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Water Quality Assessment - Oregon's 2012 Integrated Report Assessment Database and 303(d) List

[About the Database]  [Instructions]  [Review the Database]

The Integrated Report Assessment Database contains information on water quality in Oregon’s surface waters and includes waters identified as water quality limited that need TMDLs (Category 5: Section 303(d) list). The database contains assessment information submitted to EPA in November 2014.

EPA approved most of the submitted 303(d) listings and delistings in December 2016. See EPA’s website for details on what was approved and disapproved. The approved 303(d) list with EPA’s modifications is currently effective for Oregon. DEQ will update the searchable database when EPA has completed final action to add other impaired waters to Oregon’s 303(d) list.

You can review the submitted 2012 Integrated Report using default or customized settings (See Review the Database), or review these lists pre-selected from the submitted data:

 About the Database

The 2012 Integrated Report Assessment Database contains new assessment information and updates to assessments from 1998, 2002, 2004,and 2010. (See 2010 Integrated Report Database).The updates made in 2012 are described in the “2012 Assessment Action” report field. If no new data evaluations or assessments are done in 2012, the assessment information and the status assigned in previous assessments are carried forward into the 2012 Integrated Report and noted as “No Action”. 

Information for each record in the assessment database includes:

 Instructions to Review the 2012 Integrated Report Database

 Search criteria options:

NOTE: Large rivers (Willamette River, Columbia River, Deschutes River, etc.) and large assessment units may be in more than one subbasin (4th Field HUC). Search by water body name to find ALL the assessments on large waters. Searching by subbasin names will return any assessment unit contained in or crossing that 4th field HUC. (Example: "Alsea" returns 439 records.) Searching by combined subbasin names will return only the assessment segments that are in all those 4th field HUCs. (Example: "Alsea; Siuslaw" returns 2 records.)

Sorting and counting options:

Searching result options:

View sampling data:

 Review the 2012 Integrated Report Database

 Select search criteria and then click the Search button to begin searching the database.

Subbasin (USGS 4th Field HUC):
Water body (Stream/Lake):

Stream or Lake LLID value:

Enter LLID numeric value

(Hold down the Ctrl key to select multiple parameters)
Listing Status:

Water bodies de-listed in 2012:

(Other listing status selections will be disregarded)

Create a Spreadsheet (.csv) File: Select this option if you want to create a .csv (Comma Separated Values) file of the search results generated by the search criteria you select on this form. Microsoft Excel can be used to view this file.