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Alaska Assessment Summary for Reporting Year 2008

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	115.3	3,382.0	25.1
Previously impaired waters       now attaining all uses
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	475.4	4,656.1	.8	17.6
TMDL completed	129.3	1,247.0	.6
TMDL alternative	25.2		.0	12.6
Non-pollutant impairment
TMDL needed	320.9	3,409.1	.1	5.0
New TMDLs completed	3.0	.0	.0	.0
Remaining TMDLs needed	317.9	3,409.1	.1	5.0
Total Assessed Waters	590.7	8,038.1	25.9	17.6
Total Waters	365,000.0	12,787,200.0	33,204.0	36,000.0
Percent of Waters Assessed	.2	.1	.1	.0

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

Alaska Assessed Waters
Summary of Water Quality Attainment for Rivers and Streams
Reporting Year 2008

Description of this table Assessed Status Miles Assessed 590.7 Unassessed 364,409.4 Total Miles 365,000.0

Description of this table Attainment Status Miles Good 115.3 Threatened .0 Impaired 475.4 Total Miles Assessed 590.7

Description of this table TMDL Development Status Miles All TMDLs completed 132.3 TMDL alternative 25.2 Non-pollutant impairment .0 TMDL needed 317.9 Total Threatened and Impaired 475.4

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Alaska Assessed Waters
Designated Use Support for Rivers and Streams
Reporting Year 2008*

* 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	436.0	5.6	.0	94.4
Fresh Water; Water Recreation; Contact Recreation	388.7	.0	.0	100.0
Fresh Water; Water Recreation; Secondary Recreation	388.7	.0	.0	100.0
Fresh Water; Water Supply; Agriculture, Including Irrigation And Stock Watering	388.7	.0	.0	100.0
Fresh Water; Water Supply; Aquaculture	388.7	.0	.0	100.0
Fresh Water; Water Supply; Drinking, Culinary, And Food Processing	557.2	16.1	.0	83.9
Fresh Water; Water Supply; Industrial	388.7	.0	.0	100.0
Marine Water; Water Supply; Aquaculture	1.0	100.0	.0	.0

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Alaska Causes of Impairment
for Threatened and Impaired Rivers and Streams
Reporting Year 2008

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Turbidity	Turbidity	296.6
Petroleum Hydrocarbons	Oil and Grease	65.3
Sedimentation/Siltation	Sediment	61.5
Fecal Coliform	Pathogens	60.3
Ammonia, Un-ionized	Ammonia	40.0
Residues	Other Cause	20.0
Debris/Floatables/Trash	Trash	7.5
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	7.0
Iron	Metals (other than Mercury)	6.2
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	4.5
Cadmium	Metals (other than Mercury)	2.2
Manganese	Metals (other than Mercury)	2.2
Arsenic	Metals (other than Mercury)	2.2
Copper	Metals (other than Mercury)	2.2
Lead	Metals (other than Mercury)	1.0
Zinc	Metals (other than Mercury)	1.0
Barium	Radiation	1.0

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Alaska Probable Sources of Impairments
for Threatened and Impaired Rivers and Streams
Reporting Year 2008

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Placer Mining	Resource Extraction	270.6
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	95.9
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	53.0
Municipal Point Source Discharges	Municipal Dishcarges/Sewage	40.0
Unspecified Domestic Waste	Municipal Dishcarges/Sewage	26.0
Highways, Roads, Bridges, Infrastructure (New Construction)	Construction	20.0
Site Clearance (Land Development Or Redevelopment)	Construction	20.0
Other Recreational Pollution Sources	Recreation And Tourism (Non-Boating)	19.0
Silviculture Harvesting	Silviculture (Forestry)	16.5
Other Spill Related Impacts	Spills/Dumping	15.3
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	13.0
Drainage/Filling/Loss Of Wetlands	Habitat Alterations (Not Directly Related To Hydromodification)	13.0
Post-Development Erosion And Sedimentation	Hydromodification	13.0
Streambank Modifications/Destabilization	Hydromodification	13.0
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Dishcarges/Sewage	7.3
Inappropriate Waste Disposal	Spills/Dumping	7.0
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	6.4
Subsurface (Hardrock) Mining	Resource Extraction	4.7
Silviculture Activities	Silviculture (Forestry)	4.5
Rcra Hazardous Waste Sites	Industrial	4.5
Landfills	Land Application/Waste Sites/Tanks	4.5
Contaminated Sediments	Legacy/Historical Pollutants	4.5
Nps Pollution From Military Port Facilities	Military Bases	4.5
Forest Roads (Road Construction And Use)	Silviculture (Forestry)	4.0
Mine Tailings	Resource Extraction	3.2
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	2.5
Surface Mining	Resource Extraction	1.0

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Alaska Assessed Waters
Summary of Water Quality Attainment for Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table Assessed Status Acres Assessed 8,038.1 Unassessed 12,779,161.9 Total Acres 12,787,200.0

Description of this table Attainment Status Acres Good 3,382.0 Threatened .0 Impaired 4,656.1 Total Acres Assessed 8,038.1

Description of this table TMDL Development Status Acres All TMDLs completed 1,247.0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 3,409.1 Total Threatened and Impaired 4,656.1

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Alaska Assessed Waters
Designated Use Support for Lakes, Reservoirs, and Ponds
Reporting Year 2008*

* 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	4,669.1	1.8	.0	98.2
Fresh Water; Water Recreation; Contact Recreation	3,756.1	.0	.0	100.0
Fresh Water; Water Recreation; Secondary Recreation	3,756.1	.0	.0	100.0
Fresh Water; Water Supply; Agriculture, Including Irrigation And Stock Watering	3,756.1	.0	.0	100.0
Fresh Water; Water Supply; Aquaculture	4,586.1	.0	.0	100.0
Fresh Water; Water Supply; Drinking, Culinary, And Food Processing	7,125.1	46.3	.0	53.7
Fresh Water; Water Supply; Industrial	3,756.1	.0	.0	100.0

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Alaska Causes of Impairment
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Petroleum Hydrocarbons	Oil and Grease	3,100.1
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	1,137.0
Fecal Coliform	Pathogens	417.0
Manganese	Metals (other than Mercury)	2.0
Iron	Metals (other than Mercury)	2.0

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Alaska Probable Sources of Impairments
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Other Recreational Pollution Sources	Recreation And Tourism (Non-Boating)	3,100.0
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Dishcarges/Sewage	830.0
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	417.1
Unspecified Domestic Waste	Municipal Dishcarges/Sewage	307.0
Landfills	Land Application/Waste Sites/Tanks	2.0
Nps Pollution From Military Port Facilities	Military Bases	2.0
Other Spill Related Impacts	Spills/Dumping	.1

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Alaska Assessed Waters
Summary of Water Quality Attainment for Bays and Estuaries
Reporting Year 2008

Description of this table Assessed Status Square Miles Assessed 25.9 Unassessed 33,178.1 Total Square Miles 33,204.0

Description of this table Attainment Status Square Miles Good 25.1 Threatened .0 Impaired .8 Total Square Miles Assessed 25.9

Description of this table TMDL Development Status Square Miles All TMDLs completed .6 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed .1 Total Threatened and Impaired .8

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Alaska Assessed Waters
Designated Use Support for Bays and Estuaries
Reporting Year 2008*

* 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	100.0	.0	.0
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	20.9	96.4	.0	3.6
Marine Water; Harvesting For Consumption Of Raw Mollusks Or Other Raw Aquatic Life	.7	.3	.0	99.7
Marine Water; Water Recreation; Contact Recreation	.8	12.1	.0	87.9
Marine Water; Water Recreation; Secondary Recreation	.7	.3	.0	99.7
Marine Water; Water Supply; Aquaculture	.8	.3	.0	99.7
Marine Water; Water Supply; Industrial	.7	.3	.0	99.7
Marine Water; Water Supply; Seafood Processing	.8	12.0	.0	88.0

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Alaska Causes of Impairment
for Threatened and Impaired Bays and Estuaries
Reporting Year 2008

Description of this table

Cause of Impairment	Cause of Impairment Group	Square Miles Threatened or Impaired
Debris/Floatables/Trash	Trash	.5
Sulfide-Hydrogen Sulfide	Toxic Inorganics	.5
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	.3
Residues	Other Cause	.2
Ammonia, Total	Ammonia	.1
Biochemical Oxygen Demand (BOD)	Organic Enrichment/Oxygen Depletion	.1
4-Methylphenol	Toxic Organics	.1
Organic Enrichment (Sewage) Biological Indicators	Organic Enrichment/Oxygen Depletion	.0
Copper	Metals (other than Mercury)	.0
Mercury	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
Iron	Metals (other than Mercury)	.0
Lead	Metals (other than Mercury)	.0
Cadmium	Metals (other than Mercury)	.0
Zinc	Metals (other than Mercury)	.0

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Alaska Probable Sources of Impairments
for Threatened and Impaired Bays and Estuaries
Reporting Year 2008

Description of this table

Probable Source	Probable Source Group	Square Miles Threatened or Impaired
Industrial Point Source Discharge	Industrial	.3
Seafood Processing Operations	Aquaculture	.1
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	.0
Historic Bottom Deposits (Not Sediment)	Legacy/Historical Pollutants	.0
Silviculture Activities	Silviculture (Forestry)	.0
Mine Tailings	Resource Extraction	.0

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Alaska Assessed Waters
Summary of Water Quality Attainment for Coastal Shoreline
Reporting Year 2008

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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Alaska Assessed Waters
Designated Use Support for Coastal Shoreline
Reporting Year 2008*

* 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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Alaska Causes of Impairment
for Threatened and Impaired Coastal Shoreline
Reporting Year 2008

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Petroleum Hydrocarbons	Oil and Grease	12.6
Residues	Other Cause	5.0

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Alaska Probable Sources of Impairments
for Threatened and Impaired Coastal Shoreline
Reporting Year 2008

Description of this table

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

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Alaska 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.
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	40.0		.1
Mercury			.0
Metals (other than Mercury)	7.2	2.0	.0
Oil and Grease	65.3	3,100.1	.0	12.6
Organic Enrichment/Oxygen Depletion	7.0	1,137.0	.3
Other Cause	20.0		.2	5.0
Pathogens	60.3	417.0
Polychlorinated Biphenyls (PCBs)	4.5
Radiation	1.0
Sediment	61.5
Toxic Inorganics			.5
Toxic Organics			.1
Trash	7.5		.5
Turbidity	296.6

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Alaska 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.
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			.1
Construction	33.0
Habitat Alterations (Not Directly Related To Hydromodification)	13.0
Hydromodification	39.0
Industrial	4.5		.3	5.0
Land Application/Waste Sites/Tanks	4.5	2.0
Legacy/Historical Pollutants	4.5		.0
Military Bases	4.5	2.0
Municipal Dishcarges/Sewage	73.3	1,137.0
Recreation And Tourism (Non-Boating)	19.0	3,100.0
Resource Extraction	277.3		.0
Silviculture (Forestry)	16.5		.0
Spills/Dumping	22.3	.1		12.6
Urban-Related Runoff/Stormwater	155.3	417.1	.0

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Alaska 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.
Cause of Impairment	Number of TMDL Alternatives	Rivers and Streams (Miles)	Bays and Estuaries (Square Miles)	Coastal Shoreline (Miles)
Petroleum Hydrocarbons	23	19		13
4-Methylphenol	1		0
Ammonia, Total	1		0
Arsenic	1	2
Cadmium	1	2
Copper	1	2
Iron	1	2
Manganese	1	2
Residues	1		0
Sedimentation/Siltation	1	4
Sulfide-Hydrogen Sulfide	1		0

Total: 33 TMDL Alternatives

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Alaska Previously Impaired Waters Now Attaining All Uses

Description of this table

NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those waters now attaining all uses.
Cycle Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
2006	2	2

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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
Turbidity	13
Oil and Grease	10
Sediment	6
Metals (other than Mercury)	4
Other Cause	3
Organic Enrichment/Oxygen Depletion	2
Total Toxics	1
Radiation	1
Trash	1

Total: 41 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
Turbidity	3	3
Debris	2	2
Seafood Residue	2	2
Sediment	2	3
Arsenic	1	1
Cobalt	1	1
Copper	1	1
Iron	1	1
Lead	1	1
Manganese	1	1
Mercury	1	1
Polychlorinated Biphenyls (PCBs)	1	1
Silver	1	1
Toxic & Other Deleterious Substances	1	1
Zinc	1	1

Total: 44 TMDLs; 45 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	1	2

Total: 44 TMDLs; 45 Causes of Impairment Addressed

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