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Summaries and Handouts from NCDAWG Meetings

Meeting records of the Nutrient Criteria Development Work Group (NCDAWG), which advises the TCEQ about nutrient standards for surface water quality

Meeting Records

The Nutrient Criteria Development Advisory Work Group was part of the Surface Water Quality Standards Advisory Work Group from 2006 through 2009; please see the SWQSAWG Handouts and Documents page for records about nutrient criteria discussions that took place during that period.

Date Agenda Minutes Materials
August 5, 2020 Adobe Acrobat PDF Document Agenda Adobe Acrobat PDF Document Meeting Minutes Microsoft PowerPoint Document TCEQ Nutrient Criteria Development Plan Update
Microsoft PowerPoint Document  Federal Updates on Numeric Nutrient Criteria Development
Microsoft PowerPoint Document Evaluation of Laboratory Methods to Quantify Chlorophyll a: Phase 1 
Microsoft PowerPoint Document Proceeding with Reservoirs with Disapproved Chlorophyll a Criteria 
Periphyton Phase 2
July 27, 2015 Agenda This meeting was held by the Surface Water Quality Monitoring (SWQM) Team for the Guidance Assessment Work Group (GAWG). Nutrient assessment of reservoirs was discussed, and all meeting materials can be found on the GAWG web page.
October 1, 2014 Agenda Meeting Minutes

List of Attendees
2014 Nutrient Criteria Development Plan
Microsoft PowerPoint Document Characterization of Lake Somerville  
Pre-Meeting Survey Results

November 7, 2012 Agenda Meeting Minutes

List of Attendees
Microsoft PowerPoint Document Status Update on EPA Approval of 2010 WQS and Summary of Revisions to TCEQ Nutrient Criteria Development Plan
Microsoft PowerPoint DocumentCharacterization of Lake Somerville 

Microsoft PowerPoint DocumentData Collection Methods for Nutrients in Texas Streams
Microsoft PowerPoint DocumentDevelopment of Land Use/Land Cover Data for Nutrient Criteria Development
Microsoft PowerPoint DocumentGetting Started with Nutrient Criteria
Microsoft PowerPoint DocumentEvaluating Stressor Response Relationships
Microsoft PowerPoint DocumentRegional Red River Project Update
Microsoft PowerPoint DocumentNutrient Dynamics in the Mission Aransas National Estuarine Research Reserve

June 20, 2011 Meeting Minutes List of Attendees
Overview of Water Quality Criteria for Nutrients
Selected Nutrient Projects and Related Projects in Texas
Microsoft PowerPoint DocumentNutrient Criteria Development Advisory Workgroup
Microsoft PowerPoint DocumentNutrient Criteria
Microsoft PowerPoint DocumentStandards: How Do We Use the Data and What Data Do We Need to Establish Future Criteria
September 26, 2005 Agenda Summary

Meeting Invitation Letter from Mark Fisher
Microsoft Excel Document0% to 10% Criteria  
Microsoft Excel Document0% to 10% TP Criteria
Microsoft Excel DocumentMore Than 20% Criteria  
Microsoft Excel DocumentReservoirs Five Year Analysis  
Microsoft Excel DocumentSeason vs All Year Criteria  
Least Impacted Reservoir Screening Method
Nutrient Criteria Updated September 26, 2005
Reservoirs Chlorophyll-a Criteria
Seasonal Difference in Reservoirs

July 12, 2005 Agenda Summary Dissolved Oxygen Dynamics, Nutrients and...
Central Texas Nutrient Sites and Wadeable...
Investigation to Support the Development of...
Nutrient Criteria for the Texas Surface Water...
April 13, 2005 Agenda Summary Development of Use-based Chlorophyll Criteria
Improving the Quality of Fishing
Establishing Reservoir Nutrient Criteria for Texas
Approach for Establishing Reservoir Nutrient Criteria
Draft Reservoir Criteria with Means and Medians
12/20/04 Draft Nutrient Criteria Development Plan
NCDAWG Focus Question 1
Reservoir Land Use Urban and Agriculture
January 26, 2004 Agenda Summary Nutrient Criteria in the Trinity River Basin
Microsoft Excel DocumentCharacteristics of Texas Reservoirs Database
Microsoft Excel DocumentSummer Lake Statistics Database
Microsoft Excel Document01/04 Texas Nutrient Criteria Database
Microsoft PowerPoint DocumentNutrients in Texas Reservoirs
Microsoft PowerPoint DocumentTWCA Case Study
Microsoft Word DocumentDesignated Lakes and Ecoregions Map
Microsoft Word DocumentNutrient Criteria Investigation Preliminary Report
February 24, 2003 Summary A Possible Method to Develop Nutrient Criteria
May 20, 2002 Agenda Summary

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