National Center for Water Quality Research

GLWQA Annex 4

Loading Calculations Technical Symposium

April 5-6, 2017

Ann Arbor

Meeting objectives:

• Facilitate discussion on the pros/cons of different methods being used to calculate tributary nutrient loads.
• Better understand of whether the various approaches will meet managers’ needs in the near and long-term.
• Work towards developing a common framework for tracking progress under the Great Lakes Water Quality Agreement (GLWQA) Annex 4

Presentations (click on the title to download):

Wednesday April 5th

• Historical Perspectives and the Lake Erie Loading Estimation Work Group – Russ Kreis
• Current monitoring of Lake Erie tributaries – Laura Johnson, Heidelberg
• NEMWI Report: Findings from the Lake Erie Case Study – Anne Choquette, USGS
• Tracking Progress: ErieStat & the Blue Accounting Program – Nicole Zacharda, Great Lakes Commission
• The importance of understanding the data assumptions in loading calculations and lessons learned from the Chesapeake Bay – Dr. Robert Hirsch, USGS

Thursday April 6th

• Lake Erie Nutrient Loading Estimation: The Dolan Approach – Matt Maccoux
• Monitoring, loads, and new tools from ECCC – Alice Dove and Isaac Wong
• Heidelberg Approach: Stratified AutoBeale (The Basics) – Pete Richards
• Heidelberg Approach: Stratified RAutoBeale (updates) – Rem Confesor
• Long-term WLEB trends using WRTDS – Bob Hirsch and Anne Choquette
• Calculating loads with WQ Surrogates – Dale Robertson
• GCLAS (Graphical Constituent Loading Analysis System) – Greg Koltun
• USGS Methods Comparisons Summary – Casey Lee

•  WRTDS Tutorial by Bob Hirsch