Illinois River Watershed

Project Updates

Current Phase – Watershed and Lake Calibration/Validation Modeling

The calibration/validation modeling is currently being conducted for both Illinois River and Lake Tenkiller. The purpose of the calibration/validation modeling is to ensure a scientifically sound modeling system is developed to represent the entire Illinois River Watershed. Calibration modeling will be performed using data obtained from the time period of 2001 to 2009, whereas data obtained from the 1992 to 2000 period of record will be used for validation modeling. Calibration and validation of the Illinois River Watershed models will be achieved by considering qualitative and quantitative measures, involving both graphical comparisons and statistical tests.

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Upcoming Events and Activities

None at this time.

Recent Events

The Arkansas Department of Environmental Quality hosted an informational meeting on November 8, 2012.  At the meeting, EPA provided status updates on the Illinois River Watershed Modeling and TMDLs Development project.  The meeting was held in Springdale, Arkansas.  Information from this meeting is listed below.

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You will need Adobe Acrobat Reader, available as a free download, to view these files. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.

Technical Workgroup Meeting/Conference Calls

January 17, 2013 Conference Call

• Meeting Notes
  

November 8,2012 Springdale, AR Technical Meeting

• Meeting Notes

Core Group Meeting/Conference Calls

October 3, 2012 Conference call

• Meeting Notes

August 24, 2012 Conference call

• Meeting Notes

Meetings

November 8, 2012 Meeting

• Agenda (PDF)(1pp,10.99KB)
• Projects Overview (PDF)(11pp,2.81MB)
• Modeling of the IRW Technical Update (PDF)(51pp,2.62MB)
• Tenkiller Lake Presentation (PDF)(34pp,4.05MB)

April 26, 2012 Meeting

• Agenda (PDF)(1pp,9.88KB)
• Sign-In Sheet (PDF)(6pp,1.10MB)
• Projects Overview (PDF)(15pp,7.72MB)
• Modeling of the IRW Technical Update (PDF)(22pp,1.39MB)
• Tenkiller Lake Presentation (PDF)(18pp,2.79MB)

May 19, 2011 Meeting

• Agenda (PDF)(1pp,16.05KB)
• Sign-In Sheet (PDF)(3pp,114.96KB)
• Projects Overview (PDF)(15pp,7.72MB)
• Presentation (PDF)(47pp,5.05MB)
  
  

January 6, 2011 Meeting

• Draft Schedule (PDF)(5pp,330KB)
• Sign-In Sheet (PDF)(10pp,289KB)
• Presentation (PDF)(25pp,1.8MB)
• Agenda (PDF)(1pp,24KB)
• Project Overview (PDF)(13pp,5.3MB)

September 14, 2010 Meeting

• Draft Meeting Schedule (PDF)(5pp,328KB)
• Presentation 1 (PDF)(15pp,1.46MB)
• Presentation 2 (PDF)(16pp,5.57MB)
• Presentation 3 (PDF)(9pp,1.24MB)
• 1:00pm-3:00pm Informational Meeting Agenda (PDF)(1pp,22.2KB)
• 6:00pm-8:00pm Agenda (PDF)(1pp,23.6KB)

February 4, 2010 Meeting

• Draft Schedule (PDF)(5pp,127.68KB)
• 1:00pm Agenda (PDF)(2pp,69.5KB)
• Sign-In Sheet 6:00pm (PDF)(4pp,137.39KB)

November 20, 2009 Meeting - Project Kickoff Meeting

• Draft Schedule (PDF)(2pp,121.5KB)
• Notes (PDF)(2pp,35.7KB)
• Process Logistics (PDF)(2pp,24.9KB)
• Kickoff Meeting Presentation Notes (PDF)(9pp,2.89)
• Contacts (PDF)(1pp,21.06KB)

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Conference Call Minutes

• October 22, 2010 Conference Call Notes (PDF)(2pp,32KB)
• December 10, 2010 Conference Call Notes (PDF)(2pp,37KB)
• February 11, 2011 Conference Call Notes-Draft (PDF)(2pp,33KB)
• December 15, 2011 Conference Call Notes ({DF)(2pp,22.86KB)

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Correspondence

• EPA Letter to Poultry Federation May 3, 2013 (PDF) (253KB,1pp)
• EPA Letter to Simmons Foods May 2, 2013 (PDF) (252KB,1pp)
• EPA Letter to Tyson Foods May 2, 2013 (PDF) (382KB,2pp)
• EPA Letter to ADEQ and State of Oklahoma: Oct 1, 2009 (PDF)(2pp,643KB)
• State of Oklahoma to EPA: Received Oct 23, 2009 (PDF)(2pp,51KB)
• EPA Letter to Cherokee Nation: Jan 22, 2010 (PDF)(1pp,42KB)
• EPA Letter to United Keetoowah Band of Cherokee Indians of Oklahoma: Jan 22, 2010 (PDF)(1pp,41.69KB)
• State of Oklahoma to EPA: Received May 7, 2010 (PDF)(2pp,87.86KB)
• EPA Letter to ODEQ and State of Oklahoma: Jul 2, 2010 (PDF)(1pp,233.8KB)
• IRWP Letter to EPA: Feb 28, 2011 (PDF)(1pp,45.19KB)
• GTAA Letter to EPA, Lake Tenkiller, 5-21-2010 (PDF)(1pp,232KB)
• City of Fayetteville Commitment to Water Quality,Oct 12, 2011(PDF)(6pp,281KB)
• EPA Letter to Fayetteville, Nov 22, 2011 (PDF)(2pp,418KB)
• Congressional Delegation Letter to EPA, Dec 9,2011 (PDF)(2pp,442KB)
• STIR Letter to EPA Jan 2, 2012 (PDF)(3pp,53.81KB)
• EPA Delegation Letter to AR-OK IRW Modeling, Feb 16,2012 (PDF)(2pp,586KB)
• EPA Letter to STIR IRW TMDL Project, Feb24, 2012 (PDF)(4pp,981KB)

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Drafts and Comments

Project QAPP (Quality Assurance Project Plan)

• ADEQ QAPP Comments: Jan 8, 2010 (PDF)(3pp,64.5KB)
• Tyson Foods, Inc QAPP Comments: Jan 6, 2010 (PDF)(2pp,78.87KB)
• City of Fayetteville, AR QAPP Comments: Jan 6, 2010 (PDF)(3pp,1.79MB)
• City of Rogers, AR QAPP Comments: Jan 6, 2010 (PDF)(7pp,385.93KB)
• City of Siloam Springs, AR QAPP Comments: Jan 6, 2010 (PDF)(3pp,1.4MB)
• ODEQ QAPP Comments: Jan 13, 2010 (PDF)(1pp,19.57KB)

Data Gap Report

• Report - Preliminary Data Review and Analysis for Water Quality Modeling and TMDL Development for the Illinois River Watershed: Aug 3, 2010 (PDF)(99pp,18.19MB)
• Matlock Comments on Aug 3, 2010 Preliminary Data Review Report: Aug 29, 2010 (PDF)(2pp,72.55KB)
• Tyson Foods, Inc. Comments on Aug 3, Data Report: Aug 31, 2010 (PDF)(3pp,597.2KB)
• Supplemental to Oklahoma Comments on Aug 3, 2010 Data Report: Sep 8, 2010 (PDF)(1pp,24.14KB)
• ADEQ Comments of the Preliminary Data Review: Sep 13, 2010 (PDF)(4pp,200.36KB)
• City of Rogers TMDL Comments on Aug 3, Data Report (PDF)(8pp,151.8KB)
• Final Data Report Sept 30 2011 (PDF)(104pp,10.82 MB)
  

Model Selection Report

• ADEQ Comments on Model Selection Memo: Jan 13, 2010 (PDF)(23pp,780.42KB)
• Model Selection Technical Memo (AquaTerra): Nov 22, 2010 (PDF)(36pp,1.05MB)
• Matlock Comments on Model Selection Memo: Dec 20, 2010 (PDF)(2pp,188.76KB)
• Oklahoma Comments on Model Selection Memo: Jan 10, 2011 (PDF)(3pp,59.35KB)
• TMDL Model Selection Memo: Sept 30, 2011 (PDF)(39pp,1.91MB)

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Data

Modeling QAPP and Simulation Plan

• AT-IRW Simulation Plan Review-Draft 8-29-11 (PDF)(94pp,6.79MB)
• IRW Modeling QAPP Review Draft, 8-29-11 (PDF)(67pp,5.9MB)
• Illinois River QAPP Concerns Sept 2011 ADEQ (PDF)(24pp,6.71MB)
• Illinois River QAPP Concerns Sept 2011 ODEQ (PDF)(3pp,27KB)
• Simulation Plan QAPP Comments, Sept 2011 ODEQ (PDF)(2pp,80KB)

GIS Data

• Oklahoma Comments on GIS Database: Sep 22, 2010 (PDF)(1pp,151.6KB)

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Final Documents

• Illinois River QAPP[Final] (PDF)(40pp,747.95KB)

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Watershed Based Plans

• Arkansas/Illinois River Watershed Partnership - Illinois River Watershed Plan
• State of Oklahoma - Illinois River Watershed Plan

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