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- Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards
- Causes of Impairment for 303(d) Listed Waters
- Cumulative TMDLs by Pollutant
- Cumulative Number of TMDLs
Data are also available for these cycles:
2002
2006
2008
2010
Waterbody Changes from Prior Cycle
For More Information:
Alaska Impaired Waters and TMDL Information
Assessed Waters of Alaska by Watershed
Search for a waterbody within Alaska
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- Pollution Categories Summary Document
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 |
Alaska 2004 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 |
|---|---|
| Other Cause |  12 |
| Oil and Grease | 10 |
| Sediment | 6 |
| Turbidity | 6 |
| Total Toxics | 5 |
| Pathogens | 4 |
Total: 43 Causes of Impairment
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
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