July 20, 2017

Building Science Assessments workshop

Building Science Assessments for StateLevel Nutrient Reduction Strategies

Workshop Program
Iowa Science Assessment (link to ISU website)
Attendee List
Program Committee

Building Science Assessments for State-Level Nutrient Reduction Strategies was a multi-day workshop -- held November 13-15, 2012 in Davenport, Iowa -- at which attendees and speakers worked to a) present the process and results of the science assessment work being done in Iowa on nutrient reduction, b) provide a workshop environment for state and regional teams in the Mississippi River Basin to collaborate on developing or advancing the process for their state science assessments, c) offer presentations and posters on additional science resources available to state teams for developing their assessments, and d) discuss current information on additional science questions.

Powerpoint Presentations from Speakers and Conference Welcome Video

November 13 – Day One – Nutrient Application Data & Baseline Conditions

Welcome and Opening Speakers – What can make a state collaboration work

Bill Northey & Wendy Wintersteen - Conference Welcome from Iowa State University Extension on Vimeo.

Overview – Nutrient fate and transport
o Mark David, University of Illinois, Urbana‐Champaign

Iowa’s Baseline conditions – Land use, nutrient inputs, conservation systems
o Reid Christianson, Center for Watershed Protection (formerly with Iowa State University)


November 14 – Day Two – Iowa N & P Reduction Practices, Other State Experiences

Nitrogen reduction: Practice review and load estimates 
o Matt Helmers, Iowa State University

Phosphorus reduction: Practice review and load estimates 
o Tom Isenhart, Iowa State University

Nutrient Load Estimations for Point and Nonpoint Sources 
o Calvin Wolter, Iowa Department of Natural Resources

Panel discussion on N and P reduction tools
o Dan Jaynes, USDA‐ARS National Laboratory for Agriculture and the Environment 

Economics of load reduction strategies 
o John Lawrence, Iowa State University   

Components of the Minnesota State Level Science Assessment and Watershed Nitrogen Reduction Planning Tool 
o David Mulla, University of Minnesota

Field scale assessment of management for water quality in Wisconsin
o Laura Ward Good, University of Wisconsin‐Madison; Dennis Busch, University of Wisconsin‐Platteville; & Eric Cooley, UW Discovery Farms

Ongoing federal research, science contributions, models
o Anne Rea, Environmental Protection Agency
o Dale Robertson, US Geological Survey 

November 15 – Day Three – Additional Questions, Resources, and Moving Forward
Science questions raised in the development of a science assessment

Impact of stream bank and bed erosion on Phosphorus loading on streams
o David Mulla, University of Minnesota 
o Chris Lenhart, University of Minnesota David Baker, Heidelberg University

Effect of Conservation Tillage Systems on Dissolved Phosphorus
o David Baker, Heidelberg University
o Greg McIsaac, University of Illinois, Urbana‐Champaign 

Soil sustainability impacts of nutrient management practices in ag landscapes
o Mike Castellano, Iowa State University

Group Discussion: Assessment of Presentations and Analysis of Research Gaps & Needs
o Mark David, University of Illinois, Urbana‐Champaign (no powerpoint)
o Jane Frankenberger, Purdue University


This workshop was organized by the Soil and Water Conservation Society and sponsored by USDA, EPA, and UMRSHNC.



Additional Resources
UMRSHNC Workshop Proceedings
September 26-28, 2005


Download PDF (from EPA Office of Water website)

Program Committee

In alphabetical order...

  • Katie Flahive, US EPA
  • Jim Gulliford, Soil and Water Conservation Society
  • Matt Helmers, Iowa State University
  • Eric Hurley, USDA-NRCS
  • Richard Ingram, Mississippi Department of Environmental Quality
  • Dewayne Johnson, Soil and Water Conservation Society
  • Dean Lemke, Iowa Department of Agriculture and Land Stewardship
  • Dennis McKenna, Illinois Department of Agriculture
  • Shawn Richmond, Iowa Department of Agriculture and Land Stewardship


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