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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:
North Carolina Impaired Waters and TMDL Information
Assessed Waters of North Carolina by Watershed
Search for a waterbody within North Carolina
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North Carolina 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 |
|---|---|---|
| 2007 |  54 |
58 |
| 2010 | 64 |
70 |
North Carolina 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 |
|---|---|
| Pathogens |  341 |
| Cause Unknown | 147 |
| Sediment | 78 |
| Turbidity | 47 |
| Mercury | 31 |
| Organic Enrichment/Oxygen Depletion | 28 |
| Habitat Alterations | 21 |
| Metals (other than Mercury) | 9 |
| pH/Acidity/Caustic Conditions | 8 |
| Algal Growth | 7 |
| Noxious Aquatic Plants | 7 |
| Dioxins | 5 |
| Nutrients | 5 |
| Total Toxics | 2 |
| Pesticides | 1 |
| Chlorine | 1 |
Total: 738 Causes of Impairment
North Carolina 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 |  110 |
111 |
| Mercury | 36 |
36 |
| Fecal | 15 |
15 |
| Phosphorus, Total | 11 |
11 |
| Nitrogen, Total | 10 |
10 |
| Total Suspended Solids (TSS) | 10 |
16 |
| Aquatic Weeds | 5 |
5 |
| Dioxin | 5 |
5 |
| Turbidity | 5 |
5 |
| Biological Integrity | 4 |
4 |
| Pollutants in Urban Stormwater | 3 |
3 |
| Alkalinity | 2 |
2 |
| Nitrogen | 2 |
2 |
| Copper | 1 |
1 |
| Dissolved Oxygen | 1 |
1 |
Total: 220 TMDLs; 228 Causes of Impairment Addressed
North Carolina 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 | 5 |
5 |
| 1999 | 2 |
2 |
| 2000 | 35 |
35 |
| 2002 | 15 |
16 |
| 2003 | 7 |
7 |
| 2004 | 16 |
16 |
| 2005 | 12 |
12 |
| 2006 | 7 |
7 |
| 2007 | 24 |
24 |
| 2008 | 1 |
1 |
| 2009 | 20 |
20 |
| 2010 | 32 |
32 |
| 2011 | 21 |
28 |
| 2012 | 21 |
21 |
| 2013 | 1 |
1 |
Total: 220 TMDLs; 228 Causes of Impairment Addressed