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Site-specific Targeted Monitoring Summary Results

Alaska (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	158.4	3,427.0	30.7
Previously impaired waters       now attaining all uses	24.1
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	443.4	2,554.1	.7	17.6
TMDL completed	146.8	995.0	.7
TMDL alternative	6.2		.0	12.6
Non-pollutant impairment
TMDL needed	290.4	1,559.1	.0	5.0
New TMDLs completed	.0	1,250.0	.0	.0
Remaining TMDLs needed	290.4	309.1	.0	5.0
Total Assessed Waters	601.8	5,981.1	31.4	17.6
Total Waters	365,000.0	12,787,200.0	33,204.0	36,000.0
Percent of Waters Assessed	.2	.0	.1	.0

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

Site-specific Targeted Monitoring Results

Alaska Rivers and Streams 2010

Description of this table Assessed Status Miles Assessed 601.8 Unassessed 364,398.2 Total Miles 365,000.0

Description of this table Attainment Status Miles Good 158.4 Threatened .0 Impaired 443.4 Total Miles Assessed 601.8

Description of this table TMDL Development Status Miles All TMDLs completed 146.8 TMDL alternative 6.2 Non-pollutant impairment .0 TMDL needed 290.4 Total Threatened and Impaired 443.4

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Alaska 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
Fresh Water / Growth And Propagation Of Fish, Shellfish, Other Aquatic Life And Wildlife	490.4	10.5	.0	89.5
Fresh Water / Water Recreation / Contact Recreation	423.5	10.2	.0	89.8
Fresh Water / Water Recreation / Secondary Recreation	423.5	10.2	.0	89.8
Fresh Water / Water Supply / Agriculture, Including Irrigation And Stock Watering	423.5	10.2	.0	89.8
Fresh Water / Water Supply / Aquaculture	423.5	10.2	.0	89.8
Fresh Water / Water Supply / Drinking, Culinary, And Food Processing	576.3	23.1	.0	76.9
Fresh Water / Water Supply / Industrial	396.5	4.1	.0	95.9
Marine Water / Water Supply / Aquaculture	1.0	100.0	.0	.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Alaska Rivers and Streams 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Turbidity	Turbidity	318.0
Fecal Coliform	Pathogens	67.3
Sedimentation/Siltation	Sediment	55.0
Petroleum Hydrocarbons	Oil and Grease	18.3
Debris/Floatables/Trash	Trash	16.0
Copper	Metals (other than Mercury)	14.1
Iron	Metals (other than Mercury)	9.1
Lead	Metals (other than Mercury)	9.0
Chlorine	Chlorine	8.0
Ammonia, Un-ionized	Ammonia	8.0
Silver	Metals (other than Mercury)	8.0
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	7.0
Cadmium	Metals (other than Mercury)	6.1
Manganese	Metals (other than Mercury)	4.7
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	4.5
Arsenic	Metals (other than Mercury)	2.9
Aluminum	Metals (other than Mercury)	2.6
Zinc	Metals (other than Mercury)	2.1
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	1.9
Nickel	Metals (other than Mercury)	1.1
Mercury	Mercury	.7
Antimony	Toxic Inorganics	.7

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Site-specific Targeted Monitoring Results

Probable Sources
Alaska Rivers and Streams 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Placer Mining	Resource Extraction	298.5
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	90.6
Highways, Roads, Bridges, Infrastructure (New Construction)	Construction	20.0
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	14.9
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	13.0
Post-Development Erosion And Sedimentation	Hydromodification	13.0
Unspecified Domestic Waste	Municipal Discharges/Sewage	11.0
Silviculture Harvesting	Silviculture (Forestry)	8.5
Municipal Point Source Discharges	Municipal Discharges/Sewage	8.0
Site Clearance (Land Development Or Redevelopment)	Construction	7.0
Inappropriate Waste Disposal	Spills/Dumping	7.0
Forest Roads (Road Construction And Use)	Silviculture (Forestry)	6.9
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	5.3
Subsurface (Hardrock) Mining	Resource Extraction	4.9
Contaminated Sediments	Legacy/Historical Pollutants	4.5
Nps Pollution From Military Port Facilities	Military Bases	4.5
Silviculture Activities	Silviculture (Forestry)	4.5
Rcra Hazardous Waste Sites	Industrial	4.5
Landfills	Land Application/Waste Sites/Tanks	4.5
Mine Tailings	Resource Extraction	3.7
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	2.5
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	2.0
Surface Mining	Resource Extraction	1.0
Other Spill Related Impacts	Spills/Dumping	.3

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Site-specific Targeted Monitoring Results

Alaska Lakes, Reservoirs, and Ponds 2010

Description of this table Assessed Status Acres Assessed 5,981.1 Unassessed 12,781,218.9 Total Acres 12,787,200.0

Description of this table Attainment Status Acres Good 3,427.0 Threatened .0 Impaired 2,554.1 Total Acres Assessed 5,981.1

Description of this table TMDL Development Status Acres All TMDLs completed 2,245.0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 309.1 Total Threatened and Impaired 2,554.1

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Alaska 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
Fresh Water / Growth And Propagation Of Fish, Shellfish, Other Aquatic Life And Wildlife	2,557.1	5.0	.0	95.0
Fresh Water / Water Recreation / Contact Recreation	2,474.1	1.8	.0	98.2
Fresh Water / Water Recreation / Secondary Recreation	2,474.1	1.8	.0	98.2
Fresh Water / Water Supply / Agriculture, Including Irrigation And Stock Watering	2,474.1	1.8	.0	98.2
Fresh Water / Water Supply / Aquaculture	2,474.1	1.8	.0	98.2
Fresh Water / Water Supply / Drinking, Culinary, And Food Processing	5,898.1	56.7	.0	43.3
Fresh Water / Water Supply / Industrial	2,429.1	.0	.0	100.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Alaska Lakes, Reservoirs, and Ponds 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Petroleum Hydrocarbons	Oil and Grease	1,250.1
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	830.0
Dissolved Oxygen Saturation	Organic Enrichment/Oxygen Depletion	307.0
Fecal Coliform	Pathogens	165.0
Manganese	Metals (other than Mercury)	2.0
Iron	Metals (other than Mercury)	2.0

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Site-specific Targeted Monitoring Results

Probable Sources
Alaska Lakes, Reservoirs, and Ponds 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Other Recreational Pollution Sources	Recreation And Tourism (Non-Boating)	1,250.0
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	1,137.0
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	870.0
Airports	Industrial	307.0
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	125.1
Nps Pollution From Military Base Facilities (Other Than Port Facilities)	Military Bases	2.0
Landfills	Land Application/Waste Sites/Tanks	2.0
Other Spill Related Impacts	Spills/Dumping	.1

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Site-specific Targeted Monitoring Results

Alaska Bays and Estuaries 2010

Description of this table Assessed Status Square Miles Assessed 31.4 Unassessed 33,172.6 Total Square Miles 33,204.0

Description of this table Attainment Status Square Miles Good 30.7 Threatened .0 Impaired .7 Total Square Miles Assessed 31.4

Description of this table TMDL Development Status Square Miles All TMDLs completed .7 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed .0 Total Threatened and Impaired .7

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Alaska 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
Fresh Water / Growth And Propagation Of Fish, Shellfish, Other Aquatic Life And Wildlife	4.9	99.4	.0	.6
Fresh Water / Water Recreation / Contact Recreation	.0	.0	.0	100.0
Fresh Water / Water Recreation / Secondary Recreation	.0	.0	.0	100.0
Fresh Water / Water Supply / Agriculture, Including Irrigation And Stock Watering	.0	.0	.0	100.0
Fresh Water / Water Supply / Aquaculture	.0	.0	.0	100.0
Fresh Water / Water Supply / Drinking, Culinary, And Food Processing	.0	.0	.0	100.0
Fresh Water / Water Supply / Industrial	.0	.0	.0	100.0
Marine Water / Growth And Propagation Of Fish, Shellfish, Other Aquatic Life And Wildlife	26.4	97.5	.0	2.5
Marine Water / Harvesting For Consumption Of Raw Mollusks Or Other Raw Aquatic Life	6.3	89.4	.0	10.6
Marine Water / Water Recreation / Contact Recreation	6.4	89.6	.0	10.4
Marine Water / Water Recreation / Secondary Recreation	6.3	89.4	.0	10.6
Marine Water / Water Supply / Aquaculture	6.3	89.4	.0	10.6
Marine Water / Water Supply / Industrial	.7	.3	.0	99.7
Marine Water / Water Supply / Seafood Processing	6.4	89.6	.0	10.4

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Site-specific Targeted Monitoring Results

Causes of Impairment
Alaska Bays and Estuaries 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Debris/Floatables/Trash	Trash	.6
Ammonia, Total	Ammonia	.3
4-Methylphenol	Toxic Organics	.3
Sulfide-Hydrogen Sulfide	Toxic Inorganics	.3
Biochemical Oxygen Demand (BOD)	Organic Enrichment/Oxygen Depletion	.1
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	.1
Copper	Metals (other than Mercury)	.0
Bottom Deposits	Sediment	.0
Mercury	Mercury	.0
Lead	Metals (other than Mercury)	.0
Zinc	Metals (other than Mercury)	.0
Petroleum Hydrocarbons	Oil and Grease	.0
Cobalt	Metals (other than Mercury)	.0
Silver	Metals (other than Mercury)	.0
Arsenic	Metals (other than Mercury)	.0
Manganese	Metals (other than Mercury)	.0
Cadmium	Metals (other than Mercury)	.0

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Site-specific Targeted Monitoring Results

Probable Sources
Alaska Bays and Estuaries 2010

Description of this table

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Industrial Point Source Discharge	Industrial	.5
Silviculture Activities	Silviculture (Forestry)	.2
Silviculture Harvesting	Silviculture (Forestry)	.2
Seafood Processing Operations	Aquaculture	.2
Mine Tailings	Resource Extraction	.0
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	.0
Historic Bottom Deposits (Not Sediment)	Legacy/Historical Pollutants	.0
Illegal Dumps Or Other Inappropriate Waste Disposal	Spills/Dumping	.0
Other Spill Related Impacts	Spills/Dumping	.0
Other Shipping Releases (Wastes And Detritus)	Commercial Harbor And Port Activities	.0

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Site-specific Targeted Monitoring Results

Alaska Coastal Shoreline 2010

Description of this table Assessed Status Miles Assessed 17.6 Unassessed 35,982.5 Total Miles 36,000.0

Description of this table Attainment Status Miles Good .0 Threatened .0 Impaired 17.6 Total Miles Assessed 17.6

Description of this table TMDL Development Status Miles All TMDLs completed .0 TMDL alternative 12.6 Non-pollutant impairment .0 TMDL needed 5.0 Total Threatened and Impaired 17.6

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Alaska 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
Marine Water / Growth And Propagation Of Fish, Shellfish, Other Aquatic Life And Wildlife	5.0	.0	.0	100.0
Marine Water / Harvesting For Consumption Of Raw Mollusks Or Other Raw Aquatic Life	5.0	.0	.0	100.0
Marine Water / Water Recreation / Contact Recreation	5.0	.0	.0	100.0
Marine Water / Water Recreation / Secondary Recreation	5.0	.0	.0	100.0
Marine Water / Water Supply / Aquaculture	17.6	.0	.0	100.0
Marine Water / Water Supply / Industrial	5.0	.0	.0	100.0
Marine Water / Water Supply / Seafood Processing	5.0	.0	.0	100.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Alaska Coastal Shoreline 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Petroleum Hydrocarbons	Oil and Grease	12.6
Bottom Deposits	Sediment	5.0

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Site-specific Targeted Monitoring Results

Probable Sources
Alaska Coastal Shoreline 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Other Spill Related Impacts	Spills/Dumping	12.6
Seafood Processing Operations	Aquaculture	5.0
Industrial Point Source Discharge	Industrial	5.0

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Alaska 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)
Ammonia	8.0		.3
Chlorine	8.0
Mercury	.7		.0
Metals (other than Mercury)	18.8	2.0	.0
Oil and Grease	18.3	1,250.1	.0	12.6
Organic Enrichment/Oxygen Depletion	7.0	1,137.0	.1
Pathogens	67.3	165.0
Polychlorinated Biphenyls (PCBs)	4.5
Salinity/Total Dissolved Solids/Chlorides/Sulfates	1.9
Sediment	55.0		.0	5.0
Toxic Inorganics	.7		.3
Toxic Organics			.3
Trash	16.0		.6
Turbidity	318.0

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Alaska 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)
Aquaculture			.2	5.0
Commercial Harbor And Port Activities			.0
Construction	20.0
Hydromodification	26.0
Industrial	4.5	307.0	.5	5.0
Land Application/Waste Sites/Tanks	4.5	2.0
Legacy/Historical Pollutants	4.5		.0
Military Bases	4.5	2.0
Municipal Discharges/Sewage	21.0
Recreation And Tourism (Non-Boating)		1,250.0
Resource Extraction	305.9		.0
Silviculture (Forestry)	11.4		.2
Spills/Dumping	7.3	.1	.0	12.6
Urban-Related Runoff/Stormwater	110.8	1,302.1	.0

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Alaska 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	Rivers and Streams (Miles)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)
Petroleum Hydrocarbons	22			13
Arsenic	1	2
Cadmium	1	2
Copper	1	2
Debris/Floatables/Trash	1		0
Iron	1	2
Manganese	1	2
Sedimentation/Siltation	1	4

Total: 29 TMDL Alternatives

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Alaska 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
2006	2	2
2008	7	7
2010	2	3

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Alaska 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
Metals (other than Mercury)	36
Turbidity	11
Oil and Grease	8
Sediment	5
Mercury	3
Salinity/Total Dissolved Solids/Chlorides/Sulfates	2
Toxic Inorganics	2
Pathogens	1
Organic Enrichment/Oxygen Depletion	1
Other Cause	1
Trash	1

Total: 71 Causes of Impairment

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Alaska 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
Fecal Coliform	15	15
Residues	6	6
Dissolved Oxygen	3	3
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems)	3	3
Turbidity	3	3
Debris	2	2
Seafood Residue	2	2
Sediment	2	3
Arsenic	1	1
Cobalt	1	1
Contaminated Sediments (Cadmium)	1	1
Contaminated Sediments (Copper)	1	1
Contaminated Sediments (Lead)	1	1
Contaminated Sediments (Zinc)	1	1
Copper	1	1
Iron	1	1
Lead	1	1
Manganese	1	1
Mercury	1	1
Oil and Grease	1	1
Polychlorinated Biphenyls (PCBs)	1	1
Silver	1	1
Total Aromatic Hydrocarbons	1	1
Toxic & Other Deleterious Substances	1	1
Zinc	1	1

Total: 53 TMDLs; 54 Causes of Impairment Addressed

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Alaska 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
1996	1	1
1997	3	3
1999	2	2
2000	4	4
2001	1	1
2002	5	5
2003	2	2
2004	6	6
2005	4	4
2006	2	2
2007	3	3
2008	2	2
2009	8	8
2010	7	8
2011	1	1
2012	2	2

Total: 53 TMDLs; 54 Causes of Impairment Addressed

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TMDL Document Search

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