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Oregon State Report

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Water Quality Data Available for this Watershed

Oregon, Yamhill Watershed


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Features

Assessment Summary for Reporting Year 2006
Oregon, Yamhill Watershed

Description of this table
Click here to list Threatened and Impaired Waters Only
NOTE: Click on the underlined "Waterbody Name" to view a Waterbody report.
Waterbody Name Waterbody ID Location Map Waterbody Type Size Units Status State TMDL Development Status
Agency Creek: Mm 0-12.8 OR_1236223450748_0_12.8 Yamhill: 17090008 Waterbody Map River 12.8 Miles Good  
Ash Swale: Mm 0-12.5 OR_1232131451134_0_12.5 Yamhill: 17090008 Waterbody Map River 12.5 Miles Not_Assessed  
Baker Creek: Mm 0-14.2 OR_1231850452478_0_14.2 Yamhill: 17090008 Waterbody Map River 14.2 Miles Impaired  
Canada Creek: Mm 0-5.7 OR_1235391451541_0_5.7 Yamhill: 17090008 Waterbody Map River 5.7 Miles Not_Assessed  
Cedar Creek: Mm 0-2.3 OR_1236882450950_0_2.3 Yamhill: 17090008 Waterbody Map River 2.3 Miles Impaired  
Cedar Creek: Mm 0-3.9 OR_1233123453631_0_3.9 Yamhill: 17090008 Waterbody Map River 3.9 Miles Not_Assessed  
Cozine Creek: Mm 0-6.8 OR_1231877452053_0_6.8 Yamhill: 17090008 Waterbody Map River 6.8 Miles Not_Assessed  
Deer Creek: Mm 0-12 OR_1232578451336_0_12 Yamhill: 17090008 Data Unavailable River 12.0 Miles Impaired  
Deer Creek: Mm 0-20.4 OR_1232578451336_0_20.4 Yamhill: 17090008 Waterbody Map River 20.4 Miles Impaired  
Deer Creek: Mm 12-20.4 OR_1232578451336_12_20.4 Yamhill: 17090008 Data Unavailable River 8.4 Miles Good  
Dupee Creek: Mm 0-4.1 OR_1233690451236_0_4.1 Yamhill: 17090008 Waterbody Map River 4.1 Miles Good  
Garrish Valley Creek: Mm 0-5.1 OR_1232373453602_0_5.1 Yamhill: 17090008 Waterbody Map River 5.1 Miles Good  
Gold Creek: Mm 0-5.4 OR_1235335450476_0_5.4 Yamhill: 17090008 Waterbody Map River 5.4 Miles Good  
Gooseneck Creek: Mm 0-8.8 OR_1234296450352_0_8.8 Yamhill: 17090008 Waterbody Map River 8.8 Miles Impaired  
Haskins Creek: Mm 0-10.6 OR_1233144453579_0_10.6 Yamhill: 17090008 Waterbody Map River 10.6 Miles Impaired  
Hawn Creek: Mm 0-7 OR_1231228452403_0_7 Yamhill: 17090008 Waterbody Map River 7.0 Miles Impaired  
La Toutena Mary Creek: Mm 0-3.3 OR_1234551451751_0_3.3 Yamhill: 17090008 Waterbody Map River 3.3 Miles Not_Assessed  
Mill Creek: Mm 0-22.2 OR_1234447450906_0_22.2 Yamhill: 17090008 Waterbody Map River 22.2 Miles Impaired  
North Yamhill River: Mm 0-14 OR_1231445452259_0_14 Yamhill: 17090008 Data Unavailable River 14.0 Miles Impaired  
North Yamhill River: Mm 0-20.1 OR_1231445452259_0_20.1 Yamhill: 17090008 Waterbody Map River 20.1 Miles Impaired  
North Yamhill River: Mm 0-32.5 OR_1231445452259_0_32.5 Yamhill: 17090008 Data Unavailable River 32.5 Miles Impaired  
North Yamhill River: Mm 20.1-32.4 OR_1231445452259_20.1_32.4 Yamhill: 17090008 Data Unavailable River 12.3 Miles Impaired  
Palmer Creek: Mm 0-17 OR_1230703452218_0_17 Yamhill: 17090008 Waterbody Map River 17.0 Miles Good  
Panther Creek Trib: Mm 0-2.2 OR_1233566453036_0_2.2 Yamhill: 17090008 Waterbody Map River 2.2 Miles Good  
Panther Creek: Mm 0-14 OR_1231806452443_0_14 Yamhill: 17090008 Waterbody Map River 14.0 Miles Impaired  
Rock Creek Trib: Mm 0-1.1 OR_1236026450570_0_1.1 Yamhill: 17090008 Waterbody Map River 1.1 Miles Not_Assessed  
Rock Creek: Mm 0-12.8 OR_1236007450567_0_12.8 Yamhill: 17090008 Waterbody Map River 12.8 Miles Good  
Rock Creek: Mm 0-4 OR_1236007450567_0_4 Yamhill: 17090008 Data Unavailable River 4.0 Miles Good  
Salt Creek: Mm 0-32.8 OR_1232202451614_0_32.8 Yamhill: 17090008 Waterbody Map River 32.8 Miles Impaired  
South Branch Mill Creek: Mm 0-3.8 OR_1234643449676_0_3.8 Yamhill: 17090008 Waterbody Map River 3.8 Miles Good  
South Yamhill River: Mm 0-18.1 OR_1231445452258_0_18.1 Yamhill: 17090008 Data Unavailable River 18.1 Miles Impaired  
South Yamhill River: Mm 0-41 OR_1231445452258_0_41 Yamhill: 17090008 Data Unavailable River 41.0 Miles Impaired  
South Yamhill River: Mm 0-61.8 OR_1231445452258_0_61.8 Yamhill: 17090008 Waterbody Map River 61.8 Miles Good  
South Yamhill River: Mm 18.1-42.6 OR_1231445452258_18.1_42.6 Yamhill: 17090008 Data Unavailable River 24.5 Miles Impaired  
South Yamhill River: Mm 42.6-61.7 OR_1231445452258_42.6_61.7 Yamhill: 17090008 Data Unavailable River 19.1 Miles Impaired  
Turner Creek: Mm 0-2.5 OR_1232587453714_0_2.5 Yamhill: 17090008 Data Unavailable River 2.5 Miles Impaired  
Turner Creek: Mm 0-7.3 OR_1232587453714_0_7.3 Yamhill: 17090008 Waterbody Map River 7.3 Miles Impaired  
Turner Creek: Mm 2.5-7.3 OR_1232587453714_2.5_7.3 Yamhill: 17090008 Data Unavailable River 4.8 Miles Good  
Unnamed Waterbody: : Mm 0-2.5 OR_1231929451034_0_2.5 Yamhill: 17090008 Waterbody Map River 2.5 Miles Good  
West Fork Palmer Creek: Mm 0-5.2 OR_1230779452146_0_5.2 Yamhill: 17090008 Waterbody Map River 5.2 Miles Impaired  
Willamina Creek: Mm 0-20.8 OR_1234765450782_0_20.8 Yamhill: 17090008 Waterbody Map River 20.8 Miles Impaired  
Willamina Creek: Mm 0-9.9 OR_1234765450782_0_9.9 Yamhill: 17090008 Data Unavailable River 9.9 Miles Impaired  
Willamina Creek: Mm 9.9-20.8 OR_1234765450782_9.9_20.8 Yamhill: 17090008 Data Unavailable River 10.9 Miles Not_Assessed  
Yamhill Creek: Mm 0-6.9 OR_1231902453246_0_6.9 Yamhill: 17090008 Waterbody Map River 6.9 Miles Good  
Yamhill River: Mm 0-11.2 OR_1229962452299_0_11.2 Yamhill: 17090008 Waterbody Map River 11.2 Miles Impaired  

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Causes of Impairment for Reporting Year 2006

Oregon, Yamhill

Description of this table
NOTE: Click on the underlined "Cause of Impairment" value to see a listing of those waters with that cause of impairment.
Cause of Impairment Size of Assessed Waters with Listed Causes of Impairment
Rivers and
Streams (Miles)
Alkalinity, Carbonate as CaCO3 46.0
Antimony 11.2
Nutrients - Eutrophication 22.2
Phosphate 46.0
Cadmium 2.3
pH 106.7
2,3,7,8-Tetrachlorodibenzofuran 11.2
Acidity pH < 6.5 or pH > 8.5 18.1
Chlorophyll-A 189.2
Flow Disruption, Groundwater Mining, Inadequate Hydrology 18.1
Priority Organics Compounds 82.2
Zinc 13.5
Arsenic 11.2
Chloride 2.3
Fecal Coliform 178.3
Lead 2.3
Metals 18.1
Nickel 31.6
Nutrients 184.0
Pesticides 18.1
Atrazine 38.2
Chlorpyrifos 5.2
Copper 31.6
Lindane 5.2
Malathion 5.2
Parathion 5.2
Phosphorus, Elemental 189.2
Ammonia, Total 46.0
Dissolved Oxygen 153.7
Diuron 18.1
Fecal Bacteria 18.1
Manganese 76.5
Silver 2.3
Terbacil 20.1
Dibutyl Phthalate 11.2
Guthion 5.2
Iron 64.1
Low Dissolved Oxygen Within The Top 3.0 Meters 18.1
Other Pollutants/Loss of Cover, Predatio 18.1
Selenium 2.3
Temperature, Water 161.7
Chromium, Hexavalent 13.5
Escherichia Coli (E. Coli) 49.4
Habitat Alterations (Other Than Flow) 11.2
Mercury 18.1
Sedimentation/Siltation 184.0
Simazine 38.2
Trivalent Arsenic (Arsenic III) 2.3

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Probable Sources Contributing to Impairments for Reporting Year 2006

Oregon, Yamhill Watershed


No probable sources data have been reported to EPA for this watershed.

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TMDL Alternatives by Cause of Impairment for Reporting Year 2006


Oregon, Yamhill Watershed


No TMDL Alternatives reported.

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Cumulative TMDLs by Pollutant

Oregon, Yamhill Watershed

This chart includes TMDLs since October 1, 1995.

Description of this table
NOTE: Click on the underlined "Number of TMDLs Completed" value to see a listing of those approved TMDLs for the pollutant.
Pollutant Number of TMDLs Completed Number of Causes of
Impairment Addressed
Phosphorus color.gif 3 3

Total: 3 TMDLs; 0 Causes of Impairment



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