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On This Page 303(d) Listed Waters for 2012

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2002 2004 2006 2008 2010

Waterbody Changes from Prior Cycle

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Rhode Island Water Quality Assessment Report

Assessed Waters of Rhode Island by Watershed

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Display impaired waters and TMDL information only



Site-specific Targeted Monitoring Summary Results

Rhode Island (2012)

Description of this table
 
    366.6 6,826.2 102.6 78.6
       3.1 14.7 .0
   
                          
                          
                          
                          
    550.9 8,454.8 56.3
           280.9     3,500.0     5.5     
                          
           23.7     3,585.8     .6     
           246.3     1,369.0     50.1     
              15.8     .0     .0     .0
                    230.6           1,369.0           50.1          
917.5 15,281.0 158.8 78.6
1,420.0 20,749.0 159.0 78.6
64.6 73.6 99.9 100.0

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2012


Site-specific Targeted Monitoring Results

Rhode Island Rivers and Streams 2012

Description of this table

All
Rivers and Streams

1,420.0 Miles of Rivers and Streams

Assessed 917.5
Unassessed 502.5
Total Miles 1,420.0







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Description of this table

Assessed
Rivers and Streams

917.5 Miles of
Assessed Rivers and Streams

Good 366.6
Threatened .0
Impaired 550.9
Total Miles Assessed 917.5







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Description of this table

Threatened and Impaired
Rivers and Streams

550.9 Miles of
Threatened and Impaired
Rivers and Streams

296.7
.0
23.7
230.6
Total Threatened and Impaired 550.9

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Rhode Island Rivers and Streams 2012

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

Description of this table
% Good
% Threatened
% Impaired
Fish And Wildlife Habitat 882.3 68.6 .0 31.4 color.gifcolor.gif
Fish Consumption 53.8 18.9 .0 81.1 color.gifcolor.gif
Primary Contact Recreation 865.7 45.8 .0 54.2 color.gifcolor.gif
Public Drinking Water Supply 6.1 100.0 .0 .0 color.gif
Secondary Contact Recreation 865.7 45.8 .0 54.2 color.gifcolor.gif
Shellfish Controlled Relay And Depuration .2 .0 .0 100.0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Rhode Island Rivers and Streams 2012

Description of this table
Enterococcus Bacteria Pathogens color.gif 367.9
Fecal Coliform Pathogens color.gif 141.9
Benthic Macroinvertebrates Bioassessments Cause Unknown - Impaired Biota color.gif 122.4
Non-Native Aquatic Plants Nuisance Exotic Species color.gif 115.4
Lead Metals (other than Mercury) color.gif 110.8
Cadmium Metals (other than Mercury) color.gif 68.2
Copper Metals (other than Mercury) color.gif 64.7
Iron Metals (other than Mercury) color.gif 48.0
Mercury in Fish Tissue Mercury color.gif 43.7
Phosphorus, Total Nutrients color.gif 38.9
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 37.1
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 28.4
Eurasian Water Milfoil, Myriophyllum Spicatum Nuisance Exotic Species color.gif 18.1
Chloride Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 17.4
Zinc Metals (other than Mercury) color.gif 15.0
Mercury Mercury color.gif 8.7
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 8.7
Polychlorinated Biphenyls (PCBs) Polychlorinated Biphenyls (PCBs) color.gif 8.7
Aluminum Metals (other than Mercury) color.gif 6.8
Ambient Bioassays - Chronic Aquatic Toxicity Total Toxics color.gif 4.7
Mercury in Water Column Mercury color.gif 4.6
Turbidity Turbidity color.gif 4.2
Aquatic Macroinvertebrate Bioassessments Cause Unknown - Impaired Biota color.gif 4.1
Whole Effluent Toxicity (WET) Total Toxics color.gif 2.2
Aquatic Plants - Native Nuisance Native Species color.gif 1.6
Escherichia Coli (E. Coli) Pathogens color.gif .1

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Site-specific Targeted Monitoring Results

Probable Sources
Rhode Island Rivers and Streams 2012

Description of this table
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 347.8
Wildlife Other Than Waterfowl Natural/Wildlife color.gif 337.3
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 303.7
Wastes From Pets Urban-Related Runoff/Stormwater color.gif 290.0
Source Unknown Unknown color.gif 244.4
Agriculture Agriculture color.gif 203.6
Introduction Of Non-Native Organisms (Accidental Or Intentional) Other color.gif 115.4
Waterfowl Natural/Wildlife color.gif 34.7
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 25.7
Natural Sources Natural/Wildlife color.gif 18.3
Cercla Npl (Superfund) Sites Legacy/Historical Pollutants color.gif 17.4
Impervious Surface/Parking Lot Runoff Urban-Related Runoff/Stormwater color.gif 14.4
Upstream/Downstream Source Other color.gif 12.0
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 11.0
Highway/Road/Bridge Runoff (Non-Construction Related) Urban-Related Runoff/Stormwater color.gif 10.4
Contaminated Sediments Legacy/Historical Pollutants color.gif 8.7
Illicit Connections/Hook-Ups To Storm Sewers Municipal Discharges/Sewage color.gif 8.7
Contaminated Groundwater Groundwater Loadings/Withdrawals color.gif 8.2
Landfills Land Application/Waste Sites/Tanks color.gif 8.2
Industrial Point Source Discharge Industrial color.gif 7.3
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 5.2
Internal Nutrient Recycling Natural/Wildlife color.gif 4.6
Manure Runoff Agriculture color.gif 4.4
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 3.6
Sediment Resuspension (Clean Sediment) Hydromodification color.gif 3.0
Aquaculture (Permitted) Aquaculture color.gif 3.0
Animal Feeding Operations (Nps) Agriculture color.gif 2.7
Unrestricted Cattle Access Agriculture color.gif 1.6
Illegal Dumps Or Other Inappropriate Waste Disposal Spills/Dumping color.gif .7

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Site-specific Targeted Monitoring Results

Rhode Island Lakes, Reservoirs, and Ponds 2012

Description of this table

All
Lakes, Reservoirs, and Ponds

20,749.0 Acres of Lakes, Reservoirs, and Ponds

Assessed 15,281.0
Unassessed 5,468.0
Total Acres 20,749.0







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Description of this table

Assessed
Lakes, Reservoirs, and Ponds

15,281.0 Acres of
Assessed Lakes, Reservoirs, and Ponds

Good 6,826.2
Threatened .0
Impaired 8,454.8
Total Acres Assessed 15,281.0







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Description of this table

Threatened and Impaired
Lakes, Reservoirs, and Ponds

8,454.8 Acres of
Threatened and Impaired
Lakes, Reservoirs, and Ponds

3,500.0
.0
3,585.8
1,369.0
Total Threatened and Impaired 8,454.8

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Rhode Island Lakes, Reservoirs, and Ponds 2012

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

Description of this table
% Good
% Threatened
% Impaired
Fish And Wildlife Habitat 14,788.7 53.7 .0 46.3 color.gifcolor.gif
Fish Consumption 3,123.8 23.4 .0 76.6 color.gifcolor.gif
Primary Contact Recreation 14,167.2 97.7 .0 2.3 color.gifcolor.gif
Public Drinking Water Supply 4,322.5 98.7 .0 1.3 color.gifcolor.gif
Secondary Contact Recreation 14,167.2 97.7 .0 2.3 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Rhode Island Lakes, Reservoirs, and Ponds 2012

Description of this table
Non-Native Aquatic Plants Nuisance Exotic Species color.gif 4,783.8
Mercury in Fish Tissue Mercury color.gif 2,315.0
Phosphorus, Total Nutrients color.gif 2,251.3
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 1,529.7
Excess Algal Growth Algal Growth color.gif 1,079.5
Other Flow Regime Alterations Flow Alteration(s) color.gif 497.1
Lead Metals (other than Mercury) color.gif 477.3
Fecal Coliform Pathogens color.gif 327.4
Eurasian Water Milfoil, Myriophyllum Spicatum Nuisance Exotic Species color.gif 301.8
Copper Metals (other than Mercury) color.gif 282.4
Non-Native Fish/Shellfish/Zooplankton Nuisance Exotic Species color.gif 280.9
Cadmium Metals (other than Mercury) color.gif 245.0
Aluminum Metals (other than Mercury) color.gif 245.0
Turbidity Turbidity color.gif 163.9
PCB(s) in Fish Tissue Polychlorinated Biphenyls (PCBs) color.gif 76.7
Taste and Odor Taste, Color and Odor color.gif 42.2
Benthic Macroinvertebrates Bioassessments Cause Unknown - Impaired Biota color.gif 40.7
Aquatic Macroinvertebrate Bioassessments Cause Unknown - Impaired Biota color.gif 38.0
Total Suspended Solids (TSS) Turbidity color.gif 26.3
Chloride Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 26.3
Chlorophyll-A Algal Growth color.gif 12.7

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Site-specific Targeted Monitoring Results

Probable Sources
Rhode Island Lakes, Reservoirs, and Ponds 2012

Description of this table
Introduction Of Non-Native Organisms (Accidental Or Intentional) Other color.gif 4,783.8
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 2,315.0
Source Unknown Unknown color.gif 1,692.6
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 1,590.0
Internal Nutrient Recycling Natural/Wildlife color.gif 1,285.5
Waterfowl Natural/Wildlife color.gif 981.0
Agriculture Agriculture color.gif 522.4
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif 497.1
Flow Alterations From Water Diversions Hydromodification color.gif 497.1
Wildlife Other Than Waterfowl Natural/Wildlife color.gif 376.3
Upstream/Downstream Source Other color.gif 361.5
Post-Development Erosion And Sedimentation Hydromodification color.gif 311.2
Wastes From Pets Urban-Related Runoff/Stormwater color.gif 232.9
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 221.4
Illegal Dumps Or Other Inappropriate Waste Disposal Spills/Dumping color.gif 143.4
Aquaculture (Permitted) Aquaculture color.gif 130.3
Sediment Resuspension (Clean Sediment) Hydromodification color.gif 130.3
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif 113.2
Atmospheric Deposition - Nitrogen Atmospheric Deposition color.gif 104.9
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 38.0
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 38.0

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Site-specific Targeted Monitoring Results

Rhode Island Bays and Estuaries 2012

Description of this table

All
Bays and Estuaries

159.0 Square Miles of Bays and Estuaries

Assessed 158.8
Unassessed .1
Total Square Miles 159.0







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Description of this table

Assessed
Bays and Estuaries

158.8 Square Miles of
Assessed Bays and Estuaries

Good 102.6
Threatened .0
Impaired 56.3
Total Square Miles Assessed 158.8







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Description of this table

Threatened and Impaired
Bays and Estuaries

56.3 Square Miles of
Threatened and Impaired
Bays and Estuaries

5.5
.0
.6
50.1
Total Threatened and Impaired 56.3

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Rhode Island Bays and Estuaries 2012

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

Description of this table
% Good
% Threatened
% Impaired
Fish And Wildlife Habitat 109.3 54.1 .0 45.9 color.gifcolor.gif
Fish Consumption 158.8 100.0 .0 .0 color.gif
Primary Contact Recreation 153.3 89.8 .0 10.2 color.gifcolor.gif
Secondary Contact Recreation 153.3 89.8 .0 10.2 color.gifcolor.gif
Shellfish Consumption 131.7 75.9 .0 24.1 color.gifcolor.gif
Shellfish Controlled Relay And Depuration 16.5 95.4 .0 4.6 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Rhode Island Bays and Estuaries 2012

Description of this table
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 48.6
Fecal Coliform Pathogens color.gif 46.4
Nitrogen, Total Nutrients color.gif 39.5
Fish Bioassessments Cause Unknown - Impaired Biota color.gif 9.8
Temperature, Water Temperature color.gif 9.8
Sediment Bioassays for Estuarine and Marine Water Total Toxics color.gif 1.0
Non-Native Aquatic Plants Nuisance Exotic Species color.gif .6
Enterococcus Bacteria Pathogens color.gif .0
Phosphorus, Total Nutrients color.gif .0

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Site-specific Targeted Monitoring Results

Probable Sources
Rhode Island Bays and Estuaries 2012

Description of this table
Source Unknown Unknown color.gif 44.9
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 34.1
Urban Runoff/Storm Sewers Urban-Related Runoff/Stormwater color.gif 18.0
Industrial Thermal Discharges Industrial color.gif 9.8
Cooling Water Intake Structures (Impingement Or Entrainment) Industrial color.gif 9.8
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 7.3
Waterfowl Natural/Wildlife color.gif 5.5
Wildlife Other Than Waterfowl Natural/Wildlife color.gif 5.4
Wastes From Pets Urban-Related Runoff/Stormwater color.gif 2.7
Upstream Source Other color.gif 2.1
Upstream/Downstream Source Other color.gif 1.7
Contaminated Sediments Legacy/Historical Pollutants color.gif 1.0
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 1.0
Rcra Hazardous Waste Sites Industrial color.gif 1.0
Highway/Road/Bridge Runoff (Non-Construction Related) Urban-Related Runoff/Stormwater color.gif .9
Impervious Surface/Parking Lot Runoff Urban-Related Runoff/Stormwater color.gif .9
Agriculture Agriculture color.gif .7
Introduction Of Non-Native Organisms (Accidental Or Intentional) Other color.gif .6
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif .4
Landfills Land Application/Waste Sites/Tanks color.gif .1

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Site-specific Targeted Monitoring Results

Rhode Island Coastal Shoreline 2012

Description of this table

All
Coastal Shoreline

78.6 Miles of Coastal Shoreline

Assessed 78.6
Unassessed -.0
Total Miles 78.6







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Description of this table

Assessed
Coastal Shoreline

78.6 Miles of
Assessed Coastal Shoreline

Good 78.6
Threatened .0
Impaired .0
Total Miles Assessed 78.6







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Description of this table

Threatened and Impaired
Coastal Shoreline

.0 Miles of
Threatened and Impaired
Coastal Shoreline

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

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Rhode Island Coastal Shoreline 2012

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

Description of this table
% Good
% Threatened
% Impaired
Fish Consumption 78.6 100.0 .0 .0 color.gif
Primary Contact Recreation 78.6 100.0 .0 .0 color.gif
Secondary Contact Recreation 78.6 100.0 .0 .0 color.gif
Shellfish Consumption 78.6 100.0 .0 .0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
Rhode Island Coastal Shoreline 2012

No causes of impairment reported.

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Site-specific Targeted Monitoring Results

Probable Sources
Rhode Island Coastal Shoreline 2012

No probable sources of impairments reported.

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Rhode Island Causes of Impairment for Reporting Year 2012


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 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) 198.1 764.4
Nuisance Exotic Species 115.4 4,783.8 .6
Nuisance Native Species 1.6
Nutrients 38.9 2,251.3 39.5
Organic Enrichment/Oxygen Depletion 37.1 1,529.7 48.6
Pathogens 469.4 327.4 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 2012

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 208.0 522.4 .7
Aquaculture 3.0 130.3
Atmospheric Deposition 11.0 2,419.9
Groundwater Loadings/Withdrawals 8.2
Hydromodification 3.0 825.4
Industrial 7.3 10.8
Land Application/Waste Sites/Tanks 8.2 .1
Legacy/Historical Pollutants 17.4 1.0
Municipal Discharges/Sewage 327.0 372.6 41.8
Natural/Wildlife 350.6 1,489.2 5.5
Other 123.4 5,117.1 4.4
Spills/Dumping .7 143.4
Unknown 244.4 1,692.6 44.9
Urban-Related Runoff/Stormwater 349.9 1,590.0 19.0

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Rhode Island TMDL Alternatives by Cause of Impairment 2012


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.
Fish Bioassessments color.gif 4 10
Temperature, Water color.gif 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.
2008 color.gif 4 4
2011 color.gif 1 1
2012 color.gif 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.
Metals (other than Mercury) color.gif 76
Nutrients color.gif 43
Organic Enrichment/Oxygen Depletion color.gif 39
Pathogens color.gif 36
Cause Unknown - Impaired Biota color.gif 30
Mercury color.gif 10
Total Toxics color.gif 7
Polychlorinated Biphenyls (PCBs) color.gif 7
Turbidity color.gif 3
Dioxins color.gif 2
Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 2

Total: 255 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.
Number of Causes of
Impairment Addressed
Enterococcus Bacteria color.gif 67 67
Fecal Coliform color.gif 61 61
Phosphorus, Total color.gif 22 43
Pathogens color.gif 20 20
Mercury color.gif 19 19
Cadmium color.gif 7 7
Aluminum color.gif 5 5
Lead color.gif 5 5
Copper color.gif 4 4
Zinc color.gif 4 4
Escherichia Coli (E. Coli) color.gif 1 1
Iron color.gif 1 1
Nutrients color.gif 1 4

Total: 217 TMDLs; 241 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.
1999 color.gif 1 3
2001 color.gif 3 3
2002 color.gif 7 7
2003 color.gif 5 5
2004 color.gif 3 6
2005 color.gif 2 2
2006 color.gif 25 28
2007 color.gif 18 30
2008 color.gif 28 31
2009 color.gif 12 12
2010 color.gif 7 7
2011 color.gif 65 65
2013 color.gif 14 14
2014 color.gif 27 28

Total: 217 TMDLs; 241 Causes of Impairment Addressed

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