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On This Page 303(d) Listed Waters for 2008

Data are also available for these cycles:
2002 2004 2006 2010

Waterbody Changes from Prior Cycle

For More Information:

New Hampshire Assessment Report Exit EPA Disclaimer
State Water Quality Program Exit EPA Disclaimer

Download Excel compatible information

Download GIS Information

New Hampshire Water Quality Assessment Report

Assessed Waters of New Hampshire by Watershed

Select a watershed from the list:
or click on the map to choose a watershed:
Search for a waterbody within New Hampshire
Enter Waterbody Name:
Display impaired waters and TMDL information only


NOTE: In New Hampshire, all surface waters are listed as impaired for fish/shellfish consumption due to a statewide fish consumption advisory that is in effect because of elevated mercury levels in fish tissue. Excluding the statewide mercury fish/shellfish consumption advisory, the number of impaired waters is significantly less. To see assessment summaries that exclude the statewide mercury fish consumption advisory, see New Hampshire's Water Quality Assessment website.



Site-specific Targeted Monitoring Summary Results

New Hampshire (2008)

Description of this table
 
   
      
   
                          
                          
                          
                          
    9,658.5 186,010.8 17.7 70.1
           7,044.2     149,918.4          
                          
                          
           2,614.3     36,092.3     17.7     70.1
              223.5     5,152.5     .0     .0
                    2,390.8           30,939.9           17.7           70.1
9,658.5 186,010.8 17.7 70.1
9,658.5 186,010.8 17.7 70.1
100.0 100.0 100.0 99.9

For the 2008 Integrated Report Cycle, the total assessed waters size is greater than the total waters size for the EPA Waterbody Type Rivers and Streams in New Hampshire. This discrepancy was identified after the release of the data, and is likely due to the improvements in mapping state waters.

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2008


Site-specific Targeted Monitoring Results

New Hampshire Rivers and Streams 2008

Description of this table
Assessed 9,658.5
Unassessed -.0
Total Miles 9,658.5







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Description of this table
Good .0
Threatened .0
Impaired 9,658.5
Total Miles Assessed 9,658.5







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Description of this table
7,267.7
.0
.0
2,390.8
Total Threatened and Impaired 9,658.5

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
New Hampshire Rivers and Streams 2008

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

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life 2,725.6 9.0 .0 91.0 color.gifcolor.gif
Drinking Water After Adequate Treatment 9,658.2 100.0 .0 .0 color.gif
Fish Consumption 9,658.5 .0 .0 100.0 color.gif
Primary Contact Recreation 1,705.8 47.4 .0 52.6 color.gifcolor.gif
Secondary Contact Recreation 1,640.8 92.8 .0 7.2 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
New Hampshire Rivers and Streams 2008

Description of this table
Mercury Mercury color.gif 9,658.5
pH pH/Acidity/Caustic Conditions color.gif 2,098.1
Escherichia Coli (E. Coli) Pathogens color.gif 868.3
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 380.1
Aluminum Metals (other than Mercury) color.gif 281.5
Dissolved Oxygen Saturation Organic Enrichment/Oxygen Depletion color.gif 263.3
Benthic Macroinvertebrates Bioassessments Cause Unknown - Impaired Biota color.gif 256.1
Habitat Assessment (Streams) Cause Unknown - Impaired Biota color.gif 81.1
Lead Metals (other than Mercury) color.gif 77.8
Chloride Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 63.1
Fish Bioassessments Cause Unknown - Impaired Biota color.gif 60.5
Iron Metals (other than Mercury) color.gif 47.7
Aquatic Algae Algal Growth color.gif 47.4
Chlorophyll-A Algal Growth color.gif 40.8
Other Flow Regime Alterations Flow Alteration(s) color.gif 37.8
Non-Native Aquatic Plants Nuisance Exotic Species color.gif 34.9
Copper Metals (other than Mercury) color.gif 28.8
Phosphorus, Total Nutrients color.gif 28.8
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 18.2
Zinc Metals (other than Mercury) color.gif 7.5
Physical Substrate Habitat Alterations Habitat Alterations color.gif 6.6
Biochemical Oxygen Demand (BOD) Organic Enrichment/Oxygen Depletion color.gif 6.1
Foam/Flocs/Scum/Oil Slicks Other Cause color.gif 5.4
Creosote Toxic Organics color.gif 3.5
Taste and Odor Taste, Color and Odor color.gif 3.1
Manganese Metals (other than Mercury) color.gif 3.0
Low Flow Alterations Flow Alteration(s) color.gif 2.4
Ammonia, Un-ionized Ammonia color.gif 1.5
Arsenic Metals (other than Mercury) color.gif 1.5
Cadmium Metals (other than Mercury) color.gif 1.0
DDD Pesticides color.gif .5
Chromium, Total Metals (other than Mercury) color.gif .5
Turbidity Turbidity color.gif .5
Sedimentation/Siltation Sediment color.gif .5
Benzo[a]pyrene (PAHs) Toxic Organics color.gif .2

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Site-specific Targeted Monitoring Results

Probable Sources
New Hampshire Rivers and Streams 2008

Description of this table
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 9,658.5
Source Unknown Unknown color.gif 2,599.7
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 59.8
Municipal (Urbanized High Density Area) Urban-Related Runoff/Stormwater color.gif 49.4
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 49.1
Highway/Road/Bridge Runoff (Non-Construction Related) Urban-Related Runoff/Stormwater color.gif 41.2
Commercial Districts (Shopping/Office Complexes) Urban-Related Runoff/Stormwater color.gif 40.9
Illicit Connections/Hook-Ups To Storm Sewers Municipal Discharges/Sewage color.gif 37.4
Industrial Point Source Discharge Industrial color.gif 32.8
Landfills Land Application/Waste Sites/Tanks color.gif 26.9
Freshettes Or Major Flooding Natural/Wildlife color.gif 25.5
Impervious Surface/Parking Lot Runoff Urban-Related Runoff/Stormwater color.gif 18.7
Unspecified Urban Stormwater Urban-Related Runoff/Stormwater color.gif 18.1
Streambank Modifications/Destabilization Hydromodification color.gif 14.2
Contaminated Groundwater Groundwater Loadings/Withdrawals color.gif 11.6
Inappropriate Waste Disposal Spills/Dumping color.gif 8.0
Manure Runoff Agriculture color.gif 7.3
Livestock (Grazing Or Feeding Operations) Agriculture color.gif 7.0
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif 6.9
Acid Mine Drainage Resource Extraction color.gif 5.3
Airports Industrial color.gif 4.1
Industrial/Commercial Site Stormwater Discharge (Permitted) Urban-Related Runoff/Stormwater color.gif 4.1
Rcra Hazardous Waste Sites Industrial color.gif 3.5
Sand/Gravel/Rock Mining Or Quarries Resource Extraction color.gif 3.5
Channelization Hydromodification color.gif 3.1
Unpermitted Discharge (Industrial/Commercial Wastes) Spills/Dumping color.gif 2.7
Flow Alterations From Water Diversions Hydromodification color.gif 2.4
Unpermitted Discharge (Domestic Wastes) Municipal Discharges/Sewage color.gif 2.4
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso) Municipal Discharges/Sewage color.gif 2.0
Habitat Modification - Other Than Hydromodification Habitat Alterations (Not Directly Related To Hydromodification) color.gif 1.3
Salt Storage Sites Land Application/Waste Sites/Tanks color.gif .5
Highways, Roads, Bridges, Infrastructure (New Construction) Construction color.gif .5
Animal Feeding Operations (Nps) Agriculture color.gif .3
Petroleum/Natural Gas Activities Resource Extraction color.gif .2
Pollutants From Public Bathing Areas Recreation And Tourism (Non-Boating) color.gif .0

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Site-specific Targeted Monitoring Results

New Hampshire Lakes, Reservoirs, and Ponds 2008

Description of this table
Assessed 186,010.8
Unassessed .0
Total Acres 186,010.8







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Description of this table
Good .0
Threatened .0
Impaired 186,010.8
Total Acres Assessed 186,010.8







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Description of this table
155,070.9
.0
.0
30,939.9
Total Threatened and Impaired 186,010.8

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
New Hampshire Lakes, Reservoirs, and Ponds 2008

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

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life 113,381.8 6.4 .0 93.6 color.gifcolor.gif
Drinking Water After Adequate Treatment 186,010.8 100.0 .0 .0 color.gif
Fish Consumption 186,010.8 .0 .0 100.0 color.gif
Primary Contact Recreation 132,154.8 89.3 .0 10.7 color.gifcolor.gif
Secondary Contact Recreation 129,748.0 98.0 .0 2.0 color.gifcolor.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
New Hampshire Lakes, Reservoirs, and Ponds 2008

Description of this table
Mercury Mercury color.gif 186,010.8
pH pH/Acidity/Caustic Conditions color.gif 97,346.9
Non-Native Aquatic Plants Nuisance Exotic Species color.gif 69,024.0
Dissolved Oxygen Saturation Organic Enrichment/Oxygen Depletion color.gif 17,048.6
Cyanobacteria Hepatotoxic Microcystins Biotoxins color.gif 8,920.9
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 8,729.8
Escherichia Coli (E. Coli) Pathogens color.gif 4,278.1
Turbidity Turbidity color.gif 4,249.8
Chlorophyll-A Algal Growth color.gif 3,265.7
Aluminum Metals (other than Mercury) color.gif 653.2
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 384.1
Sedimentation/Siltation Sediment color.gif 214.1
Chloride Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 109.2
Other Flow Regime Alterations Flow Alteration(s) color.gif 91.0
Phosphorus, Total Nutrients color.gif 43.1
DDE Pesticides color.gif 10.0
Indeno[1,2,3-Cd]Pyrene Pesticides color.gif 10.0
Lindane Pesticides color.gif 10.0
Dieldrin Pesticides color.gif 10.0
Benzo[a]anthracene Toxic Organics color.gif 10.0
2-Methylnaphthalene Pesticides color.gif 10.0
Chrysene Toxic Organics color.gif 10.0
Endrin Pesticides color.gif 10.0
Pyrene Toxic Organics color.gif 10.0
Benzo[b]fluoranthene Toxic Organics color.gif 10.0
Heptachlor Pesticides color.gif 10.0
Benzo[k]fluoranthene Toxic Organics color.gif 10.0
Acenaphthene Toxic Organics color.gif 10.0
DDD Pesticides color.gif 10.0
Benzo[a]pyrene (PAHs) Toxic Organics color.gif 10.0
Excess Algal Growth Algal Growth color.gif 1.3

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Site-specific Targeted Monitoring Results

Probable Sources
New Hampshire Lakes, Reservoirs, and Ponds 2008

Description of this table
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 186,010.8
Atmospheric Deposition - Acidity Atmospheric Deposition color.gif 89,796.3
Source Unknown Unknown color.gif 88,146.3
Highways, Roads, Bridges, Infrastructure (New Construction) Construction color.gif 4,253.3
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 1,092.0
Impacts From Hydrostructure Flow Regulation/Modification Hydromodification color.gif 586.0
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 562.0
Municipal (Urbanized High Density Area) Urban-Related Runoff/Stormwater color.gif 434.6
Industrial Point Source Discharge Industrial color.gif 415.5
Illicit Connections/Hook-Ups To Storm Sewers Municipal Discharges/Sewage color.gif 239.1
Waterfowl Natural/Wildlife color.gif 230.0
Unpermitted Discharge (Domestic Wastes) Municipal Discharges/Sewage color.gif 223.3
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif 222.0
Streambank Modifications/Destabilization Hydromodification color.gif 210.0
Channel Erosion/Incision From Upstream Hydromodifications Hydromodification color.gif 210.0
Package Plant Or Other Permitted Small Flows Discharges Municipal Discharges/Sewage color.gif 142.2
Highway/Road/Bridge Runoff (Non-Construction Related) Urban-Related Runoff/Stormwater color.gif 112.7
Commercial Districts (Shopping/Office Complexes) Urban-Related Runoff/Stormwater color.gif 109.2
Residential Districts Urban-Related Runoff/Stormwater color.gif 62.2
Flow Alterations From Water Diversions Hydromodification color.gif 42.4
Pollutants From Public Bathing Areas Recreation And Tourism (Non-Boating) color.gif 20.1
Animal Feeding Operations (Nps) Agriculture color.gif 14.8
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso) Municipal Discharges/Sewage color.gif 6.8
Freshettes Or Major Flooding Natural/Wildlife color.gif 5.0
Yard Maintenance Urban-Related Runoff/Stormwater color.gif .6

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Site-specific Targeted Monitoring Results

New Hampshire Bays and Estuaries 2008

Description of this table
Assessed 17.7
Unassessed .0
Total Square Miles 17.7







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Description of this table
Good .0
Threatened .0
Impaired 17.7
Total Square Miles Assessed 17.7







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Description of this table
.0
.0
.0
17.7
Total Threatened and Impaired 17.7

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
New Hampshire Bays and Estuaries 2008

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

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life 16.0 .0 .6 99.4 color.gifcolor.gif
Drinking Water After Adequate Treatment 17.7 100.0 .0 .0 color.gif
Fish Consumption 17.7 .0 .0 100.0 color.gif
Primary Contact Recreation 14.7 25.6 .0 74.4 color.gifcolor.gif
Secondary Contact Recreation 14.0 72.4 .0 27.6 color.gifcolor.gif
Shellfishing 17.7 .0 .0 100.0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
New Hampshire Bays and Estuaries 2008

Description of this table
Polychlorinated Biphenyls (PCBs) Polychlorinated Biphenyls (PCBs) color.gif 17.7
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 17.7
Mercury Mercury color.gif 17.7
Estuarine Bioassessments Cause Unknown - Impaired Biota color.gif 15.2
Nitrogen, Total Nutrients color.gif 14.2
Light Attenuation Coefficient Turbidity color.gif 13.0
Enterococcus Bacteria Pathogens color.gif 11.0
Fecal Coliform Pathogens color.gif 9.3
Dissolved Oxygen Organic Enrichment/Oxygen Depletion color.gif 8.0
pH pH/Acidity/Caustic Conditions color.gif 7.7
Chlorophyll-A Algal Growth color.gif 1.7
Dissolved Oxygen Saturation Organic Enrichment/Oxygen Depletion color.gif .9
Chrysene Toxic Organics color.gif .4
Pyrene Toxic Organics color.gif .4
2-Methylnaphthalene Pesticides color.gif .4
Naphthalene Pesticides color.gif .4
Dibenz[a,h]anthracene Toxic Organics color.gif .4
Benzo[a]pyrene (PAHs) Toxic Organics color.gif .4
DDE Pesticides color.gif .4
DDD Pesticides color.gif .4
DDT Pesticides color.gif .4
Benzo[a]anthracene Toxic Organics color.gif .4
Anthracene Toxic Organics color.gif .4
Fluoranthene Toxic Organics color.gif .4
Fluorene Toxic Organics color.gif .4
Benzo[g,h,i]perylene Toxic Organics color.gif .2
Dieldrin Pesticides color.gif .2
Acenaphthene Toxic Organics color.gif .2
Acenaphthylene Toxic Organics color.gif .2
Phenanthrene Toxic Organics color.gif .2
Indeno[1,2,3-Cd]Pyrene Pesticides color.gif .2
Biphenyl Toxic Organics color.gif .2

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Site-specific Targeted Monitoring Results

Probable Sources
New Hampshire Bays and Estuaries 2008

Description of this table
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 17.7
Source Unknown Unknown color.gif 17.7
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso) Municipal Discharges/Sewage color.gif 2.5
Combined Sewer Overflows Municipal Discharges/Sewage color.gif 1.0
Animal Feeding Operations (Nps) Agriculture color.gif .5
Sanitary Sewer Overflows (Collection System Failures) Municipal Discharges/Sewage color.gif .4
Illicit Connections/Hook-Ups To Storm Sewers Municipal Discharges/Sewage color.gif .4
Petroleum/Natural Gas Activities Resource Extraction color.gif .2
Unpermitted Discharge (Domestic Wastes) Municipal Discharges/Sewage color.gif .1
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) Municipal Discharges/Sewage color.gif .1

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Site-specific Targeted Monitoring Results

New Hampshire Ocean and Near Coastal 2008

Description of this table
Assessed 70.1
Unassessed .0
Total Square Miles 70.1







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Description of this table
Good .0
Threatened .0
Impaired 70.1
Total Square Miles Assessed 70.1







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Description of this table
.0
.0
.0
70.1
Total Threatened and Impaired 70.1

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
New Hampshire Ocean and Near Coastal 2008

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

Description of this table
% Good
% Threatened
% Impaired
Aquatic Life 1.5 16.7 .0 83.3 color.gifcolor.gif
Drinking Water After Adequate Treatment 70.1 100.0 .0 .0 color.gif
Fish Consumption 70.1 .0 .0 100.0 color.gif
Primary Contact Recreation 4.3 1.4 .0 98.6 color.gifcolor.gif
Secondary Contact Recreation 1.0 56.7 .0 43.3 color.gifcolor.gif
Shellfishing 70.1 .0 .0 100.0 color.gif

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Site-specific Targeted Monitoring Results

Causes of Impairment
New Hampshire Ocean and Near Coastal 2008

Description of this table
Polychlorinated Biphenyls (PCBs) Polychlorinated Biphenyls (PCBs) color.gif 70.1
Dioxin (Including 2,3,7,8-TCDD) Dioxins color.gif 70.1
Mercury Mercury color.gif 70.1
Enterococcus Bacteria Pathogens color.gif 4.2
Fecal Coliform Pathogens color.gif 1.8
Biochemical Oxygen Demand (BOD) Organic Enrichment/Oxygen Depletion color.gif 1.3

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Site-specific Targeted Monitoring Results

Probable Sources
New Hampshire Ocean and Near Coastal 2008

Description of this table
Atmospheric Deposition - Toxics Atmospheric Deposition color.gif 70.1
Source Unknown Unknown color.gif 70.1
Forced Drainage Pumping Hydromodification color.gif 1.6
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso) Municipal Discharges/Sewage color.gif 1.5
Municipal Point Source Discharges Municipal Discharges/Sewage color.gif 1.3
Waterfowl Natural/Wildlife color.gif .1
Unpermitted Discharge (Domestic Wastes) Municipal Discharges/Sewage color.gif .1
Sewage Discharges In Unsewered Areas Municipal Discharges/Sewage color.gif .0

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New Hampshire Causes of Impairment for Reporting Year 2008


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 88.2 3,267.0 1.7
Ammonia 1.5
Biotoxins 8,920.9
Cause Unknown - Impaired Biota 312.9 15.2
Dioxins 18.2 384.1 17.7 70.1
Flow Alteration(s) 40.2 91.0
Habitat Alterations 6.6
Mercury 9,658.5 186,010.8 17.7 70.1
Metals (other than Mercury) 369.5 653.2
Nuisance Exotic Species 34.9 69,024.0
Nutrients 28.8 43.1 14.2
Organic Enrichment/Oxygen Depletion 430.3 17,201.9 8.0 1.3
Other Cause 5.4
Pathogens 868.3 4,278.1 13.2 4.3
Pesticides .5 10.0 .4
pH/Acidity/Caustic Conditions 2,098.1 97,346.9 7.7
Polychlorinated Biphenyls (PCBs) 17.7 70.1
Salinity/Total Dissolved Solids/Chlorides/Sulfates 63.1 109.2
Sediment .5 214.1
Taste, Color and Odor 3.1
Toxic Organics 3.7 10.0 .4
Turbidity .5 4,249.8 13.0

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New Hampshire Probable Sources Contributing to Impairments
for Reporting Year 2008

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 14.6 14.8 .5
Atmospheric Deposition 9,658.5 186,010.8 17.7 70.1
Construction .5 4,253.3
Groundwater Loadings/Withdrawals 11.6
Habitat Alterations (Not Directly Related To Hydromodification) 1.3
Hydromodification 26.5 838.4 1.6
Industrial 40.3 415.5
Land Application/Waste Sites/Tanks 27.4
Municipal Discharges/Sewage 148.0 2,215.3 3.4 2.8
Natural/Wildlife 25.5 235.0 .1
Recreation And Tourism (Non-Boating) .0 20.1
Resource Extraction 8.9 .2
Spills/Dumping 10.8
Unknown 2,599.7 88,146.3 17.7 70.1
Urban-Related Runoff/Stormwater 60.0 500.9

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New Hampshire TMDL Alternatives by Cause of Impairment 2008


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.
Escherichia Coli (E. Coli) color.gif 28 42 218  
Dioxin (Including 2,3,7,8-TCDD) color.gif 18 18 384  
Phosphorus, Total color.gif 4 8    
Copper color.gif 3 12    
Iron color.gif 3 10    
Biochemical Oxygen Demand (BOD) color.gif 2 6   1
Aluminum color.gif 1 2    
Ammonia, Un-ionized color.gif 1 2    
Dissolved Oxygen color.gif 1 4    

Total: 61 TMDL Alternatives

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


No previously 303(d)-listed waters reported as now attaining all applicable water quality standards.

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New Hampshire 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.
pH/Acidity/Caustic Conditions color.gif 616
Pathogens color.gif 395
Organic Enrichment/Oxygen Depletion color.gif 330
Metals (other than Mercury) color.gif 114
Cause Unknown - Impaired Biota color.gif 95
Mercury color.gif 91
Dioxins color.gif 90
Polychlorinated Biphenyls (PCBs) color.gif 90
Algal Growth color.gif 56
Biotoxins color.gif 53
Nutrients color.gif 40
Toxic Organics color.gif 30
Turbidity color.gif 29
Salinity/Total Dissolved Solids/Chlorides/Sulfates color.gif 28
Pesticides color.gif 21
Sediment color.gif 3
Other Cause color.gif 2
Taste, Color and Odor color.gif 1

Total: 2,084 Causes of Impairment

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New Hampshire 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
Mercury color.gif 5,124 5,124
Escherichia Coli (E. Coli) color.gif 380 380
pH color.gif 372 372
Fecal Coliform color.gif 48 48
Enterococcus Bacteria color.gif 39 39
Phosphorus, Total color.gif 29 69
Chloride color.gif 4 4
pH, Low color.gif 3 6
Carbonaceous Bod color.gif 2 2
NH3-N color.gif 2 2
Biochemical Oxygen Demand (BOD) color.gif 1 2
Iron color.gif 1 1
NH3 color.gif 1 2

Total: 6,006 TMDLs; 6,051 Causes of Impairment Addressed


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New Hampshire 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.
2000 color.gif 5 8
2001 color.gif 3 3
2002 color.gif 1 1
2003 color.gif 2 2
2004 color.gif 53 53
2005 color.gif 20 20
2006 color.gif 23 26
2007 color.gif 160 160
2008 color.gif 5,238 5,238
2009 color.gif 4 4
2010 color.gif 403 403
2011 color.gif 91 130
2012 color.gif 3 3

Total: 6,006 TMDLs; 6,051 Causes of Impairment Addressed

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