site-specific Targeted Monitoring Results

Causes of Impairment
Rhode Island Lakes, Reservoirs, and Ponds 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Non-Native Aquatic Plants	Nuisance Exotic Species	6,345.8
Mercury in Fish Tissue	Mercury	2,315.0
Phosphorus, Total	Nutrients	2,272.6
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	1,529.7
Non-Native Fish/Shellfish/Zooplankton	Nuisance Exotic Species	1,332.1
Excess Algal Growth	Algal Growth	1,079.5
Eurasian Water Milfoil, Myriophyllum Spicatum	Nuisance Exotic Species	1,007.2
Lead	Metals (other than Mercury)	498.7
Other Flow Regime Alterations	Flow Alteration(s)	497.1
Fecal Coliform	Pathogens	377.1
Copper	Metals (other than Mercury)	282.4
Cadmium	Metals (other than Mercury)	266.3
Aluminum	Metals (other than Mercury)	266.3
Turbidity	Turbidity	163.9
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	76.7
Taste and Odor	Taste, Color and Odor	42.2
Benthic Macroinvertebrates Bioassessments	Cause Unknown - Impaired Biota	40.7
Aquatic Macroinvertebrate Bioassessments	Cause Unknown - Impaired Biota	38.0
Total Suspended Solids (TSS)	Turbidity	26.3
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	26.3
Iron	Metals (other than Mercury)	21.4
Chlorophyll-A	Algal Growth	12.7

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Site-specific Targeted Monitoring Results

Probable Sources
Rhode Island Lakes, Reservoirs, and Ponds 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Introduction Of Non-Native Organisms (Accidental Or Intentional)	Other	6,345.8
Atmospheric Deposition - Toxics	Atmospheric Deposition	2,315.0
Source Unknown	Unknown	1,856.3
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	1,590.0
Internal Nutrient Recycling	Natural/Wildlife	1,285.5
Waterfowl	Natural/Wildlife	981.0
Agriculture	Agriculture	522.4
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	497.1
Flow Alterations From Water Diversions	Hydromodification	497.1
Upstream/Downstream Source	Other	361.5
Post-Development Erosion And Sedimentation	Hydromodification	311.2
Wildlife Other Than Waterfowl	Natural/Wildlife	262.3
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	221.4
Illegal Dumps Or Other Inappropriate Waste Disposal	Spills/Dumping	143.4
Aquaculture (Permitted)	Aquaculture	130.3
Sediment Resuspension (Clean Sediment)	Hydromodification	130.3
Wastes From Pets	Urban-Related Runoff/Stormwater	119.0
Sanitary Sewer Overflows (Collection System Failures)	Municipal Discharges/Sewage	113.2
Atmospheric Deposition - Nitrogen	Atmospheric Deposition	104.9
Municipal Point Source Discharges	Municipal Discharges/Sewage	38.0
Combined Sewer Overflows	Municipal Discharges/Sewage	38.0

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Site-specific Targeted Monitoring Results

Rhode Island Bays and Estuaries 2010

Description of this table Assessed Status Square Miles Assessed 158.8 Unassessed .1 Total Square Miles 159.0

Description of this table Attainment Status Square Miles Good 102.3 Threatened .0 Impaired 56.5 Total Square Miles Assessed 158.8

Description of this table TMDL Development Status Square Miles All TMDLs completed 5.5 TMDL alternative .0 Non-pollutant impairment .9 TMDL needed 50.1 Total Threatened and Impaired 56.5

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Rhode Island 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
Fish And Wildlife Habitat	109.3	53.9	.0	46.1
Fish Consumption	158.8	100.0	.0	.0
Primary Contact Recreation	155.7	90.0	.0	10.0
Secondary Contact Recreation	155.7	90.0	.0	10.0
Shellfish Consumption	131.7	75.9	.0	24.1
Shellfish Controlled Relay And Depuration	16.5	95.4	.0	4.6

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Site-specific Targeted Monitoring Results

Causes of Impairment
Rhode Island Bays and Estuaries 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	48.6
Fecal Coliform	Pathogens	46.4
Nitrogen, Total	Nutrients	39.5
Temperature, Water	Temperature	9.8
Fish Bioassessments	Cause Unknown - Impaired Biota	9.8
Sediment Bioassays for Estuarine and Marine Water	Total Toxics	1.0
Non-Native Aquatic Plants	Nuisance Exotic Species	.6
Eurasian Water Milfoil, Myriophyllum Spicatum	Nuisance Exotic Species	.3
Enterococcus Bacteria	Pathogens	.0
Phosphorus, Total	Nutrients	.0

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Site-specific Targeted Monitoring Results

Probable Sources
Rhode Island Bays and Estuaries 2010

Description of this table

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Source Unknown	Unknown	44.9
Combined Sewer Overflows	Municipal Discharges/Sewage	34.1
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	18.0
Industrial Thermal Discharges	Industrial	9.8
Cooling Water Intake Structures (Impingement Or Entrainment)	Industrial	9.8
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	7.3
Waterfowl	Natural/Wildlife	5.5
Wildlife Other Than Waterfowl	Natural/Wildlife	5.4
Wastes From Pets	Urban-Related Runoff/Stormwater	2.7
Upstream Source	Other	2.1
Upstream/Downstream Source	Other	1.7
Contaminated Sediments	Legacy/Historical Pollutants	1.0
Municipal Point Source Discharges	Municipal Discharges/Sewage	1.0
Rcra Hazardous Waste Sites	Industrial	1.0
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	.9
Impervious Surface/Parking Lot Runoff	Urban-Related Runoff/Stormwater	.9
Introduction Of Non-Native Organisms (Accidental Or Intentional)	Other	.9
Agriculture	Agriculture	.7
Sanitary Sewer Overflows (Collection System Failures)	Municipal Discharges/Sewage	.4
Landfills	Land Application/Waste Sites/Tanks	.1

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Site-specific Targeted Monitoring Results

Rhode Island Coastal Shoreline 2010

Description of this table Assessed Status Miles Assessed 78.6 Unassessed -.0 Total Miles 78.6

Description of this table Attainment Status Miles Good 78.6 Threatened .0 Impaired .0 Total Miles Assessed 78.6

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

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Rhode Island Coastal 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
Fish Consumption	78.6	100.0	.0	.0
Primary Contact Recreation	78.6	100.0	.0	.0
Secondary Contact Recreation	78.6	100.0	.0	.0
Shellfish Consumption	78.6	100.0	.0	.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Rhode Island Coastal Shoreline 2010

No causes of impairment reported.

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Site-specific Targeted Monitoring Results

Probable Sources
Rhode Island Coastal Shoreline 2010

No probable sources of impairments reported.

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Rhode Island 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)	Coastal Shoreline (Miles)
Algal Growth		1,079.5
Cause Unknown - Impaired Biota	126.5	78.7	9.8
Dioxins	8.7
Flow Alteration(s)		497.1
Mercury	48.3	2,315.0
Metals (other than Mercury)	187.9	785.7
Nuisance Exotic Species	104.1	6,345.8	.9
Nuisance Native Species	1.6
Nutrients	35.3	2,272.6	39.5
Organic Enrichment/Oxygen Depletion	37.1	1,529.7	48.6
Pathogens	470.1	377.1	46.4
Polychlorinated Biphenyls (PCBs)	28.4	76.7
Salinity/Total Dissolved Solids/Chlorides/Sulfates	17.4	26.3
Taste, Color and Odor		42.2
Temperature			9.8
Total Toxics	6.9		1.0
Turbidity	4.2	190.2

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Rhode Island 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)	Coastal Shoreline (Miles)
Agriculture	18.2	522.4	.7
Aquaculture	3.0	130.3
Atmospheric Deposition	11.0	2,419.9
Groundwater Loadings/Withdrawals	8.2
Hydromodification	3.0	825.4
Industrial	2.2		10.8
Land Application/Waste Sites/Tanks	8.2		.1
Legacy/Historical Pollutants	17.4		1.0
Municipal Discharges/Sewage	52.9	372.6	41.8
Natural/Wildlife	81.1	1,489.2	5.5
Other	116.0	6,679.1	4.7
Spills/Dumping	.7	143.4
Unknown	456.9	1,856.3	44.9
Urban-Related Runoff/Stormwater	78.8	1,590.0	19.0

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Rhode Island 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	Bays and Estuaries (Square Miles)
Fish Bioassessments	4	10
Temperature, Water	4	10

Total: 8 TMDL Alternatives

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Rhode Island 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.
Year Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
2008	4	4
2011	1	1
2012	1	1

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Rhode Island 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	95
Metals (other than Mercury)	78
Nutrients	43
Organic Enrichment/Oxygen Depletion	39
Cause Unknown - Impaired Biota	30
Mercury	10
Total Toxics	7
Polychlorinated Biphenyls (PCBs)	7
Turbidity	3
Dioxins	2
Salinity/Total Dissolved Solids/Chlorides/Sulfates	2

Total: 316 Causes of Impairment

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Rhode Island 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
Enterococcus Bacteria	59	59
Fecal Coliform	59	59
Pathogens	20	20
Mercury	19	19
Phosphorus, Total	17	37
Copper	4	4
Lead	4	4
Zinc	4	4
Cadmium	2	2
Escherichia Coli (E. Coli)	1	1
Nutrients	1	4

Total: 190 TMDLs; 213 Causes of Impairment Addressed

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Rhode Island 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
1999	1	3
2001	3	3
2002	7	7
2003	5	5
2004	3	6
2005	2	2
2006	25	28
2007	18	30
2008	28	31
2009	12	12
2010	7	7
2011	65	65
2013	14	14

Total: 190 TMDLs; 213 Causes of Impairment Addressed

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TMDL Document Search

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