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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
2004
2006
2008
2010
2012
Waterbody Changes from Prior Cycle
For More Information:
Wyoming Impaired Waters and TMDL Information
Assessed Waters of Wyoming by Watershed
Search for a waterbody within Wyoming
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Wyoming 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 |
|---|---|---|
| 2012 |  2 |
2 |
Wyoming 2000 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 |  33 |
| Habitat Alterations | 21 |
| Metals (other than Mercury) | 19 |
| Chlorine | 13 |
| Ammonia | 9 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 4 |
| Oil and Grease | 3 |
| Nutrients | 3 |
| Sediment | 2 |
| Temperature | 1 |
| pH/Acidity/Caustic Conditions | 1 |
Total: 109 Causes of Impairment
Wyoming 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 |  82 |
84 |
| Total Residual Chlorine | 49 |
52 |
| Chlorine | 48 |
48 |
| Ammonia, Un-ionized | 47 |
48 |
| Ammonia | 32 |
34 |
| Chlorine, Residual (Chlorine Demand) | 13 |
13 |
| Escherichia Coli (E. Coli) | 12 |
12 |
| Fecal | 12 |
12 |
| Radium 226 | 8 |
11 |
| Chlorides | 7 |
7 |
| Iron | 5 |
5 |
| Copper | 4 |
4 |
| Radium | 4 |
4 |
| Arsenic | 3 |
3 |
| Chloride | 3 |
5 |
| Sediment | 3 |
3 |
| Zinc | 3 |
3 |
| Manganese | 2 |
2 |
| Pentachlorophenol (PCP) | 2 |
2 |
| Phenols | 2 |
2 |
| Selenium | 2 |
2 |
| Temperature | 2 |
2 |
| Cadmium | 1 |
1 |
| Chromium IV | 1 |
1 |
| Chromium, Total | 1 |
1 |
| Nitrate | 1 |
1 |
| Nitrates | 1 |
1 |
| Silver | 1 |
1 |
| Sulfide | 1 |
1 |
| Total Dissolved Solids (TDS) | 1 |
1 |
Total: 353 TMDLs; 366 Causes of Impairment Addressed
Wyoming 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 |
|---|---|---|
| 1997 | 83 |
84 |
| 1998 | 9 |
9 |
| 1999 | 41 |
41 |
| 2000 | 12 |
12 |
| 2001 | 10 |
10 |
| 2002 | 13 |
13 |
| 2003 | 11 |
11 |
| 2004 | 71 |
75 |
| 2005 | 39 |
39 |
| 2006 | 16 |
16 |
| 2007 | 30 |
38 |
| 2010 | 14 |
14 |
| 2011 | 4 |
4 |
Total: 353 TMDLs; 366 Causes of Impairment Addressed