Laura Johnson

Updates from the National Center for Water Quality Research at Heidelberg University

Heidelberg Tributary Loading Program

Forecasting western Lake Erie HABs using spring loading from the Maumee River

Maumee River Period of Record

*see www.lakeeriealgae.com for more on why

Lowest annual TP load since 2001

Lowest annual DRP load since 2000

Thoughts on how to track progressMaumee River, spring load

Load = FWMC * DischargeFWMC is the slope

The March through July discharge and P loading drives HAB severity

Western Lake Erie Harmful Algal Bloom forecast 2016

Identifying the best strategy to reduce phosphorus loads to Lake Erie from agricultural watersheds

Heidelberg Tributary Loading Program

Blanchard RiverSeneca County

Blanchard Event summary

*new additional objective?

Evaluating the 4R Nutrient Stewardship Concept and Certification Program in the Western Lake Erie Basin

Lead PI: Kevin King, USDA-ARSFunding: 4R Research Fund

Maumee River P loads vary with discharge indicating strong hydrologic control on runoff

Maumee River dissolved P export is chemostatic- indicating a large source present

Maumee River dissolved P export is chemostatic- indicating a large source present

Chronic edaphic losses are prevalent

2012

2014

Honey Creek 2012-2015

Chronic edaphic losses are prevalent

2012

2013

2014

2015

Honey Creek 2012-2015

Indicates a large source in soils

2016

Chronic edaphic losses are prevalent

2012

2013

2014

2015

Honey Creek 2012-2015

Indicates a large source in soils

2016

Opening the Black Box of Nutrient Processing in a Great Lakes Coastal Wetland

Lead PI: Lauren Kinsman-Costello at Kent State UniversityFunded by Ohio Sea Grant

• Survey of sediment characterization

• In depth biogeochemistry (P fractionation, denitrification)

• Core incubation experiment

New upcoming project in Sandusky Bay

Heidelberg Tributary Loading Program – Current Sponsors

Sponsors of Current Research Projects

Questions?

For more information visit: http://www. NCWQR.orgOr contact me at ljohnson@heidelberg.edu

http://www.facebook.com/NCWQR

Maumee at Waterville 2016flow-weighted mean concentration

0.23 0.05

Dissolved P across Lake Erie watersheds

5y avg

2016

Instances of acute runoff are easy to spotHoney Creek in Fall 2011