Stressor Identification Process & CADDIS
Jul 23 @ 12:00 pm – 1:00 pm

EPA’s Stressor Identification Process and CADDIS

Biological monitoring and assessment has become an essential tool for describing the condition of water bodies.  When an undesirable condition has been documented, a causal assessment can help direct management action toward the cause of the problem.  This webinar will introduce participants to U.S. EPA’s Stressor Identification and the Causal Analysis/Diagnosis Decision Information System (CADDIS). The step-by-step process for causal assessment process described on CADDIS includes developing a list of candidate causes of the observed effects, deriving evidence for or against each alternative, and identifying the best explanation by considering all of the evidence.  We will describe the process and the derivation and evaluation of commonly encountered types of evidence.  We will also provide a tour of information and tools available on CADDIS and discuss recent experiences from case studies conducted in California. 

Presented by:  Scot E. Hagerthey, PhD and Susan B. Norton, PhD

Dr. Hagerthey is an Ecologist in the U.S. EPA’s National Center for Environmental Assessment. His particular interests are assessing ecological condition, establishing causal relationships, developing predictive tools, assessing restoration outcomes, and quantifying ecological risk. His career has focused primarily on algae as biological indicators of aquatic ecosystem condition.  Dr. Hagerthey received his BS in Biology from East Carolina University and his PhD in Biology from Michigan Technological University. 

Dr. Norton is a Senior Ecologist in the U.S. EPA’s National Center for Environmental Assessment.  Since joining EPA in 1988, she has developed methods and guidance to better use ecological knowledge to inform environmental decisions.  She has published numerous articles on ecological assessment and edited the book Ecological Assessment of Aquatic Resources:  Linking Science to Decision-Making.  Dr. Norton received her BS in Plant Science from Penn State, her MS in Natural Resources from Cornell University, and her PhD in Environmental Biology from George Mason University.


16th Annual EPA Region 6 Stormwater Conference
Jul 27 – Aug 1 all-day

This and more information can be found at the event website.

The U.S. Environmental Protection Agency (EPA), in partnership with the South Central Chapter of the International Erosion Control Association (SCIECA), the City of Fort Worth, the Dallas Fort Worth Airport, the North Central Texas Council of Governments, and the States of Region 6 is hosting the 16th Annual EPA Region 6 Stormwater Conference on July 27 – August 1, 2014, at the Renaissance Worthington Hotel, 200 Main St, Fort Worth, Texas.  This conference will address and discuss the various issues and challenges of managing municipal stormwater, as well as new and upcoming rules and regulations.

Who Should Attend?
This conference is recommended for stormwater professionals including permittees, owners, operators, contractors, consultants, engineers, regulators, and etc. of stormwater systems.

What Topics will the Agenda Include?

  • Sustainable Development, Low Impact Development and Green Infrastructure
  • TMDL’s and Watershed Implementation Plans
  • Stormwater Funding
  • Monitoring, New Technologies, and Case Studies
  • Construction and Industrial Stormwater Management
  • Legal, Ordinances and Regulations
  • Stormwater Management Program and Training
  • Public Education and Outreach

Interested in Giving a Presentation?
If you are interested in being a speaker, please submit your abstract for consideration at The deadline to submit your abstract is January 30, 2014. For additional information see the call for papers.

StormCon 2014
Aug 3 – Aug 7 all-day
Pervious in Paradise
Aug 5 – Aug 8 all-day
Linking Stormwater BMP Performance to Receiving Water Protection: Improving Selection and Design
Aug 6 @ 1:00 pm – 2:30 pm

Watershed modelers now have a tool that allows them to connect their models to receiving water models as well as meterological data, cost data, and BMP performance data. Framework Version 2.0 is a software environment that makes it easy for modelers to not only develop statistics and charts by directly reading results from models, such as SWMM and CE-QUAL-W2, but connect those models, so that one provides inputs to the other. The Framework does not attempt to recreate the watershed or receiving water models, but efficiently connects the outputs and inputs together so that watershed managers can more effectively plan and design BMP implementation for their specific watershed needs. Framework Version 2.0 is expected to be released in the summer of 2014.

This webcast will provide an overview of Framework Version 2.0 and a step-by-step tutorial session.


  • Larry Roesner, Ph.D., Colorado State University 
  • Charles Rowney, Ph.D., ACR, LLC
  • Theresa Connor, WERF (Moderator)
For additional information, view the recording of the WERF SELECT Version 2.0 Overview and Discussion webcast.

Registration Information:

This webcast is being offered at no charge, and is available for sponsorship. Please register through GoToWebinar.

There will be 1.5 Professional Development Hours (PDHs) offered for this webcast. Please check with your state accreditation agency to determine if you qualify. Log-on information will be emailed to you 24 hours prior to the webcast. Included in this email will be information regarding attendance verification, PDH distribution, and procedures to follow during the live event.

Cooperating Organizations:

Water Environment Research Foundation (WERF)

Green Infrastructure, Climate, and Cities
Aug 6 @ 4:00 pm – 5:45 pm
Flood Resilience and Recovery Assistance: Lessons Learned from Vermont
Aug 13 @ 1:00 pm – 2:30 pm
EPA 4/SEIECA MS4 Conference
Aug 18 – Aug 19 all-day
Green Roofs for Healthy Cities: Grey to Green
Aug 25 – Aug 26 all-day
2014 Texas Groundwater Summit
Aug 26 – Aug 28 all-day