![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Return to home page
On This Page
On This Page
- Oregon Assessment Summary
- Water Quality by Waterbody Type
- Causes of Impairment
- Probable Sources Contributing to Impairments
- Previously Impaired Waters Now Attaining All Uses
- TMDL Alternatives by Cause of Impairment
- Causes of Impairment for 303(d) Listed Waters
- Cumulative TMDLs by Pollutant
- Cumulative Number of TMDLs
- TMDLs for Indian Country Waters by Fiscal Year
Data are also available for these years: 2002 2004
Waterbody Changes from Prior Cycle
Comparison Summary by Reporting Year
For More Information:
Oregon Assessment Report
State Water Quality Program
Oregon 2006 Water Quality Assessment Report
Assessed Waters of Oregon by Watershed
Search for a Waterbody within Oregon
NOTE: The data provided in this report differs from the information provided in Oregon's 2004/2006 Integrated Report, which is available at http://www.deq.state.or.us/wq/assessment/rpt0406.htm. This is a result of differences between the data format of Oregon's state assessment database and the protocols used to summarize data for this report. While Oregon assessed some Bays, the data was not available in square miles, and is not included in this report. For more details concerning the assessment of Bays, please see Oregons 2004/2006 Integrated Report.
NOTE: The data provided in this report differs from the information provided in Oregon's 2004/2006 Integrated Report, which is available at http://www.deq.state.or.us/wq/assessment/rpt0406.htm. This is a result of differences between the data format of Oregon's state assessment database and the protocols used to summarize data for this report. While Oregon assessed some Bays, the data was not available in square miles, and is not included in this report. For more details concerning the assessment of Bays, please see Oregons 2004/2006 Integrated Report.
Oregon Assessment Summary for Reporting Year 2006
Description of this table| Size of Water | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rivers and Streams (Miles) |
Lakes, Reservoirs, and Ponds (Acres) |
Coastal Shoreline (Miles) |
|||||||||||||
| Good Waters | 14,976.1 | 4,539.0 | 1.0 | ||||||||||||
| Previously impaired waters now attaining all uses |
|||||||||||||||
| Threatened Waters | |||||||||||||||
| TMDL completed | |||||||||||||||
| TMDL alternative | |||||||||||||||
| Non-pollutant impairment | |||||||||||||||
| TMDL needed | |||||||||||||||
| Impaired Waters | 31,059.6 | 133,818.9 | 4.0 | ||||||||||||
| TMDL completed | |||||||||||||||
| TMDL alternative | |||||||||||||||
| Non-pollutant impairment | |||||||||||||||
| TMDL needed | 18,803.9 | 2,473.2 | |||||||||||||
| New TMDLs completed | 3,585.8 | .0 | .0 | ||||||||||||
| Remaining TMDLs needed | 15,218.1 | 2,473.2 | |||||||||||||
 |
|||||||||||||||
| Total Assessed Waters | 46,035.7 | 138,357.9 | 5.0 | ||||||||||||
| Total Waters | 114,823.0 | 618,934.0 | Unavailable | ||||||||||||
| Percent of Waters Assessed | 40.1 | 22.4 | Unavailable | ||||||||||||
Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2006
Oregon Assessed Waters
Summary of Water Quality Attainment for Rivers and Streams
Reporting Year 2006
Description of this table
|
|
Description of this table
|
|
Description of this table
|
||||||||||||||||||||||||||||||||||||
Oregon Assessed Waters
Designated Use Support for Rivers and Streams
Reporting Year 2006*
* 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 |
|||||
| Aesthetic Quality | 3,653.6 | 69.5 | .0 | 30.5 | |
| Anadromous Fish Passage | 11,760.4 | 42.6 | .0 | 57.4 | |
| Aquatic Life | 11,329.3 | 86.5 | .0 | 13.5 | |
| Bull Trout Spawning And Juvenile Rearing | 730.5 | 34.3 | .0 | 65.7 | |
| Cold-Water Aquatic Life | 2,379.9 | 79.5 | .0 | 20.5 | |
| Cool-Water Aquatic Life | 3,264.5 | 82.5 | .0 | 17.5 | |
| Core Cold Water Habitat | 2,445.6 | 15.4 | .0 | 84.6 | |
| Drinking Water | 683.3 | 23.3 | .0 | 76.7 | |
| Estuarine Water | 170.6 | 93.1 | .0 | 6.9 | |
| Fishing | 73.1 | 1.5 | .0 | 98.5 | |
| Human Health | 1,220.4 | 57.5 | .0 | 42.5 | |
| Livestock Watering | 1.3 | .0 | .0 | 100.0 | |
| Redband Or Lahontan Cutthroat Trout | 1,614.4 | 16.8 | .0 | 83.2 | |
| Resident Fish And Aquatic Life | 18,966.9 | 13.2 | .0 | 86.8 | |
| Resident Trout Spawning | 1,121.2 | 44.4 | .0 | 55.6 | |
| Salmon And Steelhead Migration Corridor | 538.3 | .0 | .0 | 100.0 | |
| Salmon And Steelhead Spawning | 2,859.2 | 44.4 | .0 | 55.6 | |
| Salmon And Trout Rearing And Migration | 5,146.7 | 14.5 | .0 | 85.5 | |
| Salmonid Fish Rearing | 1,652.3 | 3.3 | .0 | 96.7 | |
| Salmonid Fish Spawning | 1,923.1 | 2.1 | .0 | 97.9 | |
| Shellfish Growing | 679.2 | 4.4 | .0 | 95.6 | |
| Water Contact Recreation | 7,251.1 | 59.8 | .0 | 40.2 | |
Oregon Causes of Impairment
for Threatened and Impaired Rivers and Streams
Reporting Year 2006
Description of this table
| Cause of Impairment | Cause of Impairment Group | Miles Threatened or Impaired |
|---|---|---|
| Temperature, Water | Temperature | 17,253.1 |
| Sedimentation/Siltation | Sediment | 11,996.5 |
| Nutrients | Nutrients | 11,272.7 |
| Nutrients - Eutrophication | Nutrients | 10,507.6 |
| pH | pH/Acidity/Caustic Conditions | 5,370.3 |
| Dissolved Oxygen | Organic Enrichment/Oxygen Depletion | 4,261.4 |
| Fecal Coliform | Pathogens | 2,687.4 |
| Escherichia Coli (E. Coli) | Pathogens | 2,358.7 |
| Iron | Metals (other than Mercury) | 1,359.6 |
| Ammonia, Total | Ammonia | 998.4 |
| Copper | Metals (other than Mercury) | 949.5 |
| Chlorophyll-A | Algal Growth | 942.8 |
| Mercury | Mercury | 882.3 |
| Chromium, Hexavalent | Metals (other than Mercury) | 862.7 |
| Nickel | Metals (other than Mercury) | 854.1 |
| Manganese | Metals (other than Mercury) | 839.1 |
| Alkalinity, Carbonate as CaCO3 | pH/Acidity/Caustic Conditions | 772.2 |
| Zinc | Metals (other than Mercury) | 768.8 |
| Phosphorus, Elemental | Nutrients | 768.1 |
| Lead | Metals (other than Mercury) | 724.4 |
| Phosphate | Nutrients | 701.9 |
| Priority Organics Compounds | Toxic Organics | 694.4 |
| Metals | Metals (other than Mercury) | 680.0 |
| Habitat Alterations (Other Than Flow) | Habitat Alterations | 670.7 |
| 2,3,7,8-Tetrachlorodibenzofuran | Dioxins | 667.9 |
| Organic Enrichment/Low Dissolved Oxygen | Organic Enrichment/Oxygen Depletion | 650.7 |
| Cadmium | Metals (other than Mercury) | 646.5 |
| Chloride | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 611.2 |
| Arsenic | Metals (other than Mercury) | 584.4 |
| Silver | Metals (other than Mercury) | 539.6 |
| Dieldrin | Pesticides | 502.6 |
| Antimony | Toxic Inorganics | 486.4 |
| Trivalent Arsenic (Arsenic III) | Metals (other than Mercury) | 470.5 |
| DDT | Pesticides | 411.4 |
| Selenium | Metals (other than Mercury) | 406.0 |
| Atrazine | Pesticides | 405.5 |
| Simazine | Pesticides | 374.2 |
| Lindane | Pesticides | 353.9 |
| Acidity pH < 6.5 or pH > 8.5 | pH/Acidity/Caustic Conditions | 330.4 |
| Polychlorinated Biphenyls (PCBs) | Polychlorinated Biphenyls (PCBs) | 328.3 |
| DDE | Pesticides | 326.3 |
| Malathion | Pesticides | 281.2 |
| Chlorpyrifos | Pesticides | 266.0 |
| Pyrene | Toxic Organics | 252.0 |
| Beryllium | Metals (other than Mercury) | 249.2 |
| Aquatic Algae | Algal Growth | 243.1 |
| Thallium | Metals (other than Mercury) | 241.4 |
| Barium | Radiation | 241.4 |
| Diethyl Phthalate | Toxic Organics | 240.8 |
| Aldrin | Pesticides | 240.5 |
| Flow Disruption, Groundwater Mining, Inadequate Hydrology | Flow Alteration(s) | 238.6 |
| Chrysene | Toxic Organics | 230.3 |
| EPTC | Pesticides | 227.5 |
| Endrin | Pesticides | 225.3 |
| Other Pollutants/Loss of Cover, Predatio | Other Cause | 224.6 |
| Benzo[a]anthracene | Toxic Organics | 220.5 |
| Phenol | Toxic Organics | 213.2 |
| Benzo[g,h,i]perylene | Toxic Organics | 195.7 |
| Turbidity | Turbidity | 173.8 |
| Metals (other than Mercury) | Metals (other than Mercury) | 167.3 |
| Alpha-BHC | Pesticides | 164.6 |
| Prometon (Prometone) | Pesticides | 150.1 |
| Fluoranthene | Toxic Organics | 148.9 |
| Cyanide | Toxic Inorganics | 145.1 |
| Diazinon | Pesticides | 144.9 |
| DDD | Pesticides | 142.0 |
| Salinity/Total Dissolved Solids | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 142.0 |
| Aluminum | Metals (other than Mercury) | 142.0 |
| Tributylin TBT (Tributylstanne) | Toxic Organics | 142.0 |
| Other Pollutants/Encroachment | Habitat Alterations | 130.1 |
| Diuron | Pesticides | 127.3 |
| DEHP (Di-Sec-Octyl Phthalate) | Pesticides | 124.1 |
| Terbacil | Pesticides | 122.8 |
| Parathion | Pesticides | 116.0 |
| Endosulfan | Pesticides | 110.0 |
| Fecal Bacteria | Pathogens | 107.5 |
| Pronamide | Pesticides | 102.7 |
| Trifluralin | Pesticides | 98.8 |
| Pathogens | Pathogens | 90.1 |
| Low Dissolved Oxygen Within The Top 3.0 Meters | Organic Enrichment/Oxygen Depletion | 88.8 |
| Pesticides | Pesticides | 87.0 |
| Dibutyl Phthalate | Pesticides | 86.6 |
| Benzo[a]pyrene (PAHs) | Toxic Organics | 78.5 |
| Chronic High Turbidity/Possible Sedimentation | Turbidity | 78.5 |
| Carbaryl | Pesticides | 78.2 |
| Nutrients - Toxics | Toxic Organics | 70.7 |
| Chlordane | Pesticides | 65.4 |
| Methoxychlor | Pesticides | 65.3 |
| Guthion | Pesticides | 59.4 |
| Chlorine | Chlorine | 55.3 |
| Nitrates | Nutrients | 53.3 |
| Not Applicable | Other Cause | 50.9 |
| Anthracene | Toxic Organics | 48.6 |
| Heptachlor | Pesticides | 45.0 |
| Other Pollutants/Solids, Sludge | Other Cause | 40.5 |
| Tetrachloroethylene | Toxic Organics | 36.5 |
| Biological | Cause Unknown - Impaired Biota | 33.8 |
| 2,4,5-Tp (Silvex) | Pesticides | 32.6 |
| Acenaphthene | Toxic Organics | 32.2 |
| Isophorone | Toxic Organics | 31.1 |
| Toxaphene | Pesticides | 26.5 |
| Pentachlorophenol (PCP) | Toxic Organics | 24.8 |
| Nutrients or Sediments | Nutrients | 24.2 |
| Dinoseb | Pesticides | 24.2 |
| Carbofuran | Pesticides | 23.7 |
| Butyl Benzyl Phthalate | Toxic Organics | 23.7 |
| 1,1,1-Trichloroethane | Toxic Organics | 22.6 |
| Vinyl Chloride | Toxic Organics | 22.6 |
| Acrolein | Pesticides | 22.6 |
| Dimethyl Phthalate | Pesticides | 22.6 |
| 2,4,6-Trichlorophenol | Toxic Organics | 22.6 |
| 1,1,2-Trichloroethane | Toxic Organics | 22.6 |
| Chlorobenzene (Mono) | Toxic Organics | 22.6 |
| Hexachloroethane | Toxic Organics | 22.6 |
| Excessive Aquatic Plants | Noxious Aquatic Plants | 22.6 |
| Other Inorganics | Toxic Inorganics | 22.6 |
| Nitrobenzene | Toxic Organics | 22.6 |
| 2,2'-Dichlorodiethyl Ether | Toxic Organics | 22.6 |
| Hexachlorobenzene | Pesticides | 22.6 |
| 1,1,2,2-Tetrachloroethane | Toxic Organics | 22.6 |
| Trichloroethylene (TCE) | Toxic Organics | 22.6 |
| 1,2,4,5-Tetrachlorobenzene | Toxic Organics | 22.6 |
| 1,2-Dichloroethane | Pesticides | 22.6 |
| 2,4-Dichlorophenol | Toxic Organics | 22.6 |
| 2,2'-Dichlorodiisopropyl Ether | Toxic Organics | 22.6 |
| Chloroform | Toxic Organics | 22.6 |
| Toluene | Toxic Organics | 22.6 |
| Benzene | Toxic Organics | 22.6 |
| Dichlorobenzene (Mixed Isomers) | Toxic Organics | 22.6 |
| Carbon Tetrachloride | Toxic Organics | 22.6 |
| N-Nitrosodiphenylamine | Toxic Organics | 22.6 |
| Unknown Toxicity | Total Toxics | 22.6 |
| 2,4,5-Trichlorophenol | Pesticides | 22.6 |
| Hexachlorocyclopentadiene | Toxic Organics | 22.6 |
| Heavy Metals | Metals (other than Mercury) | 22.6 |
| Beta-BHC | Pesticides | 22.6 |
| 2,4-Dinitrotoluene | Toxic Organics | 22.6 |
| Alachlor | Pesticides | 10.1 |
| Naphthalene | Pesticides | 8.5 |
| Phenanthrene | Toxic Organics | 8.5 |
| Enterococcus Bacteria | Pathogens | 1.3 |
Oregon Probable Sources of Impairments
for Threatened and Impaired Rivers and Streams
Reporting Year 2006
No probable sources of impairments reported.
Oregon Assessed Waters
Summary of Water Quality Attainment for Lakes, Reservoirs, and Ponds
Reporting Year 2006
Description of this table
|
|
Description of this table
|
|
Description of this table
|
||||||||||||||||||||||||||||||||||||
Oregon Assessed Waters
Designated Use Support for Lakes, Reservoirs, and Ponds
Reporting Year 2006*
* 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 |
|||||
| Aesthetic Quality | 92,907.4 | 1.7 | .0 | 98.3 | |
| Anadromous Fish Passage | 97,054.1 | 1.5 | .0 | 98.5 | |
| Aquatic Life | 5,942.3 | 97.8 | .0 | 2.2 | |
| Cold-Water Aquatic Life | 6,427.2 | 53.4 | .0 | 46.6 | |
| Cool-Water Aquatic Life | 2,001.5 | .0 | .0 | 100.0 | |
| Fishing | 212.3 | .0 | .0 | 100.0 | |
| Human Health | 3,436.6 | 100.0 | .0 | .0 | |
| Resident Fish And Aquatic Life | 105,044.1 | 2.1 | .0 | 97.9 | |
| Water Contact Recreation | 9,357.0 | 15.9 | .0 | 84.1 | |
Oregon Causes of Impairment
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2006
Description of this table
| Cause of Impairment | Cause of Impairment Group | Acres Threatened or Impaired |
|---|---|---|
| Dissolved Oxygen | Organic Enrichment/Oxygen Depletion | 83,135.4 |
| Habitat Alterations (Other Than Flow) | Habitat Alterations | 83,072.2 |
| Sedimentation/Siltation | Sediment | 80,691.8 |
| pH | pH/Acidity/Caustic Conditions | 78,785.1 |
| Chlorophyll-A | Algal Growth | 77,902.1 |
| Temperature, Water | Temperature | 68,021.1 |
| Nutrients | Nutrients | 19,112.3 |
| Aquatic Algae | Algal Growth | 19,012.5 |
| Mercury | Mercury | 16,716.6 |
| Nutrients - Eutrophication | Nutrients | 11,686.6 |
| Dieldrin | Pesticides | 10,452.4 |
| Turbidity | Turbidity | 7,870.4 |
| Escherichia Coli (E. Coli) | Pathogens | 7,870.4 |
| Fecal Coliform | Pathogens | 7,870.4 |
| 2,3,7,8-Tetrachlorodibenzofuran | Dioxins | 1,041.1 |
| Metals (other than Mercury) | Metals (other than Mercury) | 829.4 |
| Phosphorus, Elemental | Nutrients | 690.7 |
| Nitrates | Nutrients | 308.3 |
| Copper | Metals (other than Mercury) | 130.1 |
| Zinc | Metals (other than Mercury) | 130.1 |
| Phosphate | Nutrients | 130.1 |
| Alkalinity, Carbonate as CaCO3 | pH/Acidity/Caustic Conditions | 130.1 |
| Lead | Metals (other than Mercury) | 130.1 |
| Iron | Metals (other than Mercury) | 130.1 |
| Cadmium | Metals (other than Mercury) | 130.1 |
| Selenium | Metals (other than Mercury) | 130.1 |
| Chromium, Hexavalent | Metals (other than Mercury) | 130.1 |
| Silver | Metals (other than Mercury) | 130.1 |
| Chloride | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 130.1 |
| Nickel | Metals (other than Mercury) | 130.1 |
| Ammonia, Total | Ammonia | 130.1 |
| Trivalent Arsenic (Arsenic III) | Metals (other than Mercury) | 130.1 |
Oregon Probable Sources of Impairments
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2006
No probable sources of impairments reported.
Oregon Assessed Waters
Summary of Water Quality Attainment for Coastal Shoreline
Reporting Year 2006
Description of this table
|
|
Description of this table
|
|
Description of this table
|
||||||||||||||||||||||||||||||||||||
Oregon Assessed Waters
Designated Use Support for Coastal Shoreline
Reporting Year 2006*
* 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 |
|||||
| Shellfish Growing | 5.0 | 20.0 | .0 | 80.0 | |
Oregon Causes of Impairment
for Threatened and Impaired Coastal Shoreline
Reporting Year 2006
Description of this table
| Cause of Impairment | Cause of Impairment Group | Miles Threatened or Impaired |
|---|---|---|
| Fecal Coliform | Pathogens | 4.0 |
Oregon Probable Sources of Impairments
for Threatened and Impaired Coastal Shoreline
Reporting Year 2006
No probable sources of impairments reported.
Oregon Causes of Impairment for Reporting Year 2006
Description of this table
Oregon Probable Sources Contributing to Impairments
for Reporting Year 2006
No probable sources reported.
Oregon TMDL Alternatives by Cause of Impairment 2006
No TMDL Alternatives reported.
Oregon Previously Impaired Waters Now Attaining All Uses
No previously impaired waters reported as attaining all uses.
Oregon 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 |
|---|---|
| Temperature | 1,029 |
| Pathogens | 196 |
| Metals (other than Mercury) | 155 |
| Organic Enrichment/Oxygen Depletion | 103 |
| Sediment | 60 |
| pH/Acidity/Caustic Conditions | 46 |
| Algal Growth | 35 |
| Pesticides | 33 |
| Mercury | 25 |
| Cause Unknown - Impaired Biota | 21 |
| Toxic Organics | 9 |
| Polychlorinated Biphenyls (PCBs) | 8 |
| Ammonia | 4 |
| Turbidity | 4 |
| Nutrients | 3 |
| Other Cause | 1 |
Total: 1,732 Causes of Impairment
Oregon 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 |
|---|---|---|
| Temperature |  641 |
641 |
| Escherichia Coli (E. Coli) | 103 |
103 |
| Bacteria | 81 |
81 |
| Sedimentation | 39 |
39 |
| Dissolved Oxygen | 35 |
35 |
| pH | 19 |
19 |
| Chlorophyll-A | 11 |
11 |
| Inorganic Phosphorus | 10 |
10 |
| Mercury | 10 |
10 |
| Total Dissolved Gas | 10 |
10 |
| Phosphorus, Total | 7 |
7 |
| Sediment | 7 |
7 |
| Fecal Coliform | 6 |
6 |
| Aquatic Weeds or Algae | 5 |
5 |
| Inorganic Nitrogen | 5 |
5 |
| DDT | 4 |
4 |
| Dieldrin | 4 |
4 |
| Phosphorus | 4 |
4 |
| Turbidity | 4 |
4 |
| Biochemical Oxygen Demand (BOD) | 3 |
3 |
| Nitrate | 3 |
3 |
| Nutrients | 3 |
3 |
| Pesticides | 3 |
6 |
| Ammonia | 2 |
2 |
| DDD | 2 |
2 |
| DDE | 2 |
2 |
| Iron | 2 |
2 |
| Nitrogen, Total | 2 |
2 |
| Nuisance Exotic Species | 2 |
2 |
| Algal Growth/Chlorophyll A | 1 |
1 |
| Ammonia Nitrogen | 1 |
1 |
| Dioxins | 1 |
1 |
| Lead | 1 |
1 |
| Polychlorinated Biphenyls (PCBs) | 1 |
1 |
| Sediment Oxygen Demand | 1 |
1 |
Total: 1,035 TMDLs; 1,038 Causes of Impairment Addressed
Oregon 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 | 5 |
5 |
| 1999 | 11 |
11 |
| 2000 | 73 |
73 |
| 2001 | 190 |
190 |
| 2002 | 67 |
67 |
| 2003 | 49 |
49 |
| 2004 | 41 |
41 |
| 2005 | 21 |
21 |
| 2006 | 207 |
207 |
| 2007 | 192 |
192 |
| 2008 | 32 |
32 |
| 2009 | 147 |
150 |
Total: 1,035 TMDLs; 1,038 Causes of Impairment Addressed
Oregon Cumulative Number of TMDLs for Indian Country Waters
EPA Fiscal Year starts October 1 and ends September 30.
Description of this table
| NOTE:Click on the underlined "Number of TMDLs" value for a detailed list of the TMDLs for the fiscal year. | ||
| Fiscal Year | Number of TMDLs | Number of Causes of Impairment Addressed |
|---|---|---|
| 2005 | 9 |
10 |
Total: 9 TMDLs; 9 Causes of Impairment